A nurse is preparing to palpate a client's abdomen. Which of the following findings is an expected abdominal characteristic?
Palpable enlarged liver edge extending 4 cm below the costal margin
Soft, non-tender abdomen with no masses or rigidity
Visible pulsations in the epigastric region
Firm, rigid abdomen with rebound tenderness
The Correct Answer is B
Choice A reason: A liver edge that is palpable 4 cm below the right costal margin is considered hepatomegaly, a pathological finding. In a healthy adult, the liver is generally not palpable, or it may be palpable just at or slightly below the costal margin upon deep inspiration; 4 cm is clinically significant.
Choice B reason: A soft, non-tender abdomen without palpable masses or involuntary guarding (rigidity) is the hallmark of a normal physical examination. This indicates the absence of intra-abdominal inflammation, significant organomegaly, or abnormal fluid collections, allowing for comfortable palpation by the examiner across all four quadrants.
Choice C reason: While normal aortic pulsations are sometimes visible in the epigastric region, specifically in thin individuals, it is not the standard "expected" finding in a general assessment. Visible pulsations must always be carefully evaluated to rule out an abdominal aortic aneurysm, making it a finding that requires further clinical correlation.
Choice D reason: A firm, rigid abdomen associated with rebound tenderness is a clinical sign of peritonitis, which is severe peritoneal inflammation. This is a medical emergency and is definitively not an expected finding; it indicates deep infection or visceral perforation requiring immediate surgical or medical intervention.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: The endocardium is the innermost layer of the heart, consisting of endothelial cells that line the chambers and valves. While it provides a smooth, frictionless surface for blood flow, it does not possess the contractile properties necessary to generate the mechanical force required for pumping blood.
Choice B reason: The myocardium is the thick, muscular middle layer of the heart wall. It is composed of specialized cardiac muscle cells that possess the contractile ability to generate high pressure and force, making it the primary engine responsible for the mechanical pumping action that circulates blood throughout the body.
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Choice C reason: The epicardium is the outer serous layer of the heart wall, also known as the visceral layer of the serous pericardium. It serves a protective function and contains coronary blood vessels and adipose tissue, but it plays no role in the direct contractile force production for blood circulation.
Choice D reason: The pericardium is the fibrous sac that surrounds and protects the heart. It provides physical support and prevents the heart from over-expanding. While it is essential for cardiac health, it is a structural covering and does not contribute to the contractile muscular force of the heart chambers.
Correct Answer is A
Explanation
Choice A reason: Scoliosis is defined as a lateral curvature of the spine. It primarily involves structural abnormalities or rotational deformities of the vertebrae themselves. These bony segments become misaligned, leading to the characteristic S-shaped or C-shaped curvature of the spinal column that is assessed clinically in pediatric patients.
Choice B reason: The spinal cord resides within the vertebral canal. While severe scoliosis can potentially compress or affect the spinal cord, the condition itself is a disorder of the skeletal alignment of the vertebrae, not a primary pathology of the neural tissue of the central nervous system.
Choice C reason: Ligaments provide stability and connect bones to bones. Although ligaments are involved in maintaining the alignment of the spine, scoliosis is characterized by the structural deformity of the vertebrae rather than a primary disease process originating in the ligamentous tissues themselves.
Choice D reason: Muscle fibers are involved in the movement and stabilization of the spine. While imbalances in muscle strength or tone can contribute to secondary postural issues, they are not the primary structure responsible for the structural, lateral deformity defined as scoliosis in pediatric clinical diagnostic criteria.
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