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Preservation of Right Ventricular Contractility After Transient Phenylephrine‐Induced Pressure Overload in Swine

We have previously demonstrated that a transient phenylephrine (PE)‐induced rise in systemic arterial blood pressure leads to reversible left ventricular (LV) systolic dysfunction in the absence of ischemia (i.e., “stretch‐induced stunning”). However, the extent to which this phenomenon occurs in the right ventricle (RV) is unclear. Accordingly, the present study was designed to assess changes in pulmonary artery (PA) pressure and RV function during and after systemic administration of PE in swine.