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Related to myocardial stunning: Stunned myocardium
myocardial stunningA term of art for prolonged, nonpermanent, post-ischaemic, systolic and/or diastolic ventricular dysfunction without myocardial necrosis. In myocardial stunning (MS), the myocardium is viable and has contractile reserve. MS may follow successful thrombolytic therapy in evolving acute MI, percutaneous transluminal angioplasty, during exercise, and after relief of ischaemia caused by vasospasm.
Uncertain; MS has been attributed to oxidative stress, or to a transient increase in intracellular calcium.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
myocardial stunningStunning Cardiology Prolonged nonpermanent postischemic systolic and/or diastolic ventricular dysfunction without myocardial necrosis; MS may follow successful thrombolytic therapy in evolving MI, PCTA, during exercise, and after relief of ischemia caused by vasospasm. Cf Myocardial hibernation.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
my·o·car·di·al stun·ning(mīō-kahrdē-ăl stŭning)
Decreased myocardial contractility occuring in noninfarcted areas due to excess production of free radicals in infarcted areas.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
Myocardial stunningA reversible state of left ventricular dysfunction featuring chest pain, dyspnoea, ECG changes, and sometimes hypotension or heart failure requiring supportive measures. The condition may be precipitated by sudden severe emotional stress and in these cases the levels of catecholamines may be up to 30 times normal.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005