A) Enlarged P-wave-Acute myocardial infarction
B) QRS wave flat-Atherosclerotic heart disease
C) Enlarged Q and R-wave-Myocardial infarction
D) Elevated S-T-Enlargement of atria
Correct Answer: C
Solution :
Enlarged Q and R-waves indicated a myocardial infarction. The S-T segment is elevated in acute myocardial infarction and depressed when the heart muscle receives insufficient oxygen. Enlargement of the P-wave indicates enlargement of the atria. T-wave is flat when the heart muscles receive insufficient oxygen is in atherosclerotic heart disease.
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