Which of the following clinical findings are usually seen in meconium aspiration syndrome? 1. Tachypnea and grunting 2. Irregular pulmonary densities on the chest film 3. Metabolic acidosis 4. Respiratory alkalosis
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: B
Infants with MAS typically have gasping respirations, tachypnea, grunting, and retractions. The chest radiograph usually shows irregular pulmonary densities, which represent areas of atelectasis, and hyperlucent areas, which represent hyperinflation due to air trapping.
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