Final answer:
To evaluate a patient with a suspected SAH, the first step is a non-contrast CT scan of the brain, followed by a lumbar puncture if the CT scan is inconclusive. Swift treatment is crucial for stroke recovery.
Step-by-step explanation:
The first step in the evaluation of a patient with a suspected Subarachnoid Hemorrhage (SAH) is to perform a non-contrast Computed Tomography (CT) scan of the brain. This rapid imaging technique is crucial for detecting the presence of blood in the subarachnoid space. If the CT scan is negative but clinical suspicion remains high for SAH, a lumbar puncture (LP) should be conducted to examine the cerebrospinal fluid (CSF) for xanthochromia and red blood cells. This diagnostic approach should be performed promptly, as recovery from a stroke or a TIA is strongly dependent on the speed of treatment. Additionally, utilizing the FAST mnemonic can be helpful for identifying stroke symptoms: Facial drooping, Arm weakness, Speech difficulties, and Time to call for emergency services.