BACKGROUND: Exercise testing is an importnat diagnostic and prognostic procedure in the assessment of patients with ischemic heart disease. But standard ST-segment depression criteria was not high enough to estimate coronary srtery disease. Recently, the heart rate adjustment of ST segment depression, ST segment/heart rate slope and index, have been proposed as a more accurate criteria for diagnosing significant coronary artery disease. The objective of this study was to compare the discriminating power of proposed ST segment/heart rate slope and index with that of a standard method of assessing exercise-induced ST segment depression for estimating coronary artery disease. METHODS: Sixty nine patients with ischemic heart disease were studied with exercise treadmill testing and coronary angiography. Computer-measured ST-segment amplitudes were obtained and analysis of the heart rate-adjusted ST segment depression(ST/HR slope and big up tri, Delta ST/HR index) was done. The sensitivity, specificity, and extent of coronary artery disease on each criteria were compared. RESULTS: 1) The sensitivity of big up tri, Delta ST/HR index partition of 1.6uV/beats/min was slightly higher(83%) and the specificity of ST/HR slope partition of 2.4uV/beats/min was higher(87%) than the standard exercise electrocardiographic criteria. 2) Early onset of ischemic ST-segment depression, profound ST-segment depression(> or =2mm), and downsloping ST-segment were associated with more extensive coronary artery disease. 3) On ST/HR slope, no CAD was 1.7+/-0.26uV/beats/min, one vessel disease was 2.6+/-0.34 uV/beats/min, two vessel disease was 2.7+/-1.36uV/beats/min, one vessel disease was 2.8+/-0.35uV/beats/min, and on big up tri, Delta ST/HR index, no CAD was 1.8+/-0.38uV/beats/min, one vessel disease was 2.8+/-1.36uV/beats/min, two vessel disease 3.4+/-1.44uV/beats/min, and three vessel disease was 3.7+/-2.95uV/beats/min. The increment of ST/HR slope and big up tri, Delta ST/HR index were associated with the coronary artery disease and its severity, but the correlations were not high enough. CONCLUSION: The heart rate adjustment of ST segment depression was not high enough for improved detection of coronary artery disease, compared with standard ST-segment depression criteria. But these indexes can be improved the clinical usefulness of the treadmill exercise test for coronary aretry disease.
Coronary Angiography ; Coronary Artery Disease* ; Coronary Vessels* ; Depression* ; Electrocardiography ; Exercise Test ; Heart Rate* ; Heart* ; Humans ; Myocardial Ischemia* ; Sensitivity and Specificity

Percutaneous catheter drainage has been reported to bean effective method in the management of selectedpatients with abscess and fluid collection. Its high sucess rate and relatively low complications make theprocedure an alternative to surgery in the individual cases. During past two years percutaneous catheter dainagein 25 patients with intraabdominal abscesses and fluid collection was performed at the Department of Radiology,Yonsei Universtiy College of medicine. Here the technique and auathor's results were summarized; 1. The total 25patients who had percutaneous catheter drainage are 10 liver abscesses, 3 subphrenic, one subhepatic, 4 renal andperirenal, 2 pelvic, one psoas, one anterior pararenal fluid from acute pancreatitis, one pancreas pseudocyst and2 malignant tumor necrosis. 2. The modified Seldinger technique used for all cases of abscess and fluid draingeunder guidence of ultrasound scan. The used catheters were 10F. Pigtail and 14F. Malecot (Cook c/o) catheters. 3.The abscesses and fluid of 17 patients among 25 were cured by the percutaneous catheter drainage and 4 patientswere clinically improved. The catheter drainage was failed in 2 patients and 3 complications were developed. 4.The success rate of this procefure was 91.3%, failure rate was 8.7% and complication rate was 12%.
Abscess ; Catheters ; Drainage ; Humans ; Liver Abscess ; Methods ; Necrosis ; Pancreas ; Pancreatitis ; Ultrasonography

No Abstract Available.
Humans ; Kidney Failure, Chronic* ; Rupture* ; Tendons*

No abstract available.
Spine*

No abstract available.
Immunosuppression* ; Prognosis* ; Transplantation*

No abstract available.
Gonadal Dysgenesis, 46,XY*

Measurement of the evoked action potential in muscle as an adjunctive to the clinical evaluation of peripheral nerve lesion resulted in the more frequent use of compound muscle action potential to evaluate peripheral nerve problems. Recently, the intraoperative use of nerve stimulation and recording technique have made it possible to evaluate the peripheral nerve problems intraoperatively. The present study was, therefore, undertaken to address this question in rabbit sciatic nerves and to determine intraoperative stimulation and recording technique are practical in clinical situations. A low-heat injury to the sciatic nerve was induced by perfusing 60degrees C saline around the nerve for 30 minutes and followed the courses of functional and morphological recovery of the nerve for 16 weeks. The results are ,summarized as follows ; In the test of compound muscle action potential(CMAP), the average amplitude and the onset latency were markedly attenuated at 4 and 8 week after the low-heat treatment (1.2mV, 4.2mV)(3.58msec, 2.68msec)(p=0.045, p=0.039). It progressively reverted to tile control level, showing 0.63 msec at 16 weeks. In the test of intraoperative nerve action potential(INAP), the average amplitude and the onset latency were attenuated at 4 and 8 weeks after the low-heat treatment(1.8mV, 2.1 mV)(1.18msec, 1.05msec)(p=0.041, p=0.043). There existed a significant positive correlation between the amplitude and onset latencies of INAP and CMAP measured in Low-heat group(r=0.67, r=0.71, p=0.003, p=0.009). Similar pattern of amplitude and onset latency between tests of CMAP and INAP suggests that INAP was practical and useful.
Action Potentials* ; Nerve Regeneration ; Pasteurization ; Peripheral Nerves ; Regeneration* ; Sciatic Nerve*

No abstract available.
Decompression* ; Ossification of Posterior Longitudinal Ligament*

No abstract available.
China* ; Depression* ; Republic of Korea*

communicable diseases. The purposes of the study is to estimate reporting proportion of National Notifiable Infectious Diseases(NNIDs) and investigate characteristics related to reporting using KAP(knowledge, attitude, practice) model. METHOD: We surveyed randomly selected 2,185 physicians (speciality: internal medicine, family medicine, pediatrics, dermatology, general physicians) of their knowledge, attitude, and practice of NNIDs reporting through self-administered mail questionnaires. Of them, 231 physicians responded (response proportion: 10.6%). RESULT: The reporting proportion was estimated to 27.0%. Recognition level (knowledge) of NNIDs was relatively high with proportion of 69.4%, and attitude (public health importance) of reporting was 65.8%. Multiple logistic regression analysis showed that knowledge, attitude significantly affected physicians' reporting in a positive direction (O.R. 6.2, 6.2 respectively). Whereas, senior age group, specialty (family medicine, pediatrics, dermatology) showed significantly lower reporting. General (tertiary care) hospital level of care showed significantly higher reporting practice (alpha=0.05). CONCLUSION: The NNIDs reporting proportion, 27.0% is similar with those studied recently. Continuous efforts to increase the performance level of communicable diseases surveillance system. Of those, restructuring surveillance systems considering characteristics of notifiable diseases classes must be stressed. Educational approach of physicians needs to be tailored specially to newly-designated diseases such as Group II, Designated Group NNIDs.
Communicable Diseases* ; Dermatology ; Humans ; Internal Medicine ; Logistic Models ; Pediatrics ; Postal Service ; Surveys and Questionnaires