Here’s an interesting set of ECGs sent to us by Frank Intessimoni of Atlanticare EMS. You can follow Frank on Twitter: @njmedic3228.

EMS is called to a local nursing home for a 100 year old female patient who had been complaining of rib pain and intermittent spasms for 3 days.

Vital signs were assessed.

RR: 14

Pulse: 80

NIBP: 138/68

Temp: 98.8

SpO2: 97% on room air

A 12-lead ECG was recorded.

A minute later a change was noted on the monitor and another 12-lead ECG was obtained.

About 30 seconds later the abnormality resolved.

The patient was discharged the same day from the emergency department.

What could account for these unusual looking T-waves?