Key result
Acute pulmonary hypertension induced by hypoxia, embolism, and constriction maintained optimal ventricular-arterial coupling across species as right ventricular contractility matched afterload.
Why the study?
How is right ventricular adaptation to acute pulmonary hypertension preserved across species with varying pulmonary vascular resistance?
Population
Anesthetized dogs (n=10), goats (n=8), and pigs (n=8)
Comparison
Acute pulmonary hypertension induced by hypoxia… vs Interspecies comparison and comparison across…
Design
Preclinical
Follow-up
Acute
Authors
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Caution against direct extrapolation to patients; extends cross-species evidence on RV adaptation mechanisms.
How is right ventricular adaptation to acute pulmonary hypertension preserved across species with varying pulmonary vascular resistance?
Optimal right ventricular-arterial coupling is maintained during acute pulmonary hypertension across different species, regardless of baseline pulmonary vascular resistance.
Wauthy et al. (2004) studied Acute pulmonary hypertension (n=26). Hypoxia, distal embolism, and proximal constriction vs. Interspecies comparison was evaluated on Right ventricular adaptation (ventricular-arterial coupling efficiency, contractility, afterload). Acute pulmonary hypertension induced by hypoxia, embolism, and constriction maintained optimal ventricular-arterial coupling across species as right ventricular contractility matched afterload.
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