Lung ventilation

Lung ventilation, or pulmonary ventilation, is the physiological process of air exchange between the environment and the lung alveoli, essential for oxygen uptake and carbon dioxide removal (StatPearls, NBK482414). It is driven by pressure gradients created by the contraction and relaxation of respiratory muscles, primarily the diaphragm and intercostal muscles, under the control of the autonomic nervous system (NIH SEER Training). Although lung ventilation is a physiological process rather than a specific molecular target, it is the primary functional outcome measured in the treatment of respiratory diseases. Pharmacological intervention typically targets specific receptors, such as beta-2 adrenergic or muscarinic receptors, to alter airway caliber and improve airflow (PubMed, PMC4517537). Clinical management of ventilation is crucial in conditions like asthma, COPD, and acute respiratory failure, where mechanical or pharmacological support may be required to maintain life-sustaining gas exchange. Drugs like albuterol act as bronchodilators to increase ventilation, while others like opioids can cause dangerous respiratory depression. Monitoring ventilation involves measuring parameters such as tidal volume and respiratory rate to ensure adequate gas exchange. In critical care, mechanical ventilation is used to assist or replace spontaneous breathing when the patient's own ventilatory capacity is insufficient.

Other names

Pulmonary ventilationBreathingExternal respirationMinute ventilationTidal breathing

Modulation of airway resistance via bronchodilation, alteration of central respiratory drive in the medulla, or mechanical assistance of gas exchange.