Certified Respiratory Therapist Practice Exam

Pulmonary embolism is defined as a blockage in a pulmonary artery, typically caused by blood clots. This condition usually occurs when a clot from another part of the body, often from the deep veins of the legs, travels through the bloodstream to the lungs, resulting in obstruction of blood flow. This can lead to serious complications, including reduced oxygen levels and damage to lung tissue, as well as potential strain on the heart due to increased pressure in the pulmonary arteries.

Understanding the mechanics of a pulmonary embolism is crucial, as the timely diagnosis and treatment of this condition can significantly impact patient outcomes. The primary initiating factor is the presence of the thrombus, and recognizing symptoms such as sudden shortness of breath, chest pain, or coughing up blood can lead to prompt medical intervention.