ECG 9a. The ECG tracings above is from an old man.
It is his PRETEST ECG and no ST segment abnormality is seen.

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ECG 9b. The ECG above belongs to the same man.
It was recorded at the 3rd minute of his treadmill exercise test.
ST segment depression is seen in lead aVL and ST segment elevation is seen in lead aVR.

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ECG 9c. The ECG above belongs to the same man.
It was recorded at his peak exercise (4 minutes 9 seconds).
Now, lead III also starts to display mild ST segment elevation.

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ECG 9d. The ECG above belongs to the same man.
It was recorded 2 minutes after termination of his test (recovery phase)
ST segment depression in lead aVL is deeper and ST segment elevation in lead III is increased.
Lead V5 and V6 also display ST segment elevation.
Coronary angiography showed Left Main Coronary Artery disease with the additional involvement of 3 major coronary arteries.

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ECG 10a. The ECG above is from a 61 years-old woman with coronary artery disease.
It was recorded before treadmill exercise test. No ST segment abnormality is seen.

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ECG 10b. Above is her ECG which was recorded at the 3rd minute of her treadmill exercise test.
No ST segment abnormality is seen.

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ECG 10c. Above is her ECG which was recorded at the 6th minute of her treadmill exercise test.
Leads V4, V5 and V6 show ST segment depression.

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ECG 10d. Above is her ECG which was recorded at the 8th minute of her treadmill exercise test..

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ECG 10e. Above is her ECG which was recorded one minute after termination of the test.
ST segment depression persists.

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ECG 10f. Above is her ECG which was recorded three minutes after termination of the test.
ST segment depression and negative T waves are seen.

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ECG 10g. Above is her ECG which was recorded four minutes after termination of the test.
ST segment depression and negative T waves still persist.
Coronary angiography showed multiple significant stenoses in this patient.

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