How to use "pulse" in a sentence

Two uniformed security men were performing first aid on the unconscious man, loosening his tie and collar, taking his pulse, while a third guard was keeping curious customers out of the way.

Elliot checked his pulse and pulled back one of his eyelids

Willis Bruckster quickly knelt at Michael Evans's side and took his pulse as if he expected to find one

The guard tried to find a pulse but wasn't able to do so

The corners curled and uncurled, curled and uncurled, again and again, like the pulse of a living thing.

The victim simply ceases to have a pulse, functioning organs, or any urge to breathe."