![]() V/Q mismatch can happen in two main ways: Ventilation/perfusion (V/Q) mismatch describes disproportionate ventilation and blood flow in lung areas, impairing efficient gas exchange. Dead space is the volume of air not participating in gas exchange due to ventilation without perfusion. ![]() What is the Difference Between a Shunt, Dead Space, and V/Q Mismatch?Ī shunt refers to blood passing through the lungs without participating in gas exchange. Understanding these aspects is essential for appreciating the mechanisms underlying proper oxygenation and carbon dioxide removal in the body. This article provides an overview and explains these concepts, compares their characteristics and causes, and discusses their impact on respiratory health. The terms shunt, dead space, and ventilation/perfusion (V/Q) mismatch represent important concepts in pulmonary physiology, each indicating a distinct type of lung dysfunction that affects gas exchange. V/Q Mismatch: An Overview (2023)īy John Landry, BS, RRT | Updated: Jun 30, 2023 ![]()
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