DEFINITION HEART FAILURE the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement of the metabolizing tissues or can do so only from an elevated filling pI ressure Usually caused by a defect in myocardial contraction(myocardial failure2 DEFINITION • HEART FAILURE – the pathophysiological state in which the heart is unable to pump blood at a rate commensurate with the requirement of the metabolizing tissues or can do so only from an elevated filling pressure. – Usually caused by a defect in myocardial contraction (myocardial failure)