Key result
Bed rest improves hemodynamics substantially, while prazosin shows only transient effects lost by 6 weeks.
Why the study?
The beneficial effects of vasodilators in congestive heart failure may be confounded by the effects of concomitant bed rest during patient monitoring.
Observational (n=12)
Answers are grounded in this paper and cite their sources.
Bed rest drove hemodynamic gains in CHF exceeding prazosin effects, which waned by 6 weeks; leaves open vasodilator efficacy pending controlled trials.
Twelve patients with congestive heart failure were monitored with invasive and noninvasive techniques to evaluate the effect of vasodilator treatment. During the 18 hours of strict bed rest before administration of prazosin, the hemodynamics improved substantially while only small and transient heModynamic changes were observed after introduction of prazosin. At 6 weeks' control the effect of vasodilator treatment with prazosin, 3 mg x 4, was lost. The beneficial results often credited to vasodilators in studies on congestive heart failure might in part be due to the concomitant bed rest introduced during the monitoring of the patients.
No takes yet. Share an insight, caveat, or question.
Thaulow et al. (1982) conducted an observational in Congestive heart failure (n=12). Prazosin vs. Strict bed rest (pre-administration baseline) was evaluated on Hemodynamic changes. Prazosin (3 mg x 4) yielded only small, transient hemodynamic changes lost at 6 weeks, whereas 18 hours of strict bed rest alone provided substantial hemodynamic improvements.
Synapse has enriched 10 related papers. Consider them for comparative context: