Respiratory Physiology

Airway Clearance Techniques – Physiological Basis

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Airway Clearance Techniques - Physiological Basis

References 1. Lapin CD. Airway physiology, autogenic drainage, and active cycle of breathing. Respir Care. 2002 Jul;47(7):778-85. PMID: 12088548. 2. McCool FD. Global physiology and pathophysiology of cough: ACCP evidence-based clinical practice guidelines. Chest. 2006 Jan;129(1 Suppl):48S-53S. doi: 10.1378/chest.129.1_suppl.48S. PMID: 16428691. 3. Hess DR. Airway clearance: physiology, pharmacology, techniques, and practice. Respir Care. 2007 Oct;52(10):1392-6. … Read more

Can Sputum Drain Itself?

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Can Sputum Drain Itself?

Cough cough cough…….. I have taken various expectorants, is there any non-drug method to assist in sputum clearance? Of course, in addition to the active breathing cycle technique introduced last time, sputum can also be “autogenously drained”. Autogenic drainage (AD) is a airway clearance technique that utilizes different lung volumes for breathing to facilitate the … Read more

Queen’s Lung Function: Assessment and Evaluation

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The lung’s diffusion function is one of the most challenging physiological indicators to grasp!! First, we need to avoid the influence of lung ventilation, (See details in “Evaluation of Lung Ventilation Function“) We also need to avoid the influence of pulmonary blood flow, (See details in “Pulmonary Hypertension” and “Pulmonary Embolism” ) Finally, we must … Read more