A nurse is providing care for a patient in the emergency department who has been preliminarily diagnosed with a transient ischemic attack (TIA). Which diagnostic test should the nurse expect the healthcare provider to order?
Computerized Tomography Angiography (CTA)
Transesophageal Echocardiogram (TEE)
Complete Blood Count (CBC)
Prothrombin Time (PT) .
The Correct Answer is A
Choice A rationale
A Computerized Tomography Angiography (CTA) scan is often used to diagnose a Transient Ischemic Attack (TIA). This imaging test can provide detailed images of blood vessels in the brain and neck, allowing healthcare providers to identify blockages or other abnormalities that could have caused the TIA12.
Choice B rationale
A Transesophageal Echocardiogram (TEE) is a type of echocardiogram that uses a probe passed down the esophagus to obtain detailed images of the heart. While it can be useful in diagnosing certain heart conditions, it is not typically the first-line diagnostic test for a TIA12.
Choice C rationale
A Complete Blood Count (CBC) is a blood test that measures different components of the blood, including red and white blood cells and platelets. While it can provide useful information about a person’s overall health, it is not typically used to diagnose a TIA12.
Choice D rationale
Prothrombin Time (PT) is a blood test that measures how long it takes for your blood to clot. While it can provide information about clotting disorders, it is not typically used to diagnose a
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Related Questions
Correct Answer is D
Explanation
Choice A rationale
Regulation of the amount of carbon dioxide exhaled can affect cerebral blood flow, but it does not directly maintain cerebral perfusion pressure constant.
Choice B rationale
Catecholamines circulating throughout the body can affect blood pressure and heart rate, but they do not directly maintain cerebral perfusion pressure constant.
Choice C rationale
How much blood is pumped from the heart, also known as cardiac output, can affect cerebral perfusion pressure. However, it does not directly maintain cerebral perfusion pressure constant.
Choice D rationale
Regulation of constriction and dilation of blood vessels in the brain, also known as cerebral autoregulation, is a key mechanism that maintains cerebral perfusion pressure constant. When pressure autoregulation is impaired, cerebral blood flow becomes dependent on cerebral perfusion pressure.
Correct Answer is B
Explanation
Choice A rationale
Serotonin is indeed an inhibitory neurotransmitter. It helps regulate mood, appetite, and sleep among other things. However, its role in the nervous system is complex and it can also have excitatory effects depending on the specific receptors and neural pathways involved.
Choice B rationale
Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the brain. It works by decreasing neuronal excitability, which helps to regulate muscle tone, among other functions.
Choice C rationale
Acetylcholine is primarily an excitatory neurotransmitter, although it can have inhibitory effects in certain parts of the nervous system. It plays a key role in muscle activation, learning, and memory.
Choice D rationale
Dopamine can act as both an inhibitory and an excitatory neurotransmitter, depending on the type of receptor it binds to and the specific neural pathway involved. It plays key roles in reward, motivation, and motor control.
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