Key result
Median MSNA burst amplitude increased with CHF severity (43% mild/moderate, 52% severe) vs controls (36%), but was normal in pituitary deficiency (37%) despite increased burst frequency.
Why the study?
Does MSNA burst amplitude distribution better reflect muscle vasoconstrictor fiber activity and discriminate between conditions with increased burst frequency compared to burst frequency alone in patients with CHF?
Cross-Sectional (n=131)
Does MSNA burst amplitude distribution better reflect muscle vasoconstrictor fiber activity and discriminate between conditions with increased burst frequency compared to burst frequency alone in patients with CHF?
No takes yet. Share an insight, caveat, or question.
MSNA burst amplitude may better discriminate sympathetic drive in CHF than frequency; leaves open prospective validation before clinical use.
Sverrisdóttir et al. (2000) conducted a cross-sectional in Congestive heart failure, pituitary deficiency (n=131). Congestive heart failure and pituitary deficiency vs. Healthy controls was evaluated on Median MSNA burst amplitude. Median MSNA burst amplitude increased with CHF severity (43% mild/moderate, 52% severe) vs controls (36%), but was normal in pituitary deficiency (37%) despite increased burst frequency.
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