Type 2 Myocardial Infarction- A Case Report | Chapter 12 | Current Trends in Disease and Health Vol. 2
Type 2 MI (T2MI) was defined as
myocardial infarction other than due to coronary artery disease (CAD), produced
by disparity between supply and demand of oxygen .Cases were reported in
literature where T2 MI was diagnosed even in presence of 90% block in coronaries,
where recent ischemic changes were shown to be not due to the CAD, but to
disparity between supply and demand of oxygen. There was considerable overlap
with the classical type 1 NSTE MI and T2 MI. Distinguishing between the two was
considered challenging. Though T2 MI constituted about 25% of all cases of MI,
the centres reporting Type 2 MI ranged between 0-13% only. Type 2 MI, the new
heterogeneous group, was officially recognised by the task force on the
universal definition of MI in 2007. The scope and criteria were changing since
it was defined in 2007. Further, it appeared that -coronary cause of MI was
more important than disparity between supply and demand of myocardial oxygen
supply. For instance Sepsis, one of the important causes of T2 MI, could cause
Type 2 MI by myocardial depression even in presence of normal oxygen perfusion.
A case diagnosed initially as NSTEMI, was retrospectively considered the possibility of T2MI. The reasons there of and the intricacies in the diagnosis of T2 MI are discussed in this article.
Author(s) Details
Dr. A. S. V. Prasad
Department of Internal
Medicine, G.I.T.A.M Dental Collage, Rishikonda, Visakhapatnam, Pin Code –
530045, Andhra Pradesh, India.
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