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作者对30名18～35岁健康的服用口服避孕药及不服药妇女进行了左心室大小及功能研究。分成两组,每组15名,对照组在研究前6个月内未用口服避孕药或其他含雌激素的药物,服药组连续使用口服避孕药3个月以上。所有对象于月经第十至二十天间进行心脏收缩时间间隔测定及超声心动图检查,同时作心电图、颈动脉脉冲示踪和心音图,求出5个连续的心动周期的平均值,并进行t测验。结果表明,两组的年龄、体表面积、月经情况均相似,用药和对照组的平均心率分别为78±9次/分与72±12次/分,血压分别为116±8/72±7 mmHg与110±11/67±9 mmHg,左室喷血时间(left ventricular ejection time)/喷血前期(preejection period)为0.31±0.05与0.29
The authors conducted a study of left ventricular size and function in 30 healthy 18- to 35-year-old oral contraceptives and non-medication women. Divided into two groups of 15 each. The control group did not use oral contraceptives or other estrogen-containing drugs within the first 6 months of the study. The oral contraceptives were continuously administered for more than 3 months in the medication group. All subjects in the menstrual between the first ten to twenty days of systolic time interval measurement and echocardiography, at the same time for electrocardiogram, carotid artery pulse tracing and phonocardiogram to find the average of five consecutive cardiac cycles, and t test. The results showed that the two groups were similar in age, body surface area, menstrual conditions, medication and control group, the average heart rate were 78 ± 9 beats / min and 72 ± 12 beats / min, blood pressure was 116 ± 8/72 ± 7 mmHg With 110 ± 11/67 ± 9 mmHg, left ventricular ejection time / preejection period was 0.31 ± 0.05 and 0.29