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N-terminal pro-B-type natriuretic peptide as prognostic marker for patients of non ST-segment elevation myocardial infarction 被引量:2
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作者 ShoN ho Sun HWANG Kyung Kuk +3 位作者 BAE Jang Whan KIM Kyung Ah LEE Jong Yun ryu keun ho 《Journal of Central South University》 SCIE EI CAS 2013年第8期2226-2232,共7页
In this work, we analyzed only the patients of the NSTEMI (non ST-segment elevation myocardial infarction) who arrived at the hospital within 12 h after symptoms started. Using NSTEMI follow-up data within, the charac... In this work, we analyzed only the patients of the NSTEMI (non ST-segment elevation myocardial infarction) who arrived at the hospital within 12 h after symptoms started. Using NSTEMI follow-up data within, the characteristics of the clinical data, the risk factor, and the blood tested in the hospital visit were analyzed for MACE (major adverse cardiac events) patients. MACE includes cardiac death, MI (myocardial infarction), Re-PCI, and CABG (coronary artery bypass graft). As a result, from the NSTEMI patients which can be followed up for over 12 m, NT-ProBNP (p=0.014) and age (p=0.045) are found to be the independent risk factors related to MACE. Accordingly, they can be useful for the diagnosis and prognosis for NSTEMI patients as a biomarker. 展开更多
关键词 non ST-segment elevation myocardial infarction NT-PROBNP cardiovascular disease
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Sound transducer calibration of ambulatory audiometric system utilizing delta learning rule
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作者 KIM Kyeong-seop SHIN Seung-won +3 位作者 YOON Tae-ho LEE Sang-min LEE Insung ryu keun ho 《Journal of Central South University》 SCIE EI CAS 2011年第6期2009-2014,共6页
An efficient calibration algorithm for an ambulatory audiometric test system is proposed. This system utilizes a personal digital assistant (PDA) device to generate the correct sound pressure level (SPL) from an audio... An efficient calibration algorithm for an ambulatory audiometric test system is proposed. This system utilizes a personal digital assistant (PDA) device to generate the correct sound pressure level (SPL) from an audiometric transducer such as an earphone. The calibrated sound intensities for an audio-logical examination can be obtained in terms of the sound pressure levels of pure-tonal sinusoidal signals in eight-banded frequency ranges (250, 500, 1 000, 2 000, 3 000, 4 000, 6 000 and 8 000 Hz), and with mapping of the input sound pressure levels by the weight coefficients that are tuned by the delta learning rule. With this scheme, the sound intensities, which evoke eight-banded sound pressure levels by 5 dB steps from a minimum of 25 dB to a maximum of 80 dB, can be generated without volume displacement. Consequently, these sound intensities can be utilized to accurately determine the hearing threshold of a subject in the ambulatory audiometric testing environment. 展开更多
关键词 calibration audiometric system pure-tonal sound sound pressure level heating threshold delta learning rule
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