A nurse is providing care for a client following a cardiac arrest due to pulseless electrical activity (PEA). Which of the following alterations are causes of PEA? (Select All that Apply.)
Hypertension
Hypovolemia
Hypoxia
Hyperkalemia
Hypernatremia
Hyperthermia
Correct Answer : B,C,D
Pulseless electrical activity (PEA) refers to a situation in which an electrocardiogram (ECG) shows electrical activity in the heart, but there is no effective mechanical activity and no palpable pulse. PEA can result from various underlying conditions that impair cardiac function or compromise circulation.
A. Hypertension: Hypertension, or high blood pressure, is not typically a direct cause of PEA. While uncontrolled hypertension can contribute to cardiovascular disease and increase the risk of cardiac events such as myocardial infarction, it is not a direct cause of PEA.
B. Hypovolemia: Hypovolemia, or low blood volume, is a common cause of PEA. Reduced circulating blood volume leads to decreased preload and inadequate filling of the heart chambers, impairing cardiac output. This can result in ineffective cardiac contractions and the development of PEA.
C. Hypoxia: Hypoxia, or inadequate oxygenation of tissues, is a significant cause of PEA. Insufficient oxygen delivery to the myocardium impairs cardiac function and can lead to ineffective cardiac contractions. Without adequate oxygenation, the heart is unable to generate sufficient mechanical force to maintain circulation, resulting in PEA.
D. Hyperkalemia: Hyperkalemia, or elevated levels of potassium in the blood, can cause PEA by disrupting cardiac electrical activity. Excessive potassium ions in the extracellular fluid alter the normal myocardial action potential, leading to cardiac conduction abnormalities and potential arrhythmias, including PEA.
E. Hypernatremia: Hypernatremia, or elevated levels of sodium in the blood, is not typically a direct cause of PEA. While severe hypernatremia can lead to neurological symptoms and dehydration, it does not directly impair cardiac electrical activity or mechanical function to the extent that it causes PEA.
F. Hyperthermia: Hyperthermia, or elevated body temperature, is not typically a direct cause of PEA. While extreme hyperthermia can lead to cardiovascular complications such as heat stroke, it is not a common cause of PEA unless it is associated with severe systemic metabolic derangements.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. "I can't see anything from the sides of my eyes." This statement suggests a visual field deficit, which may be indicative of conditions affecting peripheral vision, such as glaucoma, retinal detachment, or optic nerve disorders. It is not a typical symptom of cataracts.
B. "My vision is almost gone from the center part of my eye." This statement indicates a central visual impairment, which is a common symptom of cataracts. Cataracts cause clouding of the lens, leading to blurred or dimmed vision, especially in the center of the visual field. This symptom often progresses gradually over time.
C. "My contact lenses just don't fit like they used to." This statement suggests discomfort or fit issues with contact lenses and is not specifically indicative of cataracts. It may be related to changes in the shape or health of the cornea, conjunctiva, or tear film.
D. "I keep seeing flashes of lights moving around in my eye." Flashes of light in the visual field are not typical symptoms of cataracts. They may indicate other ocular conditions such as vitreous detachment, migraines with aura, or retinal disorders.
Correct Answer is B
Explanation
A. Lower extremities edematous with decreased pulses and cool to the touch While this finding suggests impaired circulation associated with peripheral artery disease, it does not indicate an immediate need for intervention. However, it requires timely assessment and intervention to prevent further complications.
B. Pain, pallor, and paresthesia in the foot This finding indicates critical limb ischemia, which is a severe complication of peripheral artery disease requiring immediate intervention. Pain, pallor (pale color), and paresthesia (abnormal sensations like tingling or numbness) suggest inadequate blood flow to the affected limb, putting the client at risk for tissue damage and limb loss if not promptly addressed.
C. Murmur auscultated at the left 5th midclavicular line, slight dyspnea, and lower extremity edema These findings are suggestive of cardiac issues such as heart failure rather than immediate complications of peripheral artery disease. While they require attention, they do not signify an urgent need for intervention specific to peripheral artery disease.
D. Presence of an open wound near the ankle with serous drainage and pruritus While an open wound warrants assessment and appropriate wound care, it does not indicate an immediate need for intervention unless there are signs of infection or severe tissue damage. In this scenario, the presentation of pain, pallor, and paresthesia indicates a more urgent need for intervention to prevent tissue necrosis and limb loss.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.