Which of the following descriptions matches the term 'cyanosis'?
Pale skin color often associated with anemia
Yellowish skin color
Red to purple skin tone indicating inflammation
Bluish or grayish skin discoloration due to inadequate oxygenation
The Correct Answer is D
Choice A reason: Pale skin color is referred to as pallor. This occurs due to a decrease in the number of circulating red blood cells or reduced blood flow to the skin, commonly seen in conditions like anemia, shock, or local arterial insufficiency. It is distinct from the blue tint seen in cyanosis.
Choice B reason: A yellowish discoloration of the skin, sclera, and mucous membranes is known as jaundice or icterus. This condition is typically caused by elevated levels of bilirubin in the blood, often signaling hepatic dysfunction, biliary obstruction, or excessive hemolysis of red blood cells.
Choice C reason: Redness of the skin is termed erythema. This is caused by hyperemia, or increased blood flow to the capillaries near the skin surface, often due to inflammation, fever, or localized infection. Purple tones may indicate ecchymosis or deep tissue injury, rather than a lack of oxygen.
Choice D reason: Cyanosis is a clinical sign characterized by a bluish or grayish tint to the skin and mucous membranes. This occurs when the concentration of deoxygenated hemoglobin in the peripheral capillaries exceeds 5 g/dL, indicating that the tissues are not receiving adequate oxygen from the blood.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: A client receiving enteral feeding has a nutritional risk factor, but their ability to change positions independently significantly mitigates the risk of prolonged tissue ischemia. Mobility is a primary protective factor in the Braden Scale, as it allows for the natural redistribution of pressure over bony prominences, preventing capillary occlusion.
Choice B reason: An unresponsive client who only changes position occasionally is at the highest risk due to the combination of impaired sensory perception and physical immobility. Being unresponsive means they cannot feel or react to the pain associated with tissue hypoxia, leading to prolonged pressure that exceeds capillary closing pressure, which rapidly causes cellular necrosis.
Choice C reason: A client who makes frequent changes in position and is ambulatory is at the lowest risk among the group. Active movement and walking maintain adequate peripheral circulation and ensure that no single area of skin is subjected to the sustained pressure required for the formation of stage 1 or deeper pressure injuries.
Choice D reason: While poor nutritional intake (eating only 25% of meals) is a recognized risk factor for skin breakdown, being alert and responsive allows the client to shift their weight in response to discomfort. Sensory perception and the ability to move independently are more significant predictors of immediate pressure injury risk than isolated nutritional deficits in an alert patient.
Correct Answer is C
Explanation
Choice A reason: While establishing rapport is part of an assessment, the sequence of physical examination is based on physiological principles rather than psychological preparation. Percussion provides clinical data about the density of underlying organs and the presence of air or fluid, which dictates how the nurse should safely proceed with palpation.
Choice B reason: Detecting fluid waves is a specific technique for assessing ascites, but it is not the primary reason for the general sequence of the exam. Percussion is used to map out organ boundaries and detect tympany or dullness, which helps the nurse avoid causing unnecessary pain during subsequent palpation.
Choice C reason: Percussion allows the nurse to identify the location, size, and density of underlying structures such as the liver, spleen, and bladder. By identifying areas of tenderness or abnormal masses through percussion first, the nurse can prioritize which quadrants require more cautious, light, or deep palpation to prevent injury.
Choice D reason: Bowel sound regularity is established strictly through auscultation. Percussion and palpation can actually alter the frequency and intensity of bowel sounds by stimulating peristalsis. Therefore, auscultation must always occur before these manual maneuvers to ensure the most accurate representation of the patient's baseline gastrointestinal activity.
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