noun, Physiology. 1. an instrument, often attached to an inflatable air-bladder cuff and used with a stethoscope, for measuring blood pressure in an artery. He who worships his sphygmomanometer as a thing apart and infallible will sooner or later come to grief.
Pericarditis is an inflammation of the tissue layers surrounding the heart. The chest pain of pericarditis is usually sharp and stabbing. It can radiate to the back, neck, or arm. The pain may worsen when taking a deep breath or lying flat and lessen when leaning forward.
You may become short of breath, start breathing faster than normal and develop a tight chest. A sharp pain in the side of the chest may develop if the infection involves the pleura. The pleura is the membrane between the lung and the chest wall. A doctor may hear crackles when listening to your chest with a stethoscope.