Question

how can the doctor rapidly determine if there are bacteria present in the csf?
a) collect a few milliliters of csf and send it for a gram stain
b) treat the patient with antibiotics and await the response
c) send the csf sample for culture and antibiotic sensitivity testing
d) send the patient for a chest x - ray

Explanation:

Gram - stain is a rapid method to visualize bacteria. Culture and antibiotic sensitivity testing (option c) takes more time (usually 24 - 48 hours or more). Treating with antibiotics (option b) without knowing if bacteria are present is not appropriate as it can lead to antibiotic resistance and may not be necessary if the cause is non - bacterial. A chest X - ray (option d) is mainly used to assess the lungs and not a direct test for bacteria in cerebrospinal fluid (CSF).

Answer:

A. Collect a few milliliters of CSF and send it for a Gram stain