A 29-year-old G1P0 woman delivers a male infant at 37 weeks after a pregnancy complicated by persistently low amniotic fluid volume on prenatal ultrasound. At birth, the newborn has a flattened facial appearance and low-set ears. The extremities show contractures consistent with positional deformities. Shortly after delivery, the infant develops severe respiratory distress and hypoxemia requiring intubation. Chest imaging suggests markedly reduced lung volumes. Which of the following is the most likely immediate cause of death in this condition if severe and untreated?