Interventions that limit stressors for patients in a critical care environment include all of the following EXCEPT:
Conversing with them about other patients on the unit.
Providing clocks, calendars, and personal items in the room.
Adjusting lighting to promote normal sleep-wake cycles.
Educating the patient on the date and time of the day during routine care.
The Correct Answer is A
Choice A rationale
Discussing other patients is a violation of the Health Insurance Portability and Accountability Act and does nothing to reduce a patient's stress. In fact, hearing about the medical crises of others can increase a patient's anxiety and sense of vulnerability within the critical care unit. Professional boundaries must be maintained to ensure a therapeutic environment. Stressors in the ICU are often related to a loss of control, which is worsened by unprofessional and distracting conversations.
Choice B rationale
Clocks, calendars, and personal items provide essential sensory input that helps ground the patient in reality. The critical care environment is often devoid of natural time cues, leading to ICU psychosis or delirium. By providing familiar items and orientation tools, the nurse helps maintain the patient's cognitive function and reduces the psychological stress associated with disorientation. This intervention supports the patient's neurological status and helps stabilize the circadian rhythm during a prolonged hospital stay.
Choice C rationale
Adjusting lighting is a non-pharmacological intervention designed to synchronize the patient's biological clock with the external environment. Continuous bright light in the ICU disrupts sleep-wake cycles, leading to sleep deprivation and impaired healing. By dimming lights at night and providing natural light during the day, the nurse promotes restorative sleep. Proper sleep is vital for immune function and psychological resilience, reducing the overall physiological stress response characterized by elevated cortisol levels.
Choice D rationale
Frequent orientation to the date and time during routine nursing care is a standard delirium prevention strategy. Patients in intensive care often lose track of time due to sedation, illness, and the lack of windows. Constant reorientation provides a sense of security and reduces the fear associated with confusion. This cognitive support is a fundamental nursing intervention that addresses the emotional and mental stressors inherent in a high-acuity, technologically dense medical environment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Transcutaneous pacing is the immediate treatment of choice for symptomatic sinus bradycardia that does not respond to atropine. This non-invasive method delivers electrical impulses through large electrode pads placed on the chest and back to stimulate ventricular contraction. It serves as a crucial bridge until more definitive treatments, like a transvenous or permanent pacemaker, can be established. It is rapid to initiate and effective in maintaining an adequate heart rate and cardiac output.
Choice B rationale
An implanted or permanent pacemaker is a long-term solution for chronic or irreversible bradycardia, but it is not the immediate treatment for an acute, sudden-onset event in an unstable patient. The placement of a permanent device requires a surgical procedure and time for preparation. In an emergency where a patient is not responding to atropine, a faster, temporary method like transcutaneous pacing must be used first to stabilize the patient before considering a permanent implant.
Choice C rationale
An asynchronous defibrillator is used to deliver high-energy shocks to treat pulseless rhythms like ventricular fibrillation or pulseless ventricular tachycardia. It is not used for bradycardia, as the heart still has organized, albeit slow, electrical activity. Applying an unsynchronized shock to a patient with a pulse could induce a more dangerous rhythm, such as ventricular fibrillation, by hitting the T wave. Defibrillation is entirely inappropriate for a slow heart rate with a pulse.
Choice D rationale
Synchronized cardioversion is used to treat unstable tachydysrhythmias, such as supraventricular tachycardia or atrial fibrillation with a rapid ventricular response. The goal is to slow down or reset a fast heart rate. Using cardioversion on a patient with sinus bradycardia would be counterproductive and dangerous, as the patient's heart rate is already too slow. This intervention is designed to interrupt fast circuits, not to provide the regular stimulus needed to increase a slow rate.
Correct Answer is B
Explanation
Choice A rationale
Conduction delay through the atrioventricular node typically characterizes first degree heart block rather than atrial fibrillation. In atrial fibrillation, the atrioventricular node actually acts as a gatekeeper, attempting to block the overwhelming number of electrical impulses arriving from the atria. Slowed conduction would result in a bradycardic rhythm, whereas the dizziness and palpitations described by the client are usually associated with the rapid and irregular ventricular response common in this dysrhythmia.
Choice B rationale
Atrial fibrillation involves disorganized electrical activity originating from multiple ectopic foci within the atria, bypassing the sinoatrial node. This results in rapid, chaotic impulses that cause the atria to quiver rather than contract effectively. This loss of atrial kick and the subsequent irregular ventricular rate significantly reduce cardiac output and stroke volume. The resulting decrease in cerebral perfusion leads to dizziness, while the irregular, rapid heartbeats are perceived by the client as palpitations.
Choice C rationale
A sinoatrial node firing at a rate greater than 100 beats per minute defines sinus tachycardia, which is a regular rhythm. While sinus tachycardia can cause palpitations during exercise or stress, it does not involve the chaotic atrial activity seen in fibrillation. In atrial fibrillation, the sinoatrial node is no longer the primary pacemaker. The atrial rate in fibrillation can exceed 350 to 600 impulses per minute, which is far beyond the normal physiological limits of sinus tachycardia.
Choice D rationale
An electrical signal occurring before the expected sinus impulse describes a premature atrial contraction or a premature ventricular contraction. While these ectopics can cause a sensation of a skipped beat or palpitations, they are isolated events within an otherwise stable rhythm. Atrial fibrillation is a sustained and continuous state of electrical chaos rather than a single premature beat. Therefore, isolated premature signals do not explain the persistent dizziness and ongoing palpitations associated with this specific cardiac condition.
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