Bennet D, Balcon R, Hoy J, Sowton E
Thorax. 1970 Jan;25(1):86-8. doi: 10.1136/thx.25.1.86.
Intravenous injections of 20-25 mg. d-propranolol did not change the heart rate or systemic pressure in 13 patients with cardiac infarction. Cardiac output was depressed in 10, but there was no clinical deterioration. d-Propranolol was better tolerated than dl-propranolol under these conditions and justifies further investigation as an anti-dysrhythmic agent. The major depressant effects of dl-propranolol following cardiac infarction appear to be due to beta-adrenergic blockade and not to a direct depressant action on cardiac muscle.
对13例心肌梗死患者静脉注射20 - 25毫克d-普萘洛尔,未改变其心率或体循环压力。10例患者的心输出量降低,但无临床病情恶化。在这些情况下,d-普萘洛尔比dl-普萘洛尔耐受性更好,有理由作为抗心律失常药物作进一步研究。dl-普萘洛尔在心肌梗死后的主要抑制作用似乎是由于β-肾上腺素能阻滞,而非对心肌的直接抑制作用。