If an organ or other part inside the body is strangulated, it has become tightly pressed, blocking the flow of blood or air through it.

a strangulated hernia 绞窄性疝

A strangulated sound is not full or relaxed, but made when your throat is tight, for example because of fear or anger.

He let out a strangulated squeak of outrage. 他发出一声愤怒的低吼。