A client presents with yellowing of the eyes and skin.
Which of the following should the nurse evaluate as a potential cause of this condition?
Appendicitis.
Cirrhosis.
Ulcerative colitis.
Diverticulosis.
The Correct Answer is B
Choice A rationale
Appendicitis is the acute inflammation of the vermiform appendix, typically caused by an obstruction of the appendiceal lumen. This condition usually presents with periumbilical pain that migrates to the right lower quadrant, fever, and leukocytosis. It does not involve the biliary system or the liver's metabolic pathways. Therefore, it does not lead to the accumulation of bilirubin in the bloodstream or the resulting yellowing of the skin and sclera known as jaundice.
Choice B rationale
Cirrhosis is characterized by extensive scarring of the liver tissue, which replaces functional hepatocytes with non-functional fibrotic tissue. This damage impairs the liver's ability to conjugate and excrete bilirubin, a byproduct of red blood cell breakdown. When bilirubin levels exceed the normal range of 0.3 to 1.2 mg/dL, it deposits in the tissues, causing the yellow discoloration known as icterus or jaundice. This finding is a classic clinical indicator of liver dysfunction.
Choice C rationale
Ulcerative colitis is a chronic inflammatory bowel disease that primarily affects the mucosal layer of the colon and rectum. While it can have extra-intestinal manifestations, such as primary sclerosing cholangitis which could cause jaundice, the disease itself is localized to the large intestine. The primary symptoms are bloody diarrhea, abdominal cramping, and urgency. It is not a direct or common cause of jaundice in the same way that primary liver disease is.
Choice D rationale
Diverticulosis is the presence of small, bulging pouches in the digestive tract, most commonly in the sigmoid colon. This condition is often asymptomatic unless the pouches become inflamed or infected, a state known as diverticulitis. It is a structural abnormality of the intestinal wall and does not affect the liver's ability to process bile or bilirubin. Consequently, it has no physiological link to the development of jaundice or yellowing of the skin.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
The frontal lobe is primarily responsible for motor function, problem-solving, spontaneity, memory, language, initiation, judgement, impulse control, and social and sexual behavior. A stroke in the frontal lobe would more likely cause hemiparesis, Broca's aphasia (difficulty speaking), or profound changes in personality. It does not contain the primary centers for auditory processing. Therefore, the patient's specific symptoms of hearing difficulty do not align with the functional specializations of the frontal cortex.
Choice B rationale
The occipital lobe is the visual processing center of the brain. It handles visual recognition, color perception, and depth perception. A stroke affecting the occipital lobe would result in visual field cuts or total blindness in specific areas of the visual field. It has no role in hearing or the regulation of emotional behaviors. Since the patient is presenting with auditory and emotional disturbances rather than sight issues, the occipital lobe is an unlikely site for the lesion.
Choice C rationale
The temporal lobe contains the primary auditory cortex and is heavily involved in processing sensory input into derived meanings for the retention of visual memory, language comprehension, and emotional association. The limbic system structures, such as the amygdala, are located within or near the temporal lobe and govern emotional behavior. Damage here frequently causes hearing deficits and emotional instability. This perfectly matches the patient's presentation of difficulty with hearing and altered emotional states following a stroke.
Choice D rationale
The parietal lobe is responsible for integrating sensory information from various parts of the body, specifically touch, pressure, and spatial awareness. It houses the somatosensory cortex. Damage to the parietal lobe typically results in hemispatial neglect, difficulty with mathematics (acalculia), or loss of sensation on one side of the body. It is not the primary site for auditory or emotional regulation. Thus, a parietal stroke would not explain the patient's hearing loss and behavioral changes.
Correct Answer is C
Explanation
Choice A rationale
Infection of the endocardium describes endocarditis, which is an inflammatory process usually involving the heart valves and the inner lining of the heart chambers. This condition is typically caused by bacteria entering the bloodstream and colonizing damaged heart tissue. While serious, it is a different pathological process from a myocardial infarction, which is primarily a vascular event involving the coronary arteries rather than a primary infectious process of the heart lining.
Choice B rationale
A temporary deficit of oxygen that resolves with rest is the physiological definition of angina pectoris, specifically stable angina. In this state, the heart muscle experiences ischemia, which causes pain, but the cells do not suffer permanent damage or death because blood flow is restored quickly. Myocardial infarction is distinguished from this by the fact that the deprivation of oxygen is prolonged enough to cause irreversible tissue death and cellular necrosis.
Choice C rationale
Myocardial infarction occurs when a coronary artery is completely or nearly completely obstructed, often by a ruptured plaque followed by thrombus formation. This total blockage halts the delivery of oxygen and nutrients to the downstream cardiac tissue. Without blood flow, the myocytes undergo anaerobic metabolism, eventually leading to cell death and the loss of contractile function. This permanent structural damage is the defining characteristic of an infarction versus transient ischemia.
Choice D rationale
An increase in oxygen consumption by myocardial cells can trigger ischemia if the supply cannot keep up, but it does not describe the primary mechanism of an infarction. While high heart rates or hypertension increase demand, an infarction is defined by the failure of the supply line, usually due to a physical blockage. Increased demand is more often the precipitating factor for stable angina in a patient who already has narrowed, but not blocked, arteries.
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