Conclusion: Left ventricular diastolic dysfunction is presented in patients with pulmonary hypertension.Hemodynamic change of coronary circulation may be an underlying mechanism.

• 结论：肺动脉高压患者存在左心室舒张功能障碍，除心室间相互作用外，冠状循环血液动力学的改变可能是肺动脉高压患者左心室舒张功能障碍的机制之一。