Why the study?
Does digoxin improve myocardial contractility in isolated rat hearts under hypercapnic or hypoxic conditions?
Population
Isolated beating rat heart perfused at constant flow (37 °C) and stimulated at a constant frequency (6 Hz)
Comparison
Digoxin 1.75 × 10−5 M added to Tyrode's solution… vs Control hearts continuously perfused with…
Design
Preclinical
Authors
Loading...
Digoxin inotropy may be lost in hypoxia; hypothesis-generating for pulmonary patients and requires clinical validation.
Does digoxin improve myocardial contractility in isolated rat hearts under hypercapnic or hypoxic conditions?
In an isolated rat heart model, the inotropic effect of digoxin is enhanced by hypercapnia but abolished by hypoxia, providing mechanistic insight into digoxin therapy challenges in patients with chronic pulmonary diseases.
Allam et al. (1990) studied this question.
Synapse has enriched 2 closely related papers on similar clinical questions. Consider them for comparative context: