ECG

Question 1

STEMI/NSTEMI + bradycardia indicates

Answer 1

The Bezold-Jarisch reflex - inhibitory reflex of bradycardia, vasodilation, and hypotension resulting from stimulation of cardiac receptors.

Question 2

When may the BJR occur?

Answer 2

In acute inferoposterior myocardial infarction

Question 3

Function of the Bezold-Jarisch reflex

Answer 3

Thought that the cardiodepressor Bezold-Jarisch reflex (BJR) acts as a protective reflex to vasodilate the coronary arteries in the setting of inferoposterior infarction associated with coronary vasospasm.

Question 4

Subtle sign of inferior STEMI

Answer 4

ST depression in aVL

aVL is the only lead truly reciprocal to the inferior wall, as it is the only lead facing the superior part of the ventricle.

91% of “subtle” inferior STEMIs that do not meet STEMI criteria but show occlusion on PCI demonstrate ST depression in aVL

Question 5

Leads for lateral MI

Answer 5

V5, V6, aVL, I

Question 6

Leads for anterior MI

Answer 6

V3, V4

Question 7

Leads for septal MI

Answer 7

V1, V2

Question 8

Leads for inferior MI

Answer 8

II, III, aVF