心脏体格检查视诊英文版General Considerationn n During lifetime, the heart contracts more than 4 billion times.n n Pumping 200 million L blood to systemic circulation.n n Cardiac output varies under physiologic conditions from 3 to 30L/min. Heart rate varies from 60 to 150 beats/min. 2Physical Examination of Cardiovascular Physical Examination of Cardiovascular systemsystem In the present era of technological advances, particularly in the various i magi n g mo dal i ti es, physical examination of the heart