What is the definition of atelectasis?

Atelectasis refers specifically to the collapse of alveoli, which are the tiny air sacs in the lungs where gas exchange occurs. When alveoli are collapsed, they can no longer participate effectively in the exchange of oxygen and carbon dioxide, leading to reduced oxygen levels in the bloodstream and potentially causing respiratory issues. This condition can occur for various reasons such as blockage of airways, pressure on the lungs from outside the chest cavity, or improper ventilation.

Understanding atelectasis is crucial for medical professionals, particularly in emergency and paramedic settings, as it can significantly impact a patient's respiratory status. Identifying its causes and ensuring proper treatment, such as encouraging deep breathing, repositioning, or in some cases, administering supplemental oxygen, is essential in comprehensive patient care.