Condition that occurs when a blockage of the main bloodstream interferes with tissue perfusion; possible causes include compression vena cava, pericardial tamponade, and pulmonary embolism.
Circulatory collapse caused by conditions that block the flow of blood into or out of the heart, such as cardiac tamponade, cardiac tumors, massive pulmonary embolism, or tension pneumothorax. Obstructive shock is characterized by very low cardiac output and increased systemic vascular resistance.