Reperfusion injury natural history: Difference between revisions
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{{Reperfusion injury}} | {{Reperfusion injury}} | ||
'''Editors-In-Chief:''' {{AC}}; [[C. Michael Gibson]], M.S., M.D. [mailto:Mgibson@perfuse.org]; [[User:Shivam Singla|Dr. Shivam Singla M.D. [ | '''Editors-In-Chief:''' {{AC}}; [[C. Michael Gibson]], M.S., M.D. [mailto:Mgibson@perfuse.org]; [[User:Shivam Singla|Dr. Shivam Singla M.D. [2]]] '''Associate Editors-In-Chief: '''[[User:Kashish Goel|Kashish Goel, M.D ;]] | ||
==Overview== | ==Overview== | ||
[[Reperfusion injury]] may be responsible for about 50% of the total infarct size after an acute [[myocardial infarction]] as well as [[myocardial stunning]], [[congestive heart failure]] and [[reperfusion arrhythmias]] such as [[ventricular arrhythmias]]. | [[Reperfusion injury]] may be responsible for about 50% of the total infarct size after an acute [[myocardial infarction]] as well as [[myocardial stunning]], [[congestive heart failure]] and [[reperfusion arrhythmias]] such as [[ventricular arrhythmias]]. | ||
Revision as of 02:41, 13 August 2020
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Editors-In-Chief: Anjan K. Chakrabarti, M.D. [1]; C. Michael Gibson, M.S., M.D. [2]; Dr. Shivam Singla M.D. [2] Associate Editors-In-Chief: Kashish Goel, M.D ;
Overview
Reperfusion injury may be responsible for about 50% of the total infarct size after an acute myocardial infarction as well as myocardial stunning, congestive heart failure and reperfusion arrhythmias such as ventricular arrhythmias.
Complications
- Myocardial stunning: Delayed recovery, usually 2-3 days, of the viable myocardium after reperfusion is termed as "myocardial stunning". It is mainly due to the release of reactive oxygen species and intracellular calcium overload.
- Myocardial infarction: Irreversible myocyte cell death secondary to reduced oxygen delivery for more than 20-30 minutes, will lead to infarction. Reperfusion helps prevent complete loss of the involved area, however oxidative stress due to this may prevent complete resolution.
- Acute heart failure: Loss of myocardial contractility and systolic dysfunction associated with ischemia/reperfusion injury may lead to development of acute heart failure. Early reperfusion in the course of STEMI prevents myocardial necrosis and may lead to complete recovery of function.
- Ventricular arrhythmias: Reperfusion of the blocked coronary artery can also precipitate arrhythmias ranging from ventricular premature beats to life-threatening ventricular fibrillation.