作者: J.E. Cotes
DOI: 10.1016/0007-0971(72)90027-7
关键词: Shunt (medical) 、 Lung 、 Heart rate 、 Respiratory rate 、 Tidal volume 、 Cardiology 、 Surgery 、 Medicine 、 Internal medicine 、 Spirometry 、 Shunting 、 Cardiac output
摘要: AN increase above normal in the ventilatory response to exercise (hyperpnoea) is a feature of patients whose breathlessness due one several abnormalities function heart or lung. These include transfer defect, restricted cardiac output and shunting blood past gas exchanging regions lung (pulmonary shunt) causing hypoxaemia. In some these conditions breathing frequency relative tidal volume increased (tachypnoea),