What is the procedure called that involves removing cerebrospinal fluid by puncturing the lower back for diagnostic tests?

What is the procedure called that involves removing cerebrospinal fluid by puncturing the lower back for diagnostic tests?

• A. Respiratory system
• B. Nasal mucous membrane
• C. Lumbar puncture
• D. Sinus cavities

Answer: (C)

The main idea is a diagnostic procedure to access cerebrospinal fluid by puncturing the lower back, which is called a lumbar puncture. In this procedure, a sterile needle is inserted into the lower back to reach the subarachnoid space and collect CSF for analysis (to check for infections like meningitis, bleeding around the brain, or inflammatory conditions) or to measure opening pressure or administer meds. It’s usually done with the patient in a side-lying or seated position using sterile technique, targeting the space between lumbar vertebrae, commonly L3–L4 or L4–L5. After the sample is taken, patients are often kept flat for a period to reduce the risk of a post-dural puncture headache and monitored for complications. Other options listed describe parts of the respiratory system or facial structures, which are not involved in sampling CSF, so they don’t fit this procedure.

The main idea is a diagnostic procedure to access cerebrospinal fluid by puncturing the lower back, which is called a lumbar puncture. In this procedure, a sterile needle is inserted into the lower back to reach the subarachnoid space and collect CSF for analysis (to check for infections like meningitis, bleeding around the brain, or inflammatory conditions) or to measure opening pressure or administer meds. It’s usually done with the patient in a side-lying or seated position using sterile technique, targeting the space between lumbar vertebrae, commonly L3–L4 or L4–L5. After the sample is taken, patients are often kept flat for a period to reduce the risk of a post-dural puncture headache and monitored for complications. Other options listed describe parts of the respiratory system or facial structures, which are not involved in sampling CSF, so they don’t fit this procedure.