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Respiratory Therapist

Category - Patient Evaluations and Recommendations

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Patient would have myocardial ischemia when an ECG shows:

The QRS duration is prolonged
The T wave is inverted
The P wave is inverted
Artifact is present

Explanation

Answer: B - Inversion of the T wave indicates myocardial ischemia.

An incomplete bundle branch block may be indicated by a prolonged QRS wave. An inverted P wave could indicate dextrocardia, retrograde atrial depolarisation or lead displacement. If artifact is present; the reading will not be accurate, and leads should be verified to have proper placement.

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