Rat heart‐lung preparation: Standardization of work performance; lung weights

Abstract
The preparation of an isolated rat heart‐lung is described in detail. This isolated system exhibits a high degree of uniformity of work performance as measured by left ventricular work index (LVWI) (proportional to the product of cardiac output and mean arterial blood pressure). The procedures described are of considerable importance to studies of the tissue‐level activity of corticosteroids.

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