Airway ultrasound allows for precise airway evaluation,particularly for assessing the difficult airway and the potential for front of neck access.Many studies have shown that identification of the cricothyroid membran...Airway ultrasound allows for precise airway evaluation,particularly for assessing the difficult airway and the potential for front of neck access.Many studies have shown that identification of the cricothyroid membrane by airway ultrasound is more accurate than digital palpation.However,no reports to date have provided clinical evidence that ultrasound identification of the cricothyroid membrane increases the success rate of cricothyroidotomy.This is a narrative review which describes patients with difficult airways for whom airway ultrasound may have been useful for clinical decision making.The role of airway ultrasound for the evaluation of difficult airways is summarized and an approach to the use of ultrasound for airway management is proposed.The goal of this review is to present practical applications of airway ultrasound for patients predicted to have a difficult airway and who undergo cricothyroidotomy.展开更多
BACKGROUND Cervical haemorrhage due to spontaneous rupture of a parathyroid adenoma is a rare complication that may cause life-threatening acute airway compromise.CASE SUMMARY A 64-year-old woman was admitted to the h...BACKGROUND Cervical haemorrhage due to spontaneous rupture of a parathyroid adenoma is a rare complication that may cause life-threatening acute airway compromise.CASE SUMMARY A 64-year-old woman was admitted to the hospital 1 day after the onset of right neck enlargement, local tenderness, head-turning difficulty, pharyngeal pain, and mild dyspnoea. Repeat routine blood testing showed a rapid decrease in the haemoglobin concentration, indicating active bleeding. Enhanced computed tomography images showed neck haemorrhage and a ruptured right parathyroid adenoma. The plan was to perform emergency neck exploration, haemorrhage removal, and right inferior parathyroidectomy under general anaesthesia. The patient was administered 50 mg of intravenous propofol, and the glottis was successfully visualised on video laryngoscopy. However, after the administration of a muscle relaxant, the glottis was no longer visible and the patient had a difficult airway that prevented mask ventilation and endotracheal intubation. Fortunately, an experienced anaesthesiologist successfully intubated the patient under video laryngoscopy after an emergency laryngeal mask placement. Postoperative pathology showed a parathyroid adenoma with marked bleeding and cystic changes. The patient recovered well without complications.CONCLUSION Airway management is very important in patients with cervical haemorrhage. After the administration of muscle relaxants, the loss of oropharyngeal support can cause acute airway obstruction.Therefore, muscle relaxants should be administered with caution. Anaesthesiologists should pay careful attention to airway management and have alternative airway devices and tracheotomy equipment available.展开更多
BACKGROUND Reports on perioperative anesthesia management in pediatric patients with difficult airways are scarce.In addition to relatively more difficulties in the technique of endotracheal intubation,the time for ma...BACKGROUND Reports on perioperative anesthesia management in pediatric patients with difficult airways are scarce.In addition to relatively more difficulties in the technique of endotracheal intubation,the time for manipulation is restricted compared to adults.Securing the airways safely and avoiding the occurrence of hypoxemia in these patients are of significance.CASE SUMMARY A 9-year-old boy with spastic cerebral palsy,severe malnutrition,thoracic scoliosis,thoracic and airway malformation,laryngomalacia,pneumonia,and epilepsy faced the risk of anesthesia during palliative surgery.After a thorough preoperative evaluation,a detailed scheme for anesthesia and a series of intu-bation tools were prepared by a team of anesthesiologists.Awake fiberoptic intubation is the widely accepted strategy for patients with anticipated difficult airways.Given the age and medical condition of the patient,we kept him sedated with spontaneous breathing during endotracheal intubation.The endotracheal intubation was completed on the second attempt after the failure of the first effort.Fortunately,the surgery was successful without postoperative complications.CONCLUSION Dealing with difficult airways in the pediatric population,proper sedation allows time to intubate without interrupting spontaneous breathing.The appropriate endotracheal intubation method based on the patient’s unique characteristics is the key factor in successful management of these rare cases.展开更多
BACKGROUND Difficult airway is a significant cause of anesthesia-associated death and disability.Currently,physical examinations of thyromental distance,mouth opening,Mafampaii classification,etc.combined with X-ray,c...BACKGROUND Difficult airway is a significant cause of anesthesia-associated death and disability.Currently,physical examinations of thyromental distance,mouth opening,Mafampaii classification,etc.combined with X-ray,computed tomography(CT),and other imaging technologies are mainly used to evaluate difficult airways.However,in many special cases,i.e.,emergency surgery,imaging examinations cannot be completed preoperatively.Such patients’airway can only be evaluated through general physical examination,which inevitably increases the likelihood of an unexpected difficult airway during anesthesia.CASE SUMMARY We report a rare case of difficult intubation because of severe upper trachea distortion after induction.Emergency holmium laser lithotripsy was performed under transurethral ureteroscopy because the patient had anuria for 4 d and a creatinine level of 890μmol/L.Due to the urgency of the condition,chest radiography or chest CT was not examined before surgery and the anesthesiologist did not evaluate the airway adequately,resulting in an unexpected difficult airway.CONCLUSION The incidence of tracheal malformation and tracheal stenosis is extremely low,but the risk of hypoxia and even death due to difficult airways is extremely high for such patients.It is recommended to complete preoperative imaging examinations of the airway.For life-threatening emergency patients,a pre-anesthesia reassessment should be performed and surgeons should be prepared to prevent and manage the difficult airway.展开更多
To the Editor:Airway management is a crucial skill for emergency physician,who's often called to deal with difficult airways and requests for quick,simple and effective responses,as the many factors responsible fo...To the Editor:Airway management is a crucial skill for emergency physician,who's often called to deal with difficult airways and requests for quick,simple and effective responses,as the many factors responsible for difficulties might be enhanced by emergency setting.[1]We now have many rescue devices as the LMA,I-gel,but they do展开更多
Background:Identifying a potentially difficult airway is crucial both in anaesthesia in the operating room(OR)and non-operation room sites.There are no guidelines or expert consensus focused on the assessment of the d...Background:Identifying a potentially difficult airway is crucial both in anaesthesia in the operating room(OR)and non-operation room sites.There are no guidelines or expert consensus focused on the assessment of the difficult airway before,so this expert consensus is developed to provide guidance for airway assessment,making this process more standardized and accurate to reduce airway-related complications and improve safety.Methods:Seven members from the Airway Management Group of the Chinese Society of Anaesthesiology(CSA)met to discuss the first draft and then this was sent to 15 international experts for review,comment,and approval.The Grading of Recommendations,Assessment,Development and Evaluation(GRADE)is used to determine the level of evidence and grade the strength of recommendations.The recommendations were revised through a three-round Delphi survey from experts.Results:This expert consensus provides a comprehensive approach to airway assessment based on the medical history,physical examination,comprehensive scores,imaging,and new developments including transnasal endoscopy,virtual laryngoscopy,and 3D printing.In addition,this consensus also reviews some new technologies currently under development such as prediction from facial images and voice information with the aim of proposing new research directions for the assessment of difficult airway.Conclusions:This consensus applies to anesthesiologists,critical care,and emergency physicians refining the preoperative airway assessment and preparing an appropriate intubation strategy for patients with a potentially difficult airway.展开更多
<b>Background:</b> Emergency endotracheal intubations (EEI) performed outside of operating theatre (OT) tend to be more challenging and associated with higher risk of complications. In 2011, with the objec...<b>Background:</b> Emergency endotracheal intubations (EEI) performed outside of operating theatre (OT) tend to be more challenging and associated with higher risk of complications. In 2011, with the objective of improving patient outcomes, we set up an Emergency Airway Service (EAS) at our 1000-bed regional hospital, with the aim of providing specialized assistance for outside of OT difficult airway management. <b>Method:</b> A retrospective audit of EAS activation from 12/9/2016 and 27/10/2020 was conducted. EAS forms and electronic medical records were reviewed. We collected information on patient characteristics, EAS activation characteristics and its outcomes. Descriptive analysis method was used to present the collected data. <b>Results:</b> There were a total of 275 activations, of which 268 were analysed. Reasons for activation were anticipated difficult intubation (42.2% n = 113), failed intubation attempt (52.6%, n = 141) and advanced intubation equipment required (5.2% n = 14). Intubation was attempted in 261/268 (97.4%) cases by the EAS team. Of these, 255 (97.7%) cases were successful while 6 (2.3%) cases failed intubation. Of the successful intubations by the EAS team, 208/255 (81.5%) were successful on the first attempt. Out of the 6 unsuccessful intubation cases, 1 case required a rescue cricothyroidotomy and 4 cases required an open tracheostomy. Intubation was deemed easy by the EAS team in 170/261 (65.1%) cases. 64/170 (37.6%) cases were intubated with a video laryngoscope (VL). There were 85 cases (32.3%) classified as difficult intubation by the EAS specialist, 13/85 (15.3%) were intubated using only VL, 54/85 (63.5%) cases were intubated using VL with style/bougie. <b>Conclusion:</b> Audit results showed that providing an experienced and well-equipped team of airway specialists round-the-clock to assist in difficult and potentially difficult endotracheal intubations is justifiable and may reduce complications associated with EEI.展开更多
BACKGROUND Epiglottic cysts is a rare but potentially lethal supraglottic airway pathology in infants due to the high risk of cannot intubation or cannot ventilation.Awake fiberoptic intubation appeared to be the safe...BACKGROUND Epiglottic cysts is a rare but potentially lethal supraglottic airway pathology in infants due to the high risk of cannot intubation or cannot ventilation.Awake fiberoptic intubation appeared to be the safest technique,but it is very challenging in infants with large epiglottic cysts.Even it has the risk of airway loss.We report that cyst aspiration is an effective treatment as the first-choice procedure for airway management in an infant with large epiglottic cysts.CASE SUMMARY A 46-day-old male infant weighing 2.3 kg presented to the emergency room with difficulty feeding,worsening stridor,and progressive respiratory distress.Epiglottic cysts was diagnosed,but fibro bronchoscopy examination failed,as the fiberoptic bronchoscope was unable to cross the epiglottic cysts to the trachea.The infant was transferred to the operating room for emergency cystectomy under general anesthesia.Spontaneous respiration was maintained during anesthesia induction,and cyst aspiration was performed as the first procedure for airway management under video laryngoscopy considering that the preoperative fibro bronchoscopy examination failed.Then,the endotracheal tube was intubated successfully.Cystectomy was performed uneventfully,and the infant was safely transferred to the intensive care unit after surgery.The infant was extubated smoothly on the third postoperative day and discharged on the eighth day after surgery.On follow-up 1 year after the surgery,a normal airway was found by fibro bronchoscopy examination.CONCLUSION Epiglottic cyst aspiration can be considered the first procedure for airway management in infants with large epiglottic cysts.展开更多
Coronavirus Disease 2019(COVID-19),caused by a novel coronavirus(SARS-Co V-2),is a highly contagious disease.It firstly appeared in Wuhan,Hubei province of China in December 2019.During the next two months,it moved ra...Coronavirus Disease 2019(COVID-19),caused by a novel coronavirus(SARS-Co V-2),is a highly contagious disease.It firstly appeared in Wuhan,Hubei province of China in December 2019.During the next two months,it moved rapidly throughout China.Most of the infected patients have mild symptoms including fever,fatigue and cough,but in severe cases,patients can progress rapidly and develop into acute respiratory distress syndrome,septic shock,metabolic acidosis and coagulopathy.The new coronavirus was reported to spread via droplets,contact and natural aerosols from human to human.Therefore,aerosol-producing procedures such as endotracheal intubation may put the anesthesiologists at high risk of nosocomial infections.In fact,SARSCo V-2 infection of anesthesiologists after endotracheal intubation for confirmed COVID-19 patients have been reported in hospitals in Wuhan.The expert panel of airway management in Chinese Society of Anaesthesiology has deliberated and drafted this recommendation,by which we hope to guide the performance of endotracheal intubation by frontline anesthesiologists and critical care physicians.During the airway management,enhanced droplet/airborne personal protective equitment(PPE)should be applied to the health care providers.A good airway assessment before airway intervention is of vital importance.For patients with normal airway,awake intubation should be avoided,and modified rapid sequence induction is strongly recommended.Sufficient muscle relaxant should be assured before intubation.For patients with difficult airway,good preparation of airway devices and detailed intubation plans should be made.展开更多
BACKGROUND Patients with ankylosing spondylitis(AS)combined with severe cervical fusion deformity have difficult airways.Awake fiberoptic intubation is the standard treatment for such patients.Alleviating anxiety and ...BACKGROUND Patients with ankylosing spondylitis(AS)combined with severe cervical fusion deformity have difficult airways.Awake fiberoptic intubation is the standard treatment for such patients.Alleviating anxiety and discomfort during intubation while maintaining airway patency and adequate ventilation is a major challenge for anesthesiologists.Bronchial blockers(BBs)have significant advantages over double-lumen tubes in these patients requiring one-lung ventilation.AIM To evaluate effective drugs and their optimal dosage for awake fiberoptic nasotracheal intubation in patients with AS and to assess the pulmonary isolation effect of one-lung ventilation with a BB.METHODS We studied 12 AS patients(11 men and one woman)with lung or esophageal cancer who underwent thoracotomy with a BB.Preoperative airway evaluation found that all patients had a difficult airway.All patients received an intramuscular injection of penehyclidine hydrochloride(0.01 mg/kg)before anesthesia.In the operating room,dexmedetomidine(0.5μg/kg)was infused intravenously for 10 min,with 2%lidocaine for airway surface anesthesia,and a 3%ephedrine cotton swab was used to contract the nasal mucosa vessels.Before tracheal intubation,fentanyl(1μg/kg)and midazolam(0.02 mg/kg)were administered intravenously.Awake fiberoptic nasotracheal intubation was performed in the semi-reclining position.Intravenous anesthesia was administered immediately after successful intubation,and a BB was inserted laterally.The pre-intubation preparation time,intubation time,facial grimace score,airway responsiveness score during the fiberoptic introduction,time of end tracheal catheter entry into the nostril,and lung collapse and surgical field score were measured.Systolic blood pressure(SBP),diastolic blood pressure(DBP),and heart rate(HR)were recorded while entering the operation room(T1),before intubation(T2),immediately after intubation(T3),2 min after intubation(T4),and 10 min after intubation(T5).After surgery,all patients were followed for adverse reactions such as epistaxis,sore throat,hoarseness,and dysphagia.RESULTS All patients had a history of AS(20.4±9.6 years).They had a Willson's score of 5 or above,grade III or IV Mallampati tests,an inter-incisor distance of 2.9±0.3 cm,and a thyromental(T-M)distance of 4.8±0.7 cm.The average pre-intubation preparation time was 20.4±3.4 min,intubation time was 2.6±0.4 min,facial grimace score was 1.7±0.7,airway responsiveness score was 1.1±0.7,and pulmonary collapse and surgical exposure score was 1.2±0.4.The SBP,DBP,and HR at T5 were significantly lower than those at T1-T4(P<0.05).While the values at T1 were not significantly different from those at T2-T4(P>0.05),they were significantly different from those at T5(P<0.05).Seven patients had minor epistaxis during endotracheal intubation,two were followed 24 h after surgery with a mild sore throat,and two had hoarseness without dysphagia.CONCLUSION Patients with AS combined with severe cervical and thoracic kyphosis should be intubated using fiberoptic bronchoscopy under conscious sedation and topical anesthesia.Proper doses of penehyclidine hydrochloride,dexmedetomidine,fentanyl,and midazolam,combined with 2%lidocaine,administered prior to intubation,can provide satisfactory conditions for tracheal intubation while maintaining the comfort and safety of patients.BBs are safe and effective for onelung ventilation in such patients during thoracotomy.展开更多
BACKGROUND A“cannot intubate,cannot oxygenate(CICO)”situation is a life-threatening condition that requires emergent management to establish a route for oxygenation to prevent oxygen desaturation.In this paper,we de...BACKGROUND A“cannot intubate,cannot oxygenate(CICO)”situation is a life-threatening condition that requires emergent management to establish a route for oxygenation to prevent oxygen desaturation.In this paper,we describe airway management in a patient with an extended parotid tumor that invaded the airways during CICO using the endotracheal tube tip in the pharynx(TTIP)technique.CASE SUMMARY A 43-year-old man was diagnosed with parotid tumor for>10 years.Computed tomography and nasopharyngeal fiberoptic examination revealed a substantial mass from the right parotid region with a deep extension through the lateral pharyngeal region to the retropharyngeal region and obliteration of the nasopharynx to the oropharynx.Tumor excision was arranged.However,we encountered CICO during anesthesia induction.An endotracheal tube was used as an emergency supraglottic airway device(TTIP)to ventilate the patient in a CICO situation where other tools such as laryngeal mask airway or mask ventilation were not suitable for this complicated and difficult airway.The patient did not experience desaturation despite sudden loss of definite airway.During tracheostomy,the pulse oximetry remained 100%with our technique of ventilating the patient.The arterial blood gas analysis revealed PaCO_(2)35.7 mmHg and PaO2242.5 mmHg upon 50%oxygenation afterward.CONCLUSION Using an endotracheal tube as a supraglottic airway device,patients may have increased survival without experiencing life-threatening desaturation.展开更多
Background: The critically ill or injured patient undergoing military medical evacuation may require emergent intubation. Intubation may be life-saving, but it carries risks.The novice or infrequent laryngoscopist has...Background: The critically ill or injured patient undergoing military medical evacuation may require emergent intubation. Intubation may be life-saving, but it carries risks.The novice or infrequent laryngoscopist has a distinct disadvantage because experience is critical for the rapid and safe establishment of a secured airway. This challenge is compounded by the austere environment of the back of an aircraft under blackout conditions. This study determined which of five different video-assisted intubation devices(VAIDs) was best suited for in-flight use by U.S. Air Force Critical Care Air Transport Teams by comparing time to successful intubation between novice and expert laryngoscopists under three conditions, Normal Airway Lights on(NAL), Difficult Airway Lights on(DAL) and Difficult Airway Blackout(DAB), using manikins on a standard military transport stanchion and the floor with a minimal amount of setup time and extraneous light emission.Methods: A convenience sample size of 40 participants(24 novices and 16 experts) attempted intubation with each of the 5 different video laryngoscopic devices on high-fidelity airway manikins. Time to tracheal intubation and number of optimization maneuvers used were recorded. Kruskal-Wallis testing determined significant differences between the VAIDs in time to intubation for each particular scenario. Devices with significant differences underwent pair-wise comparison testing using rank-sum analysis to further clarify the difference. Device assembly times, startup times and the amount of light emitted were recorded. Perceived ease of use was surveyed. Results: Novices were fastest with the Pentax AWS in all difficult airway scenarios. Experts recorded the shortest median times consistently using 3 of the 5 devices. The AWS was superior overall in 4 of the 6 scenarios tested. Experts and novices subjectively judged the Glide Scope Ranger as easiest to use. The light emitted by all the devices was less than the USAF-issued headlamp.Conclusion: Novices intubated fastest with the Pentax AWS in all difficult airway scenarios. The Glide Scope required the shortest setup time, and participants judged this device as the easiest to use. The Glide Scope and AWS exhibited the two fastest total setup times. Both devices are suitable for in-flight use by infrequent and seasoned laryngoscopists. Trial registration: not applicable.展开更多
BACKGROUND In recent years,people have paid more attention to oral health with the development of stomatology.Due to the various physiological changes during pregnancy,such as changing hormone levels and immune functi...BACKGROUND In recent years,people have paid more attention to oral health with the development of stomatology.Due to the various physiological changes during pregnancy,such as changing hormone levels and immune functions,oral diseases have a high incidence during pregnancy,and the prevention and treatment of oral diseases have also received the attention of both dentists and obstetricians.However,the anesthetic management of pregnant patients with oral disease,especially severe maxillofacial infections,and patients who need surgical treatment or have obstetric emergencies and need to terminate their pregnancy is not clear.CASE SUMMARY This article describes a parturient patient with a severe masseteric space infection who had an emergency cesarean section.CONCLUSION This case report aims to discuss the important anesthetic considerations for these patients.展开更多
Importance:The COVID-19 pandemic is characterized by high transmissibility from patients with prolonged minimally-or asymptomatic periods,with a particularly increased risk of spread during aerosol-generating procedur...Importance:The COVID-19 pandemic is characterized by high transmissibility from patients with prolonged minimally-or asymptomatic periods,with a particularly increased risk of spread during aerosol-generating procedures,including endotracheal intubation.Observations:All patients presenting with upper airway obstruction due to angioedema during this time should be carefully managed in a way that is safest for both patient and provider.Conclusions:For patients requiring emergent airway management during the COVID-19 pandemic,minimization of aerosols while taking the necessary precautions to protect health-care workers should are critical principles for their management.展开更多
文摘Airway ultrasound allows for precise airway evaluation,particularly for assessing the difficult airway and the potential for front of neck access.Many studies have shown that identification of the cricothyroid membrane by airway ultrasound is more accurate than digital palpation.However,no reports to date have provided clinical evidence that ultrasound identification of the cricothyroid membrane increases the success rate of cricothyroidotomy.This is a narrative review which describes patients with difficult airways for whom airway ultrasound may have been useful for clinical decision making.The role of airway ultrasound for the evaluation of difficult airways is summarized and an approach to the use of ultrasound for airway management is proposed.The goal of this review is to present practical applications of airway ultrasound for patients predicted to have a difficult airway and who undergo cricothyroidotomy.
基金Supported by Key Clinical Projects of Peking University Third Hospital,No. BYSYZD2021013Beijing Haidian District Innovation and transformation project,No. HDCXZHZB2021202。
文摘BACKGROUND Cervical haemorrhage due to spontaneous rupture of a parathyroid adenoma is a rare complication that may cause life-threatening acute airway compromise.CASE SUMMARY A 64-year-old woman was admitted to the hospital 1 day after the onset of right neck enlargement, local tenderness, head-turning difficulty, pharyngeal pain, and mild dyspnoea. Repeat routine blood testing showed a rapid decrease in the haemoglobin concentration, indicating active bleeding. Enhanced computed tomography images showed neck haemorrhage and a ruptured right parathyroid adenoma. The plan was to perform emergency neck exploration, haemorrhage removal, and right inferior parathyroidectomy under general anaesthesia. The patient was administered 50 mg of intravenous propofol, and the glottis was successfully visualised on video laryngoscopy. However, after the administration of a muscle relaxant, the glottis was no longer visible and the patient had a difficult airway that prevented mask ventilation and endotracheal intubation. Fortunately, an experienced anaesthesiologist successfully intubated the patient under video laryngoscopy after an emergency laryngeal mask placement. Postoperative pathology showed a parathyroid adenoma with marked bleeding and cystic changes. The patient recovered well without complications.CONCLUSION Airway management is very important in patients with cervical haemorrhage. After the administration of muscle relaxants, the loss of oropharyngeal support can cause acute airway obstruction.Therefore, muscle relaxants should be administered with caution. Anaesthesiologists should pay careful attention to airway management and have alternative airway devices and tracheotomy equipment available.
文摘BACKGROUND Reports on perioperative anesthesia management in pediatric patients with difficult airways are scarce.In addition to relatively more difficulties in the technique of endotracheal intubation,the time for manipulation is restricted compared to adults.Securing the airways safely and avoiding the occurrence of hypoxemia in these patients are of significance.CASE SUMMARY A 9-year-old boy with spastic cerebral palsy,severe malnutrition,thoracic scoliosis,thoracic and airway malformation,laryngomalacia,pneumonia,and epilepsy faced the risk of anesthesia during palliative surgery.After a thorough preoperative evaluation,a detailed scheme for anesthesia and a series of intu-bation tools were prepared by a team of anesthesiologists.Awake fiberoptic intubation is the widely accepted strategy for patients with anticipated difficult airways.Given the age and medical condition of the patient,we kept him sedated with spontaneous breathing during endotracheal intubation.The endotracheal intubation was completed on the second attempt after the failure of the first effort.Fortunately,the surgery was successful without postoperative complications.CONCLUSION Dealing with difficult airways in the pediatric population,proper sedation allows time to intubate without interrupting spontaneous breathing.The appropriate endotracheal intubation method based on the patient’s unique characteristics is the key factor in successful management of these rare cases.
文摘BACKGROUND Difficult airway is a significant cause of anesthesia-associated death and disability.Currently,physical examinations of thyromental distance,mouth opening,Mafampaii classification,etc.combined with X-ray,computed tomography(CT),and other imaging technologies are mainly used to evaluate difficult airways.However,in many special cases,i.e.,emergency surgery,imaging examinations cannot be completed preoperatively.Such patients’airway can only be evaluated through general physical examination,which inevitably increases the likelihood of an unexpected difficult airway during anesthesia.CASE SUMMARY We report a rare case of difficult intubation because of severe upper trachea distortion after induction.Emergency holmium laser lithotripsy was performed under transurethral ureteroscopy because the patient had anuria for 4 d and a creatinine level of 890μmol/L.Due to the urgency of the condition,chest radiography or chest CT was not examined before surgery and the anesthesiologist did not evaluate the airway adequately,resulting in an unexpected difficult airway.CONCLUSION The incidence of tracheal malformation and tracheal stenosis is extremely low,but the risk of hypoxia and even death due to difficult airways is extremely high for such patients.It is recommended to complete preoperative imaging examinations of the airway.For life-threatening emergency patients,a pre-anesthesia reassessment should be performed and surgeons should be prepared to prevent and manage the difficult airway.
文摘To the Editor:Airway management is a crucial skill for emergency physician,who's often called to deal with difficult airways and requests for quick,simple and effective responses,as the many factors responsible for difficulties might be enhanced by emergency setting.[1]We now have many rescue devices as the LMA,I-gel,but they do
文摘Background:Identifying a potentially difficult airway is crucial both in anaesthesia in the operating room(OR)and non-operation room sites.There are no guidelines or expert consensus focused on the assessment of the difficult airway before,so this expert consensus is developed to provide guidance for airway assessment,making this process more standardized and accurate to reduce airway-related complications and improve safety.Methods:Seven members from the Airway Management Group of the Chinese Society of Anaesthesiology(CSA)met to discuss the first draft and then this was sent to 15 international experts for review,comment,and approval.The Grading of Recommendations,Assessment,Development and Evaluation(GRADE)is used to determine the level of evidence and grade the strength of recommendations.The recommendations were revised through a three-round Delphi survey from experts.Results:This expert consensus provides a comprehensive approach to airway assessment based on the medical history,physical examination,comprehensive scores,imaging,and new developments including transnasal endoscopy,virtual laryngoscopy,and 3D printing.In addition,this consensus also reviews some new technologies currently under development such as prediction from facial images and voice information with the aim of proposing new research directions for the assessment of difficult airway.Conclusions:This consensus applies to anesthesiologists,critical care,and emergency physicians refining the preoperative airway assessment and preparing an appropriate intubation strategy for patients with a potentially difficult airway.
文摘<b>Background:</b> Emergency endotracheal intubations (EEI) performed outside of operating theatre (OT) tend to be more challenging and associated with higher risk of complications. In 2011, with the objective of improving patient outcomes, we set up an Emergency Airway Service (EAS) at our 1000-bed regional hospital, with the aim of providing specialized assistance for outside of OT difficult airway management. <b>Method:</b> A retrospective audit of EAS activation from 12/9/2016 and 27/10/2020 was conducted. EAS forms and electronic medical records were reviewed. We collected information on patient characteristics, EAS activation characteristics and its outcomes. Descriptive analysis method was used to present the collected data. <b>Results:</b> There were a total of 275 activations, of which 268 were analysed. Reasons for activation were anticipated difficult intubation (42.2% n = 113), failed intubation attempt (52.6%, n = 141) and advanced intubation equipment required (5.2% n = 14). Intubation was attempted in 261/268 (97.4%) cases by the EAS team. Of these, 255 (97.7%) cases were successful while 6 (2.3%) cases failed intubation. Of the successful intubations by the EAS team, 208/255 (81.5%) were successful on the first attempt. Out of the 6 unsuccessful intubation cases, 1 case required a rescue cricothyroidotomy and 4 cases required an open tracheostomy. Intubation was deemed easy by the EAS team in 170/261 (65.1%) cases. 64/170 (37.6%) cases were intubated with a video laryngoscope (VL). There were 85 cases (32.3%) classified as difficult intubation by the EAS specialist, 13/85 (15.3%) were intubated using only VL, 54/85 (63.5%) cases were intubated using VL with style/bougie. <b>Conclusion:</b> Audit results showed that providing an experienced and well-equipped team of airway specialists round-the-clock to assist in difficult and potentially difficult endotracheal intubations is justifiable and may reduce complications associated with EEI.
文摘BACKGROUND Epiglottic cysts is a rare but potentially lethal supraglottic airway pathology in infants due to the high risk of cannot intubation or cannot ventilation.Awake fiberoptic intubation appeared to be the safest technique,but it is very challenging in infants with large epiglottic cysts.Even it has the risk of airway loss.We report that cyst aspiration is an effective treatment as the first-choice procedure for airway management in an infant with large epiglottic cysts.CASE SUMMARY A 46-day-old male infant weighing 2.3 kg presented to the emergency room with difficulty feeding,worsening stridor,and progressive respiratory distress.Epiglottic cysts was diagnosed,but fibro bronchoscopy examination failed,as the fiberoptic bronchoscope was unable to cross the epiglottic cysts to the trachea.The infant was transferred to the operating room for emergency cystectomy under general anesthesia.Spontaneous respiration was maintained during anesthesia induction,and cyst aspiration was performed as the first procedure for airway management under video laryngoscopy considering that the preoperative fibro bronchoscopy examination failed.Then,the endotracheal tube was intubated successfully.Cystectomy was performed uneventfully,and the infant was safely transferred to the intensive care unit after surgery.The infant was extubated smoothly on the third postoperative day and discharged on the eighth day after surgery.On follow-up 1 year after the surgery,a normal airway was found by fibro bronchoscopy examination.CONCLUSION Epiglottic cyst aspiration can be considered the first procedure for airway management in infants with large epiglottic cysts.
文摘Coronavirus Disease 2019(COVID-19),caused by a novel coronavirus(SARS-Co V-2),is a highly contagious disease.It firstly appeared in Wuhan,Hubei province of China in December 2019.During the next two months,it moved rapidly throughout China.Most of the infected patients have mild symptoms including fever,fatigue and cough,but in severe cases,patients can progress rapidly and develop into acute respiratory distress syndrome,septic shock,metabolic acidosis and coagulopathy.The new coronavirus was reported to spread via droplets,contact and natural aerosols from human to human.Therefore,aerosol-producing procedures such as endotracheal intubation may put the anesthesiologists at high risk of nosocomial infections.In fact,SARSCo V-2 infection of anesthesiologists after endotracheal intubation for confirmed COVID-19 patients have been reported in hospitals in Wuhan.The expert panel of airway management in Chinese Society of Anaesthesiology has deliberated and drafted this recommendation,by which we hope to guide the performance of endotracheal intubation by frontline anesthesiologists and critical care physicians.During the airway management,enhanced droplet/airborne personal protective equitment(PPE)should be applied to the health care providers.A good airway assessment before airway intervention is of vital importance.For patients with normal airway,awake intubation should be avoided,and modified rapid sequence induction is strongly recommended.Sufficient muscle relaxant should be assured before intubation.For patients with difficult airway,good preparation of airway devices and detailed intubation plans should be made.
基金Supported by National Natural Science Foundation of China,No.81672250Special Fund for Resident Training in Qilu Hospital of Shandong University,No.ZPZX2019A08.
文摘BACKGROUND Patients with ankylosing spondylitis(AS)combined with severe cervical fusion deformity have difficult airways.Awake fiberoptic intubation is the standard treatment for such patients.Alleviating anxiety and discomfort during intubation while maintaining airway patency and adequate ventilation is a major challenge for anesthesiologists.Bronchial blockers(BBs)have significant advantages over double-lumen tubes in these patients requiring one-lung ventilation.AIM To evaluate effective drugs and their optimal dosage for awake fiberoptic nasotracheal intubation in patients with AS and to assess the pulmonary isolation effect of one-lung ventilation with a BB.METHODS We studied 12 AS patients(11 men and one woman)with lung or esophageal cancer who underwent thoracotomy with a BB.Preoperative airway evaluation found that all patients had a difficult airway.All patients received an intramuscular injection of penehyclidine hydrochloride(0.01 mg/kg)before anesthesia.In the operating room,dexmedetomidine(0.5μg/kg)was infused intravenously for 10 min,with 2%lidocaine for airway surface anesthesia,and a 3%ephedrine cotton swab was used to contract the nasal mucosa vessels.Before tracheal intubation,fentanyl(1μg/kg)and midazolam(0.02 mg/kg)were administered intravenously.Awake fiberoptic nasotracheal intubation was performed in the semi-reclining position.Intravenous anesthesia was administered immediately after successful intubation,and a BB was inserted laterally.The pre-intubation preparation time,intubation time,facial grimace score,airway responsiveness score during the fiberoptic introduction,time of end tracheal catheter entry into the nostril,and lung collapse and surgical field score were measured.Systolic blood pressure(SBP),diastolic blood pressure(DBP),and heart rate(HR)were recorded while entering the operation room(T1),before intubation(T2),immediately after intubation(T3),2 min after intubation(T4),and 10 min after intubation(T5).After surgery,all patients were followed for adverse reactions such as epistaxis,sore throat,hoarseness,and dysphagia.RESULTS All patients had a history of AS(20.4±9.6 years).They had a Willson's score of 5 or above,grade III or IV Mallampati tests,an inter-incisor distance of 2.9±0.3 cm,and a thyromental(T-M)distance of 4.8±0.7 cm.The average pre-intubation preparation time was 20.4±3.4 min,intubation time was 2.6±0.4 min,facial grimace score was 1.7±0.7,airway responsiveness score was 1.1±0.7,and pulmonary collapse and surgical exposure score was 1.2±0.4.The SBP,DBP,and HR at T5 were significantly lower than those at T1-T4(P<0.05).While the values at T1 were not significantly different from those at T2-T4(P>0.05),they were significantly different from those at T5(P<0.05).Seven patients had minor epistaxis during endotracheal intubation,two were followed 24 h after surgery with a mild sore throat,and two had hoarseness without dysphagia.CONCLUSION Patients with AS combined with severe cervical and thoracic kyphosis should be intubated using fiberoptic bronchoscopy under conscious sedation and topical anesthesia.Proper doses of penehyclidine hydrochloride,dexmedetomidine,fentanyl,and midazolam,combined with 2%lidocaine,administered prior to intubation,can provide satisfactory conditions for tracheal intubation while maintaining the comfort and safety of patients.BBs are safe and effective for onelung ventilation in such patients during thoracotomy.
文摘BACKGROUND A“cannot intubate,cannot oxygenate(CICO)”situation is a life-threatening condition that requires emergent management to establish a route for oxygenation to prevent oxygen desaturation.In this paper,we describe airway management in a patient with an extended parotid tumor that invaded the airways during CICO using the endotracheal tube tip in the pharynx(TTIP)technique.CASE SUMMARY A 43-year-old man was diagnosed with parotid tumor for>10 years.Computed tomography and nasopharyngeal fiberoptic examination revealed a substantial mass from the right parotid region with a deep extension through the lateral pharyngeal region to the retropharyngeal region and obliteration of the nasopharynx to the oropharynx.Tumor excision was arranged.However,we encountered CICO during anesthesia induction.An endotracheal tube was used as an emergency supraglottic airway device(TTIP)to ventilate the patient in a CICO situation where other tools such as laryngeal mask airway or mask ventilation were not suitable for this complicated and difficult airway.The patient did not experience desaturation despite sudden loss of definite airway.During tracheostomy,the pulse oximetry remained 100%with our technique of ventilating the patient.The arterial blood gas analysis revealed PaCO_(2)35.7 mmHg and PaO2242.5 mmHg upon 50%oxygenation afterward.CONCLUSION Using an endotracheal tube as a supraglottic airway device,patients may have increased survival without experiencing life-threatening desaturation.
基金Award number FA8650-11-2-6B03 was issued on October 27,2010 by the United States Air Force's Air Force Materiel Command at USAF/AFMC,Det 1 AF Research Laboratory,2310 Eight St.,Building 167,Wright-Patterson AFB,OH,USA for the allocated sum of $124,000.00 with an award amount of $132,373.00 by Grant Officer Timothy Hannah.The Principal Investigator on the award was Dr.Todd E.Carter
文摘Background: The critically ill or injured patient undergoing military medical evacuation may require emergent intubation. Intubation may be life-saving, but it carries risks.The novice or infrequent laryngoscopist has a distinct disadvantage because experience is critical for the rapid and safe establishment of a secured airway. This challenge is compounded by the austere environment of the back of an aircraft under blackout conditions. This study determined which of five different video-assisted intubation devices(VAIDs) was best suited for in-flight use by U.S. Air Force Critical Care Air Transport Teams by comparing time to successful intubation between novice and expert laryngoscopists under three conditions, Normal Airway Lights on(NAL), Difficult Airway Lights on(DAL) and Difficult Airway Blackout(DAB), using manikins on a standard military transport stanchion and the floor with a minimal amount of setup time and extraneous light emission.Methods: A convenience sample size of 40 participants(24 novices and 16 experts) attempted intubation with each of the 5 different video laryngoscopic devices on high-fidelity airway manikins. Time to tracheal intubation and number of optimization maneuvers used were recorded. Kruskal-Wallis testing determined significant differences between the VAIDs in time to intubation for each particular scenario. Devices with significant differences underwent pair-wise comparison testing using rank-sum analysis to further clarify the difference. Device assembly times, startup times and the amount of light emitted were recorded. Perceived ease of use was surveyed. Results: Novices were fastest with the Pentax AWS in all difficult airway scenarios. Experts recorded the shortest median times consistently using 3 of the 5 devices. The AWS was superior overall in 4 of the 6 scenarios tested. Experts and novices subjectively judged the Glide Scope Ranger as easiest to use. The light emitted by all the devices was less than the USAF-issued headlamp.Conclusion: Novices intubated fastest with the Pentax AWS in all difficult airway scenarios. The Glide Scope required the shortest setup time, and participants judged this device as the easiest to use. The Glide Scope and AWS exhibited the two fastest total setup times. Both devices are suitable for in-flight use by infrequent and seasoned laryngoscopists. Trial registration: not applicable.
文摘BACKGROUND In recent years,people have paid more attention to oral health with the development of stomatology.Due to the various physiological changes during pregnancy,such as changing hormone levels and immune functions,oral diseases have a high incidence during pregnancy,and the prevention and treatment of oral diseases have also received the attention of both dentists and obstetricians.However,the anesthetic management of pregnant patients with oral disease,especially severe maxillofacial infections,and patients who need surgical treatment or have obstetric emergencies and need to terminate their pregnancy is not clear.CASE SUMMARY This article describes a parturient patient with a severe masseteric space infection who had an emergency cesarean section.CONCLUSION This case report aims to discuss the important anesthetic considerations for these patients.
文摘Importance:The COVID-19 pandemic is characterized by high transmissibility from patients with prolonged minimally-or asymptomatic periods,with a particularly increased risk of spread during aerosol-generating procedures,including endotracheal intubation.Observations:All patients presenting with upper airway obstruction due to angioedema during this time should be carefully managed in a way that is safest for both patient and provider.Conclusions:For patients requiring emergent airway management during the COVID-19 pandemic,minimization of aerosols while taking the necessary precautions to protect health-care workers should are critical principles for their management.
