Frais M A, Bayley T J
Postgrad Med J. 1979 Sep;55(646):567-8. doi: 10.1136/pgmj.55.646.567.
A patient treated for hypertension with labetalol developed left ventricular failure. When the drug was withdrawn and the BP controlled with 2 other agents, the signs of heart failure regressed. The ill effects in this case could have been because the beta-blocking effects of labetalol are 4 to 6 times greater than the alpha-blocking effects. Caution should be exercised when prescribing this drug for patients with heart failure or with previous symptoms.
一名使用拉贝洛尔治疗高血压的患者出现了左心室衰竭。当停用该药物并用其他两种药物控制血压时,心力衰竭的症状消退。该病例中的不良影响可能是因为拉贝洛尔的β受体阻滞作用比α受体阻滞作用大4至6倍。为心力衰竭患者或有既往症状的患者开此药时应谨慎。