Broncho Alveolar Lavage for Bacterial C/S (Aerobic) e Gram Stain

Specimen Required

Broncho Alveolar

Fasting Required

Purpose of the Test

Bronchoalveolar lavage (BAL) for bacterial culture and sensitivity (C/S) with Gram stain is a diagnostic test used to identify bacterial infections in the lungs.

When this test is required

BAL C/S and Gram stain may be requested when a patient has symptoms of a respiratory infection, such as cough, shortness of breath, fever, and chest pain. It may also be ordered when other diagnostic tests, such as chest X-rays, suggest the presence of a lung infection.

What the Test Detects

Bronchoalveolar lavage (BAL) for bacterial culture and sensitivity (C/S) and Gram stain is a diagnostic test used to identify and evaluate bacterial lung infections. The test involves washing the bronchoalveolar space in the lungs with a saline solution and then collecting the fluid for laboratory analysis.

Preparation for the Test

There is typically no special preparation needed for a BAL procedure. However, patients may need to fast for a few hours before the procedure if they will be under sedation or general anesthesia. In summary, a BAL for bacterial culture and sensitivity with Gram stain is performed to diagnose bacterial respiratory infections, particularly in patients with weakened immune systems or those who have not responded to initial antibiotic therapy. The sample is obtained via a bronchoscope inserted through the mouth or nose, and there is typically no special preparation required for the procedure.

Sample Requirements

A BAL sample is obtained by inserting a bronchoscope, a flexible tube with a camera, through the mouth or nose and into the lungs. A small amount of sterile saline solution is then injected into a specific area of the lung, and the fluid is suctioned back out into a collection container. This fluid is then sent to the laboratory for culture and sensitivity testing.

Additional Notes

It is important to note that the BAL C/S and Gram stain is not always necessary for the diagnosis of a respiratory infection. The test may be reserved for cases where other diagnostic methods have failed to provide a clear diagnosis or when a more accurate identification of the bacterial species is needed for optimal treatment.

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