Emergency doctors refer to the area from the clavicle to the xiphoid process at the bottom of the sternum the "cardiac box." Injuries to this area require prompt medical attention, and pericardial tamponade is no exception. Also called cardiac tamponade, this event occurs when the heart is squeezed by uncontrolled fluid build-up in the pericardial sac.


1. Types of Pericardial Tamponade

There are two types of tamponade: acute and subacute. The former occurs when between 3.4 and 6.8 ounces of fluid accumulate rapidly. With subacute or chronic pericardial tamponade, the sac slowly accumulates as much as eight cups of fluid over a longer period. While speed and volume are important factors to gauge the development of this condition, the stiffer the pericardium muscle, the less fluid needed to induce cardiac tamponade.

Pericardial tamponade subacute acute chronic rustycloud / Getty Images

More on Facty Health


This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.