肺源性心脏病病人在接受常规剂量的洋地黄治疗时,较易引起心律紊乱;而在用较小剂量治疗时,疗效又不确实,由于这个原因,使用强心甙治疗肺心病心力衰竭(特别是急性心力衰竭),就较其它心脏病者复杂。有人从动物实验证明,低氧血症能降低心肌对洋地黄的耐受性,并推测低氧血症是导致慢性肺部疾患病人对洋地黄敏感性增高的主要因素。 Pulmonary heart disease patients receiving conventional doses of digitalis treatment more likely to cause heart rhythm disorders; and in the treatment of smaller doses, the effect is not accurate, for this reason, the use of cardiac glycosides in the treatment of heart failure of pulmonary heart disease Especially acute heart failure), is more complicated than other heart disease. Some animal experiments show that hypoxemia can reduce myocardial tolerance to digitalis, and speculated that hypoxemia is the leading cause of chronic lung disease patients increased sensitivity to digitalis major factors.