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pericardial sac

n. the membrane surrounding the heart

Usage examples of "pericardial sac".

Her aortic arch, pulmonary artery, heart, and pericardial sac were penetrated.

The surgery had been relatively easy as these things went: a bit of shrapnel had nicked the pericardium, and there had been bleeding into the pericardial sac with associated cardiac tamponade.

Under the smashed xiphoid, she saw the pulse of the bluish-brown pericardial sac, streaked with fat.

Knowing whether Martha's pericardial sac was filled with blood would not only assuage a medical curiosity, it might also give a hint as to how long she survived as she bled from other stab wounds.

Ruptures the heart, and the pericardial sac self-seals on the way out.

I'm going to fill the pericardial sac with water and insert a needle into the heart, again to see if any bubbles form.