Scroll down to see the questions

This is a routine preoperative ECG taken on a 66 year old woman scheduled for cataract surgery. She denies all cardiovascular symptoms.

Vent. rate 84 bpm
PR interval 180 ms
QRS duration 74 ms
QT/QTc 354/418 ms
P-R-T axes 58 34 22

Questions For Thought

1. Does her ECG suggest that she has had a "silent" inferior myocardial infarct?
2. Should she have further evaluation, eg: a stress thallium study, prior to operation?

Answers available here