The nurse is providing care to a client who has survived cardiac arrest Which of the following manifestations should alert the nurse to the development of PCAS?
Decreased circulation to the kidneys
Increased mental capacity
Improving respiratory function
Improvement in heart rate and blood pressure
The Correct Answer is A
A. Decreased circulation to the kidneys: Post-cardiac arrest syndrome (PCAS) is a constellation of systemic ischemia/reperfusion injury responses that occur after return of spontaneous circulation (ROSC) following cardiac arrest. One of the manifestations of PCAS is decreased circulation to the kidneys due to the systemic hypoperfusion that occurs during cardiac arrest and the subsequent reperfusion injury that follows ROSC. This can lead to acute kidney injury (AKI) in some cases.
B. Increased mental capacity: While it is crucial to monitor neurological status after cardiac arrest, an immediate increase in mental capacity is not typically indicative of PCAS. Rather, neurological assessment may involve evaluating for signs of brain injury or dysfunction, which can include altered mental status, confusion, or neurological deficits.
C. Improving respiratory function: Improvement in respiratory function after cardiac arrest is a positive sign but may not necessarily indicate the development of PCAS. PCAS primarily involves systemic responses to the ischemia/reperfusion injury that occurs during and after cardiac arrest, rather than isolated respiratory changes.
D. Improvement in heart rate and blood pressure: Improvement in heart rate and blood pressure after cardiac arrest is generally expected with successful resuscitation efforts. However, these improvements alone may not necessarily indicate the development of PCAS. PCAS involves a broader range of systemic responses beyond just cardiac and hemodynamic changes.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
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.
Correct Answer is D
Explanation
A) "Damage occurs from the penetrating object shattering the skull and causing an infection." While penetrating traumatic brain injuries can lead to skull fractures and subsequent infections, the primary mechanism of brain damage in these injuries is related to the direct impact of the penetrating object on brain tissue rather than the shattering of the skull.
B) "Damage to the brain is related to coup and contrecoup injuries." Coup and contrecoup injuries occur when the brain impacts the skull's interior surface due to rapid deceleration or acceleration, commonly seen in closed head injuries such as concussions. Penetrating traumatic brain injuries involve direct penetration of foreign objects into the brain tissue, and coup-contrecoup injuries are not typically associated with these types of injuries.
C) "Damage occurs from the penetrating injury causing leakage of cerebrospinal fluid." While penetrating injuries may result in cerebrospinal fluid leakage, this is not the primary mechanism through which they cause brain damage. Leakage of cerebrospinal fluid is more commonly associated with certain types of head trauma, such as skull fractures, rather than solely penetrating injuries.
D) "Damage to the brain is related to the size, route, and rate of speed of the object entering the brain." This statement is correct. The extent of brain damage in penetrating traumatic brain injuries depends on various factors, including the size, shape, and velocity of the penetrating object, as well as the route it takes through the brain tissue. Larger, faster-moving objects tend to cause more extensive damage, whereas smaller objects or those with slower velocities may cause more localized damage. Therefore, understanding these factors is crucial in assessing and managing patients with penetrating traumatic brain injuries.
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