The client has a heart rate averaging 56 beats/min.
The client has no adverse symptoms associated with this bradycardia and is not being treated for it. Which of the following activity modifications should the nurse suggest to avoid further slowing of the heart rate?
Avoid strenuous exercise, such as running, during the late afternoon.
Limit your intake of caffeinated drinks to no more than two cups per day.
Make certain that your bath water is warm (100 degrees F).
Avoid bearing down or straining while having a bowel movement.
The Correct Answer is D
Choice A rationale
Strenuous exercise generally increases the heart rate through sympathetic nervous system activation and the withdrawal of vagal tone. For a client with a baseline heart rate of 56 beats/min, which is considered sinus bradycardia (normal range is 60 to 100 beats/min), exercise would actually raise the heart rate temporarily. Unless the client is symptomatic with exercise intolerance, avoiding running is not a standard recommendation to prevent further slowing of the heart rate in asymptomatic bradycardia.
Choice B rationale
Caffeine is a methylxanthine that acts as a central nervous system stimulant and increases the heart rate by inhibiting adenosine receptors and increasing cyclic AMP. Restricting caffeine would actually remove a stimulant that might be helping to maintain the heart rate. While excessive caffeine is avoided for other cardiac issues like palpitations or tachycardia, it is not a logical intervention to prevent the heart rate from dropping further in a client who is already bradycardic.
Choice C rationale
Bath water at 100 degrees F is close to normal body temperature and is unlikely to cause significant autonomic shifts. However, very hot water can cause peripheral vasodilation, which might lead to a compensatory increase in heart rate. The goal here is to avoid interventions that trigger the parasympathetic nervous system. While warm water is safe, it does not specifically address the physiological mechanism of preventing a further decrease in the heart rate like avoiding vagal stimulation does.
Choice D rationale
Bearing down or straining during a bowel movement triggers the Valsalva maneuver, which significantly increases intrathoracic pressure. This pressure stimulates the baroreceptors, leading to a potent vagal response that slows the heart rate. In a client with a heart rate of 56 beats/min, this vagal stimulation could cause the heart rate to drop to dangerously low levels, potentially leading to syncope or decreased cardiac output. Avoiding the Valsalva maneuver is a crucial preventive measure for bradycardic clients.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is Choice A.
Step 1 is 28 units ÷ 1 is 28 units.
Correct Answer is C
Explanation
Choice A rationale
Providing 100.
Choice B rationale
A mini-tracheostomy is a specialized procedure used primarily for secretion management in patients who have a stable respiratory drive but difficulty clearing mucus. It does not provide the positive pressure ventilation required to treat acute hypercapnic failure and bradypnea. With a respiratory rate of 8, the patient is failing to move enough air to maintain acid-base balance. Suctioning alone will not increase the alveolar ventilation or correct the rising levels of carbon dioxide in the blood.
Choice C rationale
The patient is showing signs of imminent respiratory arrest, indicated by a low respiratory rate of 8 and a declining level of consciousness. Endotracheal intubation and positive pressure ventilation are necessary to take over the work of breathing and ensure adequate gas exchange. This intervention allows for precise control of tidal volume and rate to blow off excess carbon dioxide. Normal SpO2 is 95.
Choice D rationale
While BiPAP is often used for hypercapnic failure, it is contraindicated in patients who are lethargic or have a depressed respiratory drive. The patient must be awake and able to protect their airway and cooperate with the mask for BiPAP to be effective. A respiratory rate of 8 suggests the patient cannot maintain the necessary effort. In such cases, non-invasive ventilation is likely to fail, making invasive intubation the safer and more definitive collaborative intervention to stabilize the patient.
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