Which of the following is a characteristic of Koplik spots in children with measles?
They present as fluid-filled vesicles on the child's chest.
They appear as small, red spots with white centers on the buccal mucosa.
They are enlarged parotid glands.
They are a gray pseudomembrane covering the pharynx.
The Correct Answer is B
Choice A rationale
Fluid-filled vesicles on the chest are not characteristic of Koplik spots. Vesicular rashes are more commonly associated with conditions like varicella (chickenpox) or herpes zoster, where the viral replication leads to the formation of small, elevated, fluid-filled lesions on the skin surface.
Choice B rationale
Koplik spots are pathognomonic for measles, appearing as small, irregular, bright red spots with bluish-white centers on the buccal mucosa, typically opposite the molars. They represent necrotic epithelial cells in the buccal mucosa and are an early diagnostic sign, often appearing 2-3 days before the generalized rash.
Choice C rationale
Enlarged parotid glands are characteristic of mumps, a viral infection affecting the salivary glands, particularly the parotid glands. This condition leads to swelling and tenderness in the areas anterior to the ears and below the jawline, distinct from the oral lesions seen in measles.
Choice D rationale
A gray pseudomembrane covering the pharynx is a hallmark sign of diphtheria, a bacterial infection caused by *Corynebacterium diphtheriae*. This pseudomembrane is a tough, adherent lesion composed of fibrin, bacteria, and necrotic cells that can obstruct the airway, unrelated to measles.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","F"]
Explanation
Choice A rationale
Post-kidney transplant, immunosuppressive medications are crucial to prevent rejection, which also compromises the immune system. Engaging in contact sports significantly increases the risk of direct trauma to the transplanted kidney, potentially causing injury or rupture, which could necessitate re-transplantation or lead to graft loss.
Choice E rationale
Grapefruit contains furanocoumarins, compounds that inhibit the cytochrome P450 3A4 (CYP3A4) enzyme system in the liver and intestines. Many immunosuppressants, like calcineurin inhibitors (e.g., cyclosporine, tacrolimus), are metabolized by CYP3A4. Inhibition of this enzyme can lead to increased drug concentrations and elevated risk of toxicity.
Choice F rationale
Fluid restriction post-kidney transplant may be necessary, particularly in the immediate postoperative period or if the patient experiences fluid overload or delayed graft function. Excessive fluid intake could contribute to hypertension or pulmonary edema, complicating recovery and potentially stressing the newly transplanted kidney.
Correct Answer is C
Explanation
Choice A rationale
Hypertension is less likely to be a direct complication of peritoneal dialysis. In fact, effective peritoneal dialysis can help manage fluid balance and remove excess sodium, which can contribute to better blood pressure control in individuals with kidney failure. The process aims to remove solutes and water, often mitigating hypertensive states.
Choice B rationale
Hyperglycemia can be a complication of peritoneal dialysis due to the high dextrose concentration in the dialysate solution. Dextrose, a type of sugar, is used as an osmotic agent to draw excess fluid and waste products from the blood into the peritoneal cavity. This can lead to increased glucose absorption into the bloodstream.
Choice C rationale
Peritonitis, an inflammation of the peritoneum, is the most common and serious complication of peritoneal dialysis. It occurs due to bacterial or fungal contamination of the peritoneal cavity, often introduced during catheter manipulation or connection. Symptoms include abdominal pain, cloudy dialysate, and fever, requiring prompt antibiotic treatment.
Choice D rationale
Hypokalemia is generally not a common complication of peritoneal dialysis. The dialysate solution typically contains potassium or is potassium-free, allowing for controlled removal of potassium from the body. However, significant potassium imbalances are usually managed by adjusting the dialysate composition rather than being a frequent, inherent complication.
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