cardiac monitor
heart monitor

Jackson's partner came over with the drug box and the heart monitor.

It now looked as if the salmon had a heart monitor.

The doctor was seated at the far side of the bed, beside the heart monitor.

You can hear the soft blip of his heart monitor.

A heart monitor is attached so prison officials can determine when death has occurred.

Their eyes met and tracked together to the heart monitor.

She gave him the drug he needed, keeping close watch on his heart monitor.

He is now on a 24-hour suicide watch and required to wear a heart monitor.

The President is wearing a heart monitor and the doctors continue to watch his progress.

Over the sound of the heart monitor, she said, "It better sink in this time, right?"