Key result
Intravenous propranolol and verapamil did not alter LV diastolic stiffness in HCM patients, but verapamil significantly improved LV relaxation (T decreased from 53 to 43 ms, P<0.05).
Why the study?
Do propranolol and verapamil improve LV diastolic stiffness, relaxation, and filling in patients with hypertrophic cardiomyopathy?
Do propranolol and verapamil improve LV diastolic stiffness, relaxation, and filling in patients with hypertrophic cardiomyopathy?
In patients with hypertrophic cardiomyopathy, verapamil improves LV relaxation and diastolic filling, whereas propranolol impairs them, though neither drug alters passive LV diastolic stiffness.
No takes yet. Share an insight, caveat, or question.
Should not yet change HCM practice; extends relaxation observations but leaves stiffness effects and outcomes open.
Hess et al. (1983) studied Hypertrophic cardiomyopathy (n=15). Propranolol and Verapamil vs. Baseline (before administration) was evaluated on LV diastolic stiffness. Intravenous propranolol and verapamil did not alter LV diastolic stiffness in HCM patients, but verapamil significantly improved LV relaxation (T decreased from 53 to 43 ms, P<0.05).
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