A patient's capillary refill time in the toes is consistently delayed at 3.5 seconds. What additional assessment findings should you prioritize to determine the underlying issue?
Skin temperature and color in the toes.
The patient's recent dietary intake.
Explore the patient's history of nail infections.
Compare pulse strength bilaterally in the upper extremities.
The Correct Answer is A
Choice A reason: Capillary refill time exceeding 3 seconds indicates compromised peripheral perfusion or decreased cardiac output. Assessing skin temperature and color provides critical data regarding arterial flow and tissue oxygenation. Cold, pale, or cyanotic skin in the lower extremities often correlates with peripheral artery disease or systemic shock, requiring immediate clinical intervention.
Choice B reason: While long-term nutritional status can influence vascular health, recent dietary intake has no immediate physiological impact on capillary refill time. The nurse must prioritize physical assessment findings that indicate acute or chronic circulatory impairment rather than metabolic or nutritional history when evaluating a delayed refill time of 3.5 seconds.
Choice C reason: Nail infections like onychomycosis can alter the appearance of the nail bed, making capillary refill assessment difficult. However, a history of such infections does not explain a systemic or localized delay in perfusion. The nurse should focus on hemodynamic markers rather than localized fungal or bacterial nail pathologies.
Choice D reason: Comparing pulses in the upper extremities is a valid assessment for systemic circulation, but it does not address the localized delay found in the toes. To assess lower extremity perfusion, the nurse should prioritize pedal and post-tibial pulses rather than brachial or radial pulses to determine the level of obstruction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: The epidermis serves as the body's first line of defense against microbial invasion and ultraviolet radiation. While it helps prevent heat loss by limiting evaporation, it does not possess the specialized fatty tissue required for true thermal insulation. It is too thin to provide a significant barrier against the conduction of heat away from the body core.
Choice B reason: The subcutaneous layer contains lobules of fat cells that provide a critical insulating barrier. This adipose tissue reduces the rate of heat loss from the body to the environment, which is vital for maintaining homeostatic core temperatures. In clinical settings, a reduction in this layer, such as in elderly or malnourished patients, significantly increases the risk of hypothermia.
Choice C reason: The dermis contributes to thermoregulation primarily through the activity of eccrine sweat glands and the modulation of blood flow in its dense capillary networks. While these mechanisms are essential for heat dissipation (cooling), the dermis does not provide the passive, structural insulation found in the subcutaneous fat layer that prevents heat loss in cold environments.
Choice D reason: The stratum corneum is a specialized sub-layer of the epidermis that prevents desiccation and provides mechanical toughness to the skin surface. It does not contain lipids in a form or volume that would provide meaningful thermal insulation for the body. Its role is almost entirely focused on barrier function rather than systemic temperature maintenance or metabolic heat retention.
Correct Answer is B
Explanation
Choice A reason: Palpation involves using the hands to feel for masses, tenderness, or organomegaly. While deep palpation can detect a pulsating mass indicative of an aneurysm, it cannot detect a bruit, which is an auditory phenomenon caused by turbulent blood flow through a narrowed or partially occluded arterial vessel.
Choice B reason: Auscultation is the correct technique for identifying bruits. By using the bell of the stethoscope over the abdominal aorta, renal arteries, and iliac arteries, the nurse listens for low-pitched blowing or swishing sounds. These sounds are definitive evidence of vascular turbulence, often signifying atherosclerosis or an aneurysm within the abdominal vasculature.
Choice C reason: Inspection is the visual examination of the abdomen to check for symmetry, skin color, and visible pulsations. While a visible aortic pulsation might be noted in thin individuals or those with an aneurysm, the presence of a bruit is a sound-based finding that cannot be confirmed through visual inspection alone.
Choice D reason: Percussion is used to assess the density of abdominal contents and to estimate the size of organs like the liver and spleen by producing sounds (tympany or dullness). Percussion does not provide any information regarding vascular flow or the presence of the turbulent sounds associated with arterial bruits.
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