From clinical experiences,this paper discusses how to improve the injection way in intravanous injection,how to relief the patient and how to handle the special cases,so as to make the intravenous injection more effective and gain precious time in the act of saving person.

Evaluation of cardiac contractility and relaxation during no-reflow phenomenon by the combination of Doppler tissue imaging with myocardial contrast echocardiography;

The interaction between nitric oxide and hydrogen sulfide on the relaxation reactivity of pulmonary arteries in rats;

The influence of increased pulmonary blood flow and long course of nebulized inhalation of nitroglycerin on the relaxation activity of rat′s pulmonary arteries;