Clinical picture of a 15-day-old newborn with severe coarctation of aorta will include the following Except:

Correct Answer: B

Rationale: Coarctation of the aorta typically causes weak femoral pulses but does not affect the right brachial pulse significantly, as the narrowing is usually distal to the right subclavian artery.

Correct Answer: B

Rationale: Asthma is a TH2-mediated inflammatory condition where eosinophils play a key role in airway hyperresponsiveness. Increased IgE, not IgA, is associated with allergic asthma, and viral infections can trigger but do not cause asthma.

Correct Answer: D

Rationale: Severe coarctation leads to critical left ventricular outflow obstruction, causing neonatal heart failure.

Correct Answer: A

Rationale: Intense pruritus is the hallmark of atopic dermatitis, often leading to scratching, lichenification, and secondary skin infections.

Correct Answer: B

Rationale: Von Willebrand disease affects platelet function rather than count, leading to prolonged bleeding time despite a normal platelet count.

Correct Answer: B

Rationale: Asthma is a TH2-mediated inflammatory condition where eosinophils play a key role in airway hyperresponsiveness. Increased IgE, not IgA, is associated with allergic asthma, and viral infections can trigger but do not cause asthma.

Correct Answer: A

Rationale: Hypernatremic dehydration occurs when water loss exceeds sodium loss, leading to increased serum osmolality (>295 mOsm/L) and sodium levels (>145 mEq/L). This can result from inadequate fluid intake, excessive sweating, or osmotic diuresis.

Correct Answer: A

Rationale: Skin prick testing results are typically read within 15 to 20 minutes, allowing for immediate diagnosis of allergic sensitivities.

Correct Answer: B

Rationale: Gastroschisis is a congenital defect where the intestines protrude through the abdominal wall without a covering sac, increasing the risk of infection and dehydration. It requires surgical repair soon after birth.