Key result
Simulated duck dives induce profound bradycardia and elevate central pressures without altering systemic arterial pressure.
Population
Domestic ducks
Design
Preclinical
Authors
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Duck model reveals preserved arterial pressure amid bradycardia and venous hypertension; leaves open translation to human immersion physiology.
Simulated diving in ducks causes profound bradycardia and increased central venous pressure without significant changes in systemic arterial pressure, suggesting increased pulmonary and systemic vascular resistance.
Johansen et al. (1963) studied Submersion asphyxia. Simulated dives (submersion asphyxia) was evaluated on Central cardiovascular responses (heart rate, blood pressures, circulation time). Simulated dives in domestic ducks induced profound bradycardia, increased central venous and left ventricular diastolic pressures, and prolonged circulation time without changing systemic arterial pressure.
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