A female infant with a birth weight of 680 g was born at 26 weeks' gestation and admitted to the Children's Hospital Medical Center, Cincinnati, on the day of birth. She had a complicated postnatal course, required prolonged ventilatory support, and was weaned from supplemental oxygen by 8 months of age. Chest percussion (using a rubber conductive face mask) and chest vibration (using a battery-operated vibrator) were prescribed as therapeutic and preventive measures for pulmonary atelectasis. Passive exercises were also prescribed "to minimize increased muscle tone" of the infant. The infant also received repeated courses of parenteral nutrition (containing 100 IU of vitamin D2 [ergocalciferol], 0.45 mmole [18 mg] of elemental calcium, and 0.6 mmole [18.6 mg] of phosphorus per deciliter of infusate) via the peripheral and central venous route. Consistently, adequate enteral feeding (100 kcal/kg/day) was not achieved until 15 weeks postnatally. Incidental skeletal abnormalities were noted on
Koo WWK, Oestreich AE, Sherman R, Tsang RC, Steichen JJ, Young LW. Radiological Case of the Month. Am J Dis Child. 1985;139(10):1045–1046. doi:https://doi.org/10.1001/archpedi.1985.02140120091034
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