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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Answer: C. "I am not worried. This sort of thing happens all the time to us 'old people.'"
A. "I brought an updated list of all the medications he takes at home to help you and the doctors determine what the cause of this could be."
This response indicates understanding and proactive involvement in the client’s care. An updated medication list is crucial in evaluating potential causes of delirium, as certain medications or interactions can contribute to changes in mental status.
B. "I notified our family members that they should not come visit for a while, until they are better."
This statement reflects an understanding of the need for a calm environment for the client experiencing delirium. Reducing stimuli and visitors can help the client focus on recovery. It indicates the spouse is aware of the potential impact of social interactions on the client’s condition.
C. "I am not worried. This sort of thing happens all the time to us 'old people.'"
This response indicates a need for further teaching. It reflects a possible misunderstanding of delirium as a normal part of aging, which can be dismissive of the seriousness of the condition. Delirium is often a sign of underlying medical issues and should be treated with concern and urgency. Clients and their families need to understand that delirium is not a typical or benign occurrence and requires appropriate evaluation and intervention.
D. "I am trying to stay positive. I know that most people return to normal, but it is hard to see them like this."
This statement indicates a hopeful attitude while acknowledging the difficulty of the situation. It shows understanding that recovery is possible and reflects the spouse's emotional processing of the situation. Maintaining a positive outlook can be beneficial for both the client and the family during recovery.
Correct Answer is C
Explanation
A. Consume foods high in potassium: Potassium deficiency can contribute to certain health issues, but it is not directly linked to hearing loss. However, maintaining a balanced diet rich in nutrients, including potassium, is important for overall health.
B. Increase oral intake of water: Hydration is essential for overall health, but increasing oral intake of water is not specifically associated with decreasing the risk of hearing loss. While staying hydrated is beneficial for various bodily functions, including maintaining proper ear function, it is not a direct preventive measure for hearing loss.
C. Avoid smoking tobacco products: Smoking tobacco products is a significant risk factor for developing hearing loss. Smoking can damage blood vessels and reduce blood flow to the inner ear, leading to hearing impairment. Therefore, advising clients to avoid smoking or quit smoking is an important lifestyle modification to decrease the risk of hearing loss.
D. Limit alcohol to two drinks daily: Excessive alcohol consumption can have detrimental effects on hearing health, including increasing the risk of hearing loss and vestibular dysfunction. Therefore, limiting alcohol intake is recommended to reduce the risk of developing hearing-related problems.
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