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肺动脉高压的定义与分级 肺动脉高压是指肺动脉平均压力长期升高,静息时超过20mmHg,负荷状态下超过30mmHg。根据其严重程度可分为3级。 潜在性肺动脉高压 静息时肺动脉平均压在正常范围(<20mmHg),负荷后超过30mmHg。由于可供代偿的血管床减少所致,少数情况下则是因血管主动性扩张受限引起。重度负荷时可有轻微的呼
Definition and Classification of Pulmonary Hypertension Pulmonary Hypertension refers to the long-term increase in mean pulmonary artery pressure over 20 mm Hg at rest and over 30 mm Hg at load. According to its severity can be divided into three levels. Pulmonary hypertension at rest rests with an average pulmonary artery pressure in the normal range (<20 mm Hg) and exceeds 30 mm Hg after loading. Due to the reduction of compensatory vascular beds, in a few cases it is caused by the limited expansion of vascular activity. Severe load may have a slight call