Question

listen to or read the audio message on the left and then answer the question. what is a lumbar puncture? it is an ultrasound study of the carotid artery. it is the process of obtaining a sample of cerebrospinal fluid by inserting a needle into the subarachnoid space of the lumbar region to withdraw fluid. it causes the loss of sensation in a limited area by injecting an anesthetic solution near that area. it is the injection of medication into the subarachnoid space. incorrect: spinal anesthesia, also called a spinal block, is regional anesthesia produced by injecting medication into the subarachnoid space. spinal anesthesia provides numbness from the toes to the waist or lower chest. try again.

Explanation:

A lumbar puncture is a medical - diagnostic procedure where a needle is inserted into the subarachnoid space of the lumbar region to obtain a sample of cerebrospinal fluid. The first option refers to a carotid artery ultrasound, the third option describes local anesthesia, and the fourth option describes spinal anesthesia (injecting medication into the subarachnoid space).

Answer:

It is the process of obtaining a sample of cerebrospinal fluid by inserting a needle into the subarachnoid space of the lumbar region to withdraw fluid.