During a pulse deficit assessment, the nurse compares the apical pulse rate to which peripheral pulse rate?
Brachial pulse rate.
Dorsalis pedis pulse rate.
Radial pulse rate.
Carotid pulse rate.
The Correct Answer is C
Choice A rationale
The brachial pulse is located in the antecubital fossa and is primarily used for blood pressure measurement or assessing circulation in the infant. While it reflects systemic arterial pressure, it is not the standard peripheral site used for calculating a pulse deficit in adults. A pulse deficit occurs when the heart's contractions are too weak to transmit a palpable pressure wave to the periphery, and the radial artery is the conventional comparative site.
Choice B rationale
The dorsalis pedis pulse is found on the dorsal aspect of the foot and is used to evaluate peripheral vascular status in the lower extremities. Because of its significant distance from the heart, there is a natural delay and potential for dampened amplitude due to peripheral artery disease. It is not used for pulse deficit assessments because it does not provide a reliable immediate comparison to the central cardiac activity represented by the apical pulse.
Choice C rationale
A pulse deficit is determined by simultaneously measuring the apical pulse via auscultation and the radial pulse via palpation for one full minute. The radial artery is the most distal easily accessible site that should normally reflect every ventricular contraction. A difference between the apical and radial rates indicates that some cardiac contractions are not producing enough stroke volume to be felt peripherally, often seen in conditions like atrial fibrillation.
Choice D rationale
The carotid pulse is a central pulse located in the neck, reflecting pressure changes very close to the aorta. Because of its proximity to the heart, it is less likely to show a deficit compared to more distal peripheral sites. Using the carotid pulse would not accurately identify a pulse deficit because it usually remains palpable even when stroke volume is diminished, whereas the radial pulse would disappear, highlighting the discrepancy in perfusion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
While silence might help a nurse avoid impulsive or unhelpful comments, its primary clinical purpose is not self-censorship. Therapeutic communication focuses on the needs and progress of the client rather than the nurse’s internal struggles with what to say next. Using silence as a shield against saying the wrong thing is a defensive posture rather than a proactive therapeutic tool. Effective silence is a deliberate choice made to facilitate the patient's own processing and expression.
Choice B rationale
Silence provides a quiet space that encourages the client to organize their thoughts and share their feelings at their own pace. It signals that the nurse is present, attentive, and willing to wait, which reduces the pressure on the client to speak quickly. This technique is especially useful when discussing sensitive or emotional topics, as it allows the individual to lead the conversation and find the words they need to describe their internal experiences or concerns.
Choice C rationale
Silence is not intended to be an awkward gap that suggests a lack of rapport or a need for a different healthcare provider. If a client prefers to speak with someone else, that should be addressed through direct communication or observation of the client's comfort levels. Using silence to test whether a patient wants another nurse is an inefficient and potentially confusing approach. Therapeutic silence should instead foster a sense of safety and openness within the current relationship.
Choice D rationale
While a quiet environment is necessary for rest, therapeutic silence is a communication strategy used during active interaction. If the goal is to allow the patient to sleep, the nurse would typically leave the room or dim the lights rather than sitting in silence as a communication technique. Silence in therapy is about engagement and active listening without verbal interruption, aimed at promoting psychological insight and verbalization rather than physical sleep or unconsciousness for the patient.
Correct Answer is A
Explanation
Choice A rationale
Digoxin has a narrow therapeutic index, typically 0.5 to 2.0 ng/mL. Nausea and weakness are classic early signs of digoxin toxicity. Checking vital signs, particularly the apical pulse, is the priority nursing action to assess for bradycardia or dysrhythmias caused by toxic levels. Assessing the physiological status of the client provides immediate data to determine the severity of the situation before proceeding with further interventions or contacting the provider for laboratory testing.
Choice B rationale
Requesting an antiemetic addresses the symptom of nausea but fails to investigate the underlying cause, which is likely digoxin toxicity. Masking the nausea with medication could delay the diagnosis of a potentially life-threatening cardiac complication. In the context of heart failure and digoxin use, any new onset of gastrointestinal distress must be treated as a sign of toxicity until proven otherwise. Assessment of the client's current clinical stability must always precede symptomatic treatment.
Choice C rationale
A dietitian consult is an inappropriate and delayed response to an acute clinical change. While nutritional support is important for chronic congestive heart failure management, the immediate complaints of nausea and weakness suggest a drug-related complication rather than a primary dietary issue. Focusing on nutrition at this moment ignores the urgent safety risk posed by digoxin. The nurse must prioritize assessment of the client's cardiac and neurological status over long-term dietary planning.
Choice D rationale
Suggesting rest before eating is a passive intervention that ignores the diagnostic significance of the client's symptoms. Nausea in a client taking digoxin is a red flag that requires active clinical evaluation. Waiting for the client to rest does not provide the nurse with necessary data regarding heart rate or rhythm stability. The priority is to identify signs of toxicity early to prevent cardiac arrest or severe conduction blocks associated with high digoxin levels.
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