ACUTE CORONARY SYNDROME-ANTERIOR VS INFERIOR MI

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SUMMARY

ANTERIOR MI
1. VSD from septal rupture is seen more commonly with anterior and inferior Mls.

2. The amount of infarcted myocardium is typically larger with anterior Ml.

3. assoc. with unstable arrhythmias (Mobitz type 2, BBB); poor prognosis.

INFERIOR MI
4. MR due to papillary muscle dysfunction is more common with inferior Mls.
5. assoc. with stable arrhythmias (Mobitz type 1); better prognosis.

ANTERIOR & INFERIOR MIs
6. Arrhythmias in the first 48 hours are due to acute ischemia (or reperfusion-related) and do not imply a need for long-term anti-arrhythmic therapy.


Reference(s)

Wilkinson, I., Furmedge, D. and Sinharay, R. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press. Get it on Amazon.
Feather, A., Randall, D. and Waterhouse, M. (2020). Kumar And Clark’s Clinical Medicine. 10th ed. S.L.: Elsevier Health Sciences. Get it on Amazon.
Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
Therapeutic Guidelines. Melbourne: Therapeutic Guidelines Limited. https://www.tg.org.au [Accessed 2021].

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