[Clinical study on relationship among Heart-Qi Deficiency, left ventricular function and myocardial ischemia in patients with coronary heart disease].

Objective: To study the relationship among Heart-Qi Deficiency (HQD), left ventricular function and myocardial ischemia in patients with coronary heart disease (CHD).

Methods: Doppler echocardiogram, electrocardiogram were used to observe 103 patients of CHD clinically. Patients of stable angina pectoris treated with Radix Codonopsitis Pilosulae (50 cases) or Nifedipine (20 cases) were observed as well.

Results: Occurrence of left ventricular function insufficiency, both systolic and diastolic, was higher in CHD patients of HQD type as compared with that of non-HQD type. The left ventricular diastolic function showed high susceptibility (87%) and the left ventricular systolic function showed high specificity (88%) for HQD evaluation. Radix Codonopsitis Pilosulae could protect the left ventricular function and improve myocardial ischemia.

Conclusions: Myocardial ischemia and blood stasis cause HQD, while the Chinese herbal medicine treatment on HQD could improve the blood stasis to alleviate myocardial ischemia effectively. The mechanism of which might be to enhance the positive diastolic and systolic function of cardiac muscles, reduce the resistance pressure and keep pressure of coronary perfusion so as to improve the blood supply of heart.