A nurse is caring for a client who has a subarachnoid hemorrhage and asks why they are having a CT angiography. Which of the following should the nurse understand about CT angiography?
A CT angiogram will reveal any edema within the brain tissue.
A CT angiogram will reveal any overproduction of cerebrospinal fluid (CSF).
A CT angiogram will reveal any fractures within the skull or spine.
A CT angiogram will reveal any decreased blood flow related to vasospasm.
The Correct Answer is D
A. A CT angiogram will reveal any edema within the brain tissue: CT angiography primarily focuses on visualizing blood vessels and blood flow within the brain. While it may incidentally detect areas of edema, its primary purpose is to assess vascular structures rather than brain tissue changes such as edema.
B. A CT angiogram will reveal any overproduction of cerebrospinal fluid (CSF): CT angiography does not assess cerebrospinal fluid (CSF) production. Its main function is to visualize blood vessels and blood flow within the brain, particularly to detect abnormalities such as aneurysms, arteriovenous malformations, or vasospasm.
C. A CT angiogram will reveal any fractures within the skull or spine: CT angiography primarily focuses on imaging blood vessels and is not the preferred modality for detecting fractures within the skull or spine. CT scans or plain radiography are typically used to assess bony structures for fractures.
D. A CT angiogram will reveal any decreased blood flow related to vasospasm: This statement is correct. CT angiography is a specialized imaging technique that combines computed tomography (CT) scanning with contrast dye to visualize blood vessels and blood flow within the brain. It is commonly used to detect and monitor vasospasm, a potentially serious complication of subarachnoid hemorrhage, where blood vessels in the brain constrict, leading to decreased blood flow. CT angiography allows for the visualization of these changes in blood vessel diameter and blood flow dynamics.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. "I need to walk slowly as I lose my balance often": This statement indicates a potential safety concern related to balance issues while walking. Loss of balance can increase the risk of falls, especially in individuals with peripheral artery disease (PAD) who may already have compromised circulation and reduced sensation in their legs. The nurse should report this statement to the provider for further evaluation and intervention to prevent falls and promote safety.
B. "I don't go out much because of the pain in my legs" : While this statement suggests that the client experiences pain in their legs, it does not directly indicate a safety concern that requires immediate reporting to the provider. Pain management strategies may be discussed with the provider to address this issue.
C. "It makes me sad that I can't keep up with my grandchildren" : While this statement reflects emotional distress related to the client's inability to participate fully in activities with their grandchildren, it does not indicate a specific safety concern that requires reporting to the provider. However, addressing the client's emotional well-being is important for overall holistic care.
D. "I have a small-healed area on my spine that is painful" : This statement describes a painful area on the client's spine but does not directly relate to potential safety concerns associated with PAD. The nurse may further assess this issue and include it in the client's overall assessment, but it does not require immediate reporting to the provider for safety concerns related to PAD.
Correct Answer is A
Explanation
A. Pooling of blood and edema around the eyes: Basilar skull fractures can lead to leakage of cerebrospinal fluid (CSF) into the surrounding tissues, resulting in periorbital ecchymosis, also known as raccoon eyes, due to pooling of blood and edema around the eyes. This finding is characteristic of basilar skull fractures and is caused by disruption of the meninges and subsequent CSF leakage into the soft tissues of the face.
B. Ability to recall how the injury occurred: Memory loss regarding the events surrounding the injury, known as post-traumatic amnesia, is common with basilar skull fractures. This amnesia occurs due to the impact of the injury on the brain and may involve retrograde amnesia (loss of memory of events leading up to the injury) and anterograde amnesia (loss of memory of events occurring after the injury).
C. Bruising over the mastoid process: Bruising over the mastoid process, known as Battle sign, is associated with basilar skull fractures. Battle sign results from blood accumulation (hematoma) in the mastoid region behind the ear due to fracture-related injury to the middle meningeal artery or other blood vessels. This finding typically develops 24-48 hours after the injury.
D. Chvostek’s sign: Chvostek's sign is a clinical manifestation of hypocalcemia, not basilar skull fractures. It is elicited by tapping the facial nerve (facial nerve spasm) and is indicative of neuromuscular irritability due to decreased calcium levels. Chvostek's sign is not directly related to basilar skull fractures.
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