心電圖 ST-T에 關한 硏究 = Studies on the E. C. G. ST-T in Koreans

다국어 초록 (Multilingual Abstract)

Author analysed the ST-segments and T-waves by ST-segment, QX duration, QX/QT ratio, height of T-wave, duration of T-wave, T/R radio, duration of T-wave/QT interval radio (T/QT), height/duration ratio of T-wave (H/D of T) and T/U ratio in 183 cases of normal adults, 89 cases of postexercise ECG, 47 cases of angina pectoris, 73 cases of left ventricular hypertrophy, 41 cases of right ventricular hypertrophy, 51 cases of serum K abnormalities and 55 cases of serum Ca abnormalities with magnifying lens, following results were obtained.
1. Normal range of ST-segment in L₁~3 was-0.5~+1.0㎜, V₁-0.5+~2.0㎜, V₃-0.5~+3.0㎜ and V₃-0.5~+2.0㎜.
2. QX-duration in normal person was 0.09±0.02 seconds in lead 2, 0.09±0.03 seconds in V₃, QX/QT ratio in normal person was 0.24±0.12 in lead 2, 0.23±0.05 in V₃ and 0.22±0.08 in V_(5).
3. Height of T-wave in normal person was 3.3±1.2㎜ in lead 2 and 5.2±2.2㎜ in V_(5). Duration of T-wave in normal person was 0.12±0.05 seconds in lead 2, 0.24±0.04 seconds in V₃ and 0.37±0.15 seconds in V_(5).
4. Duraton of T-wave/QT interval ratio (T/QT) in normal person was 0.48±0.07 in lead 2, 0.59±0.20 in V₃ and 0.51±0.08 in V_(5). Height/Duration ratio of T-wave (H/D of T) in normal person was 18±6.1㎜/sec. In lead 2, 27.1±11.4㎜/sec. In V₃ and 26.4±10.1㎜/sec. In V_(5).
5. T-wave area in normal person was 0.30±0.13㎜. sec. In lead 2, 0.76±0.88㎜. sec. In V₃ and 0.52±0.24㎜. sec. In V₃. T/U ratio in normal person was 11.8±6.1 in lead 2, 12.4±6.2 in V₃ and 16.3±10.6 in V_(5).
6. ST-segment depression-0.5㎜ or more and QX/QT ratio 0.05 of more were the most reliable criteria for Master's two step exercise test. Also the T-wave area under 0.15㎜. sec. And T/R ratio under 0.20 were good criteria for the diagnosis of angina pictoris in exercise test.
7. ST-segment depression-0.5㎜ of more, QX/QT ratio 0.50 or more and T-wave area under 0.15㎜. sec. were significant findings in resting ECG of angina pectoris.
8. In left ventricular hypertrophy, ST-segment depression-0.5㎜ or more, QX/QT ratio 0.50 or more, T-wave area under 0.50 and T/R ratio under 0.20 were significant findings.
9. There were no significant findings in ST-T in right ventricular hypertrophy except T/U radio under 5.0.
10. Height of T-wave, T/R radio, H/D of T, T/U ratio and T-wave area were significantly decreased in hypokalemia and height of T-wave, T/R ratio, H/D of T and T/U ratio were significantly increased in hyperkalemia.
11. ECG ST-T were not changed significantly in hypocalcemia or hypercalcemia.
It was concluded that T/R ratio, T-wave area, H/D of T were useful criteria for the analysis of ST-T in various disease state as ST-segment level, QX/QT ratio and height of T-wave.

목차 (Table of Contents)

• Ⅰ. 緖論
• Ⅱ. 硏究對象 및 方法
• Ⅲ. 硏究成績
• A. 正常人의 心電圖 ST-T 波
• B. 運動負荷心電圖의 ST-T 波變化
• C. 狹心症의 心電圖 ST-T 波變化
• D. 左心室肥大의 心電圖 ST-T 波變化
• E. 右心室肥大의 心電圖 ST-T 波變化
• F. 血淸K値異常의 心電圖 ST-T 波變化
• G. 血淸Ca値異常의 心電圖 ST-T 波變化
• Ⅳ. 考按
• Ⅴ. 結論
• 參考文獻