Why the study?
Does acute administration of propranolol reduce systolic pressure in patients with isolated systolic hypertension across different age groups?
Does acute administration of propranolol reduce systolic pressure in patients with isolated systolic hypertension across different age groups?
Acute propranolol administration reduces systolic pressure in younger but not older patients with isolated systolic hypertension, likely due to unmasked alpha-adrenergic vasoconstriction reducing arterial compliance in older patients.
Answers are grounded in this paper and cite their sources.
Acute propranolol may reduce systolic pressure in younger but not older patients with isolated systolic hypertension; leaves open age-specific effects for prospective trials.
Hemodynamic variables were measured in 34 patients with isolated systolic hypertension before and after acute administration of propranolol. The patients were separated into two groups, those younger than and those older than 45 years of age, respectively. After drug administration, systolic pressure decreased significantly (P less than 0.001) in younger subjects with a concomitant increase in rapid ejection time (P less than 0.001). In the older patients, cardiac and peripheral factors determining systolic pressure were each altered after beta-adrenergic blockade. The most striking result was the reduction in systemic arterial compliance (P less than 0.01) probably due to unmasked alpha-adrenergic vasoconstriction. This arterial effect explains the lack of systolic pressure reduction despite a decrease in cardiac performance.
No takes yet. Share an insight, caveat, or question.
Levenson et al. (1983) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: