Case 28 — ECGs

This ECG was taken before digital pressure was applied to the pulsatile swelling.

ECG before digital pressure was applied to the pulsatile swelling, showing normal heart rate.
ECG before digital pressure on the swelling.

The next ECG was taken during the time digital pressure was applied to the swelling. Enough pressure was applied so that the pulse could no longer be felt. Note that the heart rate slows.

ECG during digital pressure on the swelling showing reflex bradycardia (positive Branham's sign).
ECG during digital pressure on the swelling. Note the slower heart rate.

Quiz

1. What is this response called?

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