论文部分内容阅读
既往用心超声图研究证明,舌下含服硝酸甘油(NTG)后左心室舒张末期内径(Dd)及收缩末期内径(Ds)均较用药前减少,并认为此与前后负荷、心率及心肌收缩力改变等有关,但以何者为主尚不清楚。为此,作者对心率固定的起搏器植入组和心率变化的对照组,给予相同剂量的 NTG 后,用心超声图法测定左室内径及血液动力学变化,以研究舌下含服 NTG
Previous studies of echocardiography proved that left ventricular end-diastolic diameter (Dd) and end-systolic diameter (Ds) decreased after sublingual nitroglycerin (NTG) compared with before administration, and this was associated with anterior-posterior load, heart rate and myocardial contractility Change and so on, but it is unclear which one is the main one. To this end, the author of a steady heart rate pacemaker implantation group and the control group of heart rate changes, given the same dose of NTG, cardiac ultrasonography measured left ventricular diameter and hemodynamic changes to study sublingual NTG