Key result
The Valsalva manoeuvre revealed impaired vasoconstriction, indicated by a ≥20% fall in pulse pressure without a diastolic rise, in 18 of 22 patients with acute myocardial infarction.
Why the study?
Does the Valsalva manoeuvre reveal impaired circulatory reflexes in patients with acute myocardial infarction?
Population
22 patients with acute myocardial infarction
Design
Case_series
Authors
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Impaired vasoconstrictor response to Valsalva in acute MI suggests autonomic dysfunction; leaves open prognostic value and mechanisms.
Observational (n=22)
Does the Valsalva manoeuvre reveal impaired circulatory reflexes in patients with acute myocardial infarction?
Patients with acute myocardial infarction frequently exhibit impaired vasoconstriction during the Valsalva manoeuvre, which may explain rapid deterioration during transport or arrhythmias.
B. J. Kirby (1977) conducted an observational in Acute myocardial infarction (n=22). Valsalva manoeuvre was evaluated on Circulatory reflex response to the Valsalva manoeuvre. The Valsalva manoeuvre revealed impaired vasoconstriction, indicated by a ≥20% fall in pulse pressure without a diastolic rise, in 18 of 22 patients with acute myocardial infarction.
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