Why is acute pain particularly dangerous for a patient having a heart attack?
Release of prostaglandins lowers the patient’s heart rate and blood pressure.
Release of substance P narrows the airways and leads to hypoxemia.
Release of endorphins causes dangerous elevation of blood pressure.
Stimulation of the sympathetic nervous system will increase cardiac workload.
The Correct Answer is D
Choice A reason: This is an incorrect choice because release of prostaglandins lowers the patient’s heart rate and blood pressure is not a reason why acute pain is particularly dangerous for a patient having a heart attack. Prostaglandins are inflammatory mediators that are involved in pain perception and modulation, but they do not have a direct effect on the heart rate and blood pressure. In fact, some prostaglandins may have a protective role in the cardiovascular system by preventing platelet aggregation and vasodilation.
Choice B reason: This is an incorrect choice because release of substance P narrows the airways and leads to hypoxemia is not a reason why acute pain is particularly dangerous for a patient having a heart attack. Substance P is a neuropeptide that is involved in pain transmission and modulation, but it does not have a significant effect on the airways or the oxygen level. Substance P may cause bronchoconstriction in some patients with asthma or chronic obstructive pulmonary disease, but this is not a common or serious complication of acute pain.
Choice C reason: This is an incorrect choice because release of endorphins causes dangerous elevation of blood pressure is not a reason why acute pain is particularly dangerous for a patient having a heart attack. Endorphins are endogenous opioids that are involved in pain inhibition and modulation, but they do not have a major effect on the blood pressure. Endorphins may cause a slight increase in blood pressure by activating the opioid receptors in the brainstem, but this is not a significant or harmful response to acute pain.
Choice D reason: This is the correct choice because stimulation of the sympathetic nervous system will increase cardiac workload is a reason why acute pain is particularly dangerous for a patient having a heart attack. The sympathetic nervous system is part of the autonomic nervous system that is responsible for the fight-or-flight response, which is triggered by acute pain. The sympathetic nervous system will increase the heart rate, blood pressure, and cardiac contractility, which will increase the oxygen demand and consumption of the heart. This will worsen the ischemia and injury of the myocardium, and may lead to arrhythmias, heart failure, or cardiac arrest.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: This is an incorrect choice because temperature, pulse, and blood pressure are not the most important vital signs for a patient who is experiencing shortness of breath. Temperature is not directly related to respiratory function, and pulse and blood pressure can be affected by other factors, such as anxiety or medication.
Choice B reason: This is the correct choice because pulse, respirations, and oxygen saturation are the most important vital signs for a patient who is experiencing shortness of breath. Pulse reflects the heart rate and rhythm, which can be altered by respiratory distress. Respirations reflect the rate and depth of breathing, which can indicate the severity of the condition. Oxygen saturation reflects the percentage of hemoglobin that is bound with oxygen, which can indicate the adequacy of oxygenation.
Choice C reason: This is an incorrect choice because temperature, pulse, and respirations are not the most important vital signs for a patient who is experiencing shortness of breath. Temperature is not directly related to respiratory function, and respirations alone do not provide enough information about the oxygenation status of the patient.
Choice D reason: This is an incorrect choice because respirations, blood pressure, and pain are not the most important vital signs for a patient who is experiencing shortness of breath. Blood pressure can be affected by other factors, such as anxiety or medication, and pain is a subjective symptom that can vary from person to person. Oxygen saturation is a more objective and reliable indicator of oxygenation than pain.
Correct Answer is D
Explanation
Choice A reason: This is an incorrect choice because gently trimming the patient’s toenails after soaking the feet in warm soapy water is not the best intervention of the nurse for a diabetic patient who has rough skin on the feet and thick, overgrown toenails. Trimming the toenails can be risky for the diabetic patient, as it can cause bleeding, infection, or injury to the nail bed or surrounding skin. The nurse should avoid cutting the toenails of the diabetic patient, unless instructed by a podiatrist.
Choice B reason: This is an incorrect choice because using a pumice stone to smooth roughened areas of skin on the patient’s feet is not the best intervention of the nurse for a diabetic patient who has rough skin on the feet and thick, overgrown toenails. A pumice stone is a porous rock that can be used to exfoliate the skin and remove dead cells. However, it can also damage the skin and cause abrasions, irritation, or infection. The nurse should be careful when using a pumice stone on the diabetic patient, and avoid rubbing too hard or too often.
Choice C reason: This is an incorrect choice because liberally applying lotion to the patient's feet especially between the toes is not the best intervention of the nurse for a diabetic patient who has rough skin on the feet and thick, overgrown toenails. Applying lotion to the feet can help to moisturize and soften the skin, but it can also create a moist environment that can promote fungal growth and infection. The nurse should apply lotion sparingly to the feet of the diabetic patient, and avoid applying it between the toes.
Choice D reason: This is the correct choice because obtaining a consultation for a podiatrist to assess the feet and provide nail care is the best intervention of the nurse for a diabetic patient who has rough skin on the feet and thick, overgrown toenails. A podiatrist is a specialist who can diagnose and treat foot problems, such as nail disorders, skin conditions, or infections. The podiatrist can safely and effectively trim the toenails of the diabetic patient, and provide education and advice on foot care and prevention of complications. The nurse should refer the diabetic patient to a podiatrist at least once a year, or more often if needed.
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