Bronchoalveolar lavage ( Ã, ( listen ) ) (BAL: informal, "bronchoalveolar washing") is a medical procedure in which the bronchoscope is passed through the mouth or nose to the lungs and the liquid is sprayed into a small portion of the lung and then collected for examination. Usually performed to diagnose lung disease.
In particular, bronchoalveolar lavage is commonly used to diagnose infections in people with immune system problems, pneumonia in people in the ventilator, some types of lung cancer, and lung scarring (interstitial lung disease). This is the most commonly used method for epithelial fluid sample samples (ELF) and for determining the protein composition of the lung airway. It is often used in immunological studies as a means of sampling cells (eg, T cells) or pathogen levels (eg, influenza viruses) in the lungs.
BAL has been used for therapeutic applications. The entire lavage lung (WLL: informal, "pulmonary wash") is a treatment for alveolar pulmonary proteinosis.
Video Bronchoalveolar lavage
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