AIM To investigate the role of bloodtransfusion in TT viral infection(TTV).METHODS We retrospectively studied serumsamples from 192 transfusion recipients whounderwent cardiovascular surgery and bloodtransfusion betwe...AIM To investigate the role of bloodtransfusion in TT viral infection(TTV).METHODS We retrospectively studied serumsamples from 192 transfusion recipients whounderwent cardiovascular surgery and bloodtransfusion between July 1991 and June 1992.Allpatients had a follow-up every other week for atleast 6 months after transfusion.Eightyrecipients received blood before screeningdonors for hepatitis C antibody(anti-HCV),and112 recipients received screened blood.Recipients with alanine aminotransferase level】2.5 times the upper normal limit were testedfor serological markers for viral hepatitis A,B,C,G,Epstein-Barr virus and cytomegalovirus.TTV infection was defined by the positivity forserum TTV DNA using the polymerase chainreaction method.RESULTS Eleven and three patients,whoreceived anti-HCV unscreened and screened'blood,respectively,had serum ALT levels】90 IU/L.Five patients(HCV and TTV:1;HCV,HGV,and TTV:1;TTV:2;and CMV and TTV:1)were positive for TTV DNA,and four of them hadsero-conversion of TTV DNA.CONCLUSION TTV can be transmitted viablood transfusion.Two recipients infected byTTV alone may be associated with the hepatitis.However,whether TTV was the causal agentremains unsettled,and further studies arenecessary to define the role of TTV infection inchronic hepatitis.展开更多
AIM To evaluate the efficacy of endoscopichemoclip in the treatment of bleeding pepticulcer.METHODS Totally,40 patients with F1a andFib hemorrhagic activity of peptic ulcers wereenrolled in this uncontrolled prospecti...AIM To evaluate the efficacy of endoscopichemoclip in the treatment of bleeding pepticulcer.METHODS Totally,40 patients with F1a andFib hemorrhagic activity of peptic ulcers wereenrolled in this uncontrolled prospective studyfor endoscopic hemoclip treatment.We used anewly developed rotatable clip-device for theapplication of hemoclip(MD850)to stopbleeding.Endoscopy was repeated if there wasany sign or suspicion of rebleeding,and re-clipping was performed if necessary andfeasible.RESULTS Initial hemostatic rate by clippingwas 95%,and rebleeding rate was only 8%.Ultimate hemostatic rates were 87%,96%,and93% in the Fla and Flb subgroups,and totalcases,respectively.In patients with shock onadmission,hemoclipping achieved ultimatehemostasis of 71% and 83% in F1a and F1bsubgroups,respectively.Hemostasis reached100% in patients without shock regardless ofhemorrhagic activity being F1a or F1b.Theaverage number of clips used per case was 3.0(range 2-5).Spurting bleeders required moreclips on average than did oozing bleeders(3.4versus 2.8).We observed no obviouscomplications,no tissue injury,or impairmentof ulcer healing related to hemoclipping.CONCLUSION Endoscopic hemoclip placementis an effective and safe method.With theimprovement of the clip and application device,the procedure has become easier and much moreefficient.Endoscopic hemoclipping deservesfurther study in the treatment of bleeding pepticulcers.展开更多
文摘AIM To investigate the role of bloodtransfusion in TT viral infection(TTV).METHODS We retrospectively studied serumsamples from 192 transfusion recipients whounderwent cardiovascular surgery and bloodtransfusion between July 1991 and June 1992.Allpatients had a follow-up every other week for atleast 6 months after transfusion.Eightyrecipients received blood before screeningdonors for hepatitis C antibody(anti-HCV),and112 recipients received screened blood.Recipients with alanine aminotransferase level】2.5 times the upper normal limit were testedfor serological markers for viral hepatitis A,B,C,G,Epstein-Barr virus and cytomegalovirus.TTV infection was defined by the positivity forserum TTV DNA using the polymerase chainreaction method.RESULTS Eleven and three patients,whoreceived anti-HCV unscreened and screened'blood,respectively,had serum ALT levels】90 IU/L.Five patients(HCV and TTV:1;HCV,HGV,and TTV:1;TTV:2;and CMV and TTV:1)were positive for TTV DNA,and four of them hadsero-conversion of TTV DNA.CONCLUSION TTV can be transmitted viablood transfusion.Two recipients infected byTTV alone may be associated with the hepatitis.However,whether TTV was the causal agentremains unsettled,and further studies arenecessary to define the role of TTV infection inchronic hepatitis.
文摘AIM To evaluate the efficacy of endoscopichemoclip in the treatment of bleeding pepticulcer.METHODS Totally,40 patients with F1a andFib hemorrhagic activity of peptic ulcers wereenrolled in this uncontrolled prospective studyfor endoscopic hemoclip treatment.We used anewly developed rotatable clip-device for theapplication of hemoclip(MD850)to stopbleeding.Endoscopy was repeated if there wasany sign or suspicion of rebleeding,and re-clipping was performed if necessary andfeasible.RESULTS Initial hemostatic rate by clippingwas 95%,and rebleeding rate was only 8%.Ultimate hemostatic rates were 87%,96%,and93% in the Fla and Flb subgroups,and totalcases,respectively.In patients with shock onadmission,hemoclipping achieved ultimatehemostasis of 71% and 83% in F1a and F1bsubgroups,respectively.Hemostasis reached100% in patients without shock regardless ofhemorrhagic activity being F1a or F1b.Theaverage number of clips used per case was 3.0(range 2-5).Spurting bleeders required moreclips on average than did oozing bleeders(3.4versus 2.8).We observed no obviouscomplications,no tissue injury,or impairmentof ulcer healing related to hemoclipping.CONCLUSION Endoscopic hemoclip placementis an effective and safe method.With theimprovement of the clip and application device,the procedure has become easier and much moreefficient.Endoscopic hemoclipping deservesfurther study in the treatment of bleeding pepticulcers.
