He rolled over, breathless, fighting to force air back into his lungs.

The process is fairly simple, essentially squeezing a bag to force air into a patient's lungs.

He forced enough air into his lungs to scream.

But he was too busy trying to force a breath into his lungs, which burned with pain, and felt as if they'd collapsed.

Actually, it wasn't so much a comment as a noise I made while trying to force some air into my lungs.

Finally, after long seconds of struggle, the doctor was able to force air back into his straining lungs.

Lenardo took up the task of forcing air into the man's lungs.

But he could barely force air into his lungs.

Suddenly, I couldn't force enough air into my lungs.

He tried to force some air into his collapsing lungs.