The ST segment depressions in leads II,III,and AVF in Figure 20 are
A)Indicative changes of the MI.
B)Reciprocal changes.
C)An indication of imminent extension of the MI.
D)Evidence of a new NSTEMI.

Question

The ST segment depressions in leads II,III,and AVF in Figure 20 are 
A)Indicative changes of the MI. 
B)Reciprocal changes. 
C)An indication of imminent extension of the MI. 
D)Evidence of a new NSTEMI.

Quizplus · Accepted Answer

ST segment depressions in leads II, III, and AVF are considered reciprocal changes of an inferior wall MI, which is most likely occurring in this patient. Reciprocal changes are typically seen in leads opposite the site of the MI and are caused by electrical forces shifting away from the affected area. The ST segment depressions alone do not necessarily indicate extension of the MI or evidence of a new NSTEMI.

The ST Segment Depressions in Leads II,III,and AVF in Figure