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先证者女性,17岁,未婚,学生。因乏力、晕厥数次而入院。查体:体温36.3℃,心率50次/min,呼吸18次/min,神志清楚。心律齐,各瓣膜区未闻及病理性杂音。双肺、腹部无异常。双下肢无水肿,神经系统无阳性体征。多次心电图检查:窦性心动过缓伴窦性心律不齐、预激综合征,P 波高尖,心率在39～43次/min(图1)。超声心动图检查显示:左室低位乳头肌水平以下左室后壁及侧壁正常心肌变薄,约4 mm;心内膜面为血窦和小梁样结构,交织呈“蜂窝”状,厚约17 mm;正
Probate female, 17 years old, single, student. Due to fatigue, fainting several times and admitted to hospital. Physical examination: body temperature 36.3 ℃, heart rate 50 beats / min, breathing 18 beats / min, conscious. Qi heart, the valve area is not known and pathological murmur. Two lungs, abdomen without exception. No lower extremity edema, nervous system no positive signs. Multiple electrocardiographic examination: sinus bradycardia with sinus arrhythmia, pre-excitation syndrome, P wave tip, the heart rate at 39 to 43 beats / min (Figure 1). Echocardiography showed that left ventricular posterior papillary muscle below the level of the left ventricular posterior wall and normal wall of the thin side of the myocardium, about 4 mm; endocardial sinusoidal and trabecular-like structure, interweaved “honeycomb” , 17 mm thick; positive