What is a diagnostic tool used to evaluate the electrical conduction of the heart and provides information on the heart rate and heart rhythm?
Stethoscope
Blood pressure cuff and monitor
Electrocardiogram
Doppler
The Correct Answer is C
Choice A reason: A stethoscope assesses heart sounds, detecting murmurs or irregular beats, but does not measure electrical conduction. It provides auditory data on valve function, not heart rate or rhythm via electrical activity. Electrocardiograms are required for detailed analysis of cardiac electrical patterns, making this choice incorrect.
Choice B reason: A blood pressure cuff measures arterial pressure, reflecting cardiovascular workload, but not electrical conduction. It provides systolic and diastolic values, not heart rhythm or rate data. Electrical activity assessment requires tools like electrocardiograms, rendering this choice irrelevant for the described diagnostic purpose.
Choice C reason: An electrocardiogram (ECG) records the heart’s electrical activity, mapping conduction pathways to assess heart rate and rhythm. It detects arrhythmias, ischemia, or conduction delays by analyzing waveforms like P, QRS, and T, making it the precise tool for evaluating cardiac electrical function, as required by the question.
Choice D reason: Doppler ultrasound evaluates blood flow velocity, used in vascular or fetal assessments, but does not measure cardiac electrical conduction. It lacks the capability to assess heart rate or rhythm through electrical signals, unlike an electrocardiogram, making it an incorrect choice for this diagnostic purpose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Fatigue is not part of BE FAST (Balance, Eyes, Face, Arms, Speech, Time) and is nonspecific, not a primary stroke sign. Facial drooping is critical. Assuming fatigue risks missing urgent stroke symptoms, delaying thrombolytic therapy, essential for minimizing brain damage within the critical time window.
Choice B reason: Fever is not in BE FAST and is not a primary stroke indicator, though it may occur later. Facial asymmetry is a key sign. Assuming fever misdirects assessment, risking delayed stroke recognition, critical for initiating rapid interventions like tPA to restore cerebral perfusion and reduce disability.
Choice C reason: Feet (balance) aligns with “B” in BE FAST, not “F,” which represents facial drooping. Misidentifying this risks confusing stroke assessment, potentially delaying recognition of facial asymmetry, a hallmark sign, critical for prompt stroke intervention to minimize neurological damage and improve patient outcomes.
Choice D reason: In BE FAST, “F” stands for face, assessing facial drooping or asymmetry, a common stroke sign due to cranial nerve VII involvement. It’s critical for rapid identification, enabling timely interventions like thrombolytics within 4.5 hours, minimizing brain damage and improving recovery chances in acute ischemic stroke patients.
Correct Answer is B
Explanation
Choice A reason: Palpating tender areas first may cause patient discomfort and guarding, reducing assessment accuracy. Palpation uses the palmar side or finger pads, starting with non-tender areas. Assuming this risks poor technique, potentially missing subtle findings like masses or edema, critical for comprehensive physical assessment in clinical practice.
Choice B reason: Palpation uses the palmar side of the hands or finger pads for light or deep touch to assess texture, tenderness, or masses. This technique ensures sensitivity and accuracy, detecting abnormalities like organ enlargement or fluid accumulation. Proper palpation is essential for thorough physical exams, guiding diagnosis and care planning effectively.
Choice C reason: Short, quick taps define percussion, not palpation, which involves sustained touch to assess underlying structures. Confusing these techniques risks incorrect assessment, missing findings like organ size or tenderness. Palpation’s distinct method using finger pads ensures accurate detection, critical for identifying abnormalities in physical examinations.
Choice D reason: Using a stethoscope is for auscultation, not palpation, which relies on manual touch with finger pads or palms. Assuming stethoscope use misaligns with palpation’s purpose, risking incomplete assessment of tactile findings like masses or swelling, essential for accurate diagnosis and effective patient care planning.
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