The use of nasal CPAP in newborns with respiratory distress syndrome

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Abstract
The efficiency of applying continuous positive airway pressure (CPAP) by the nasal route was retrospectively analyzed in 32 newborns with RDS (23 uncomplicated HMD, 2 HMD with additional cardiac or pulmonary complications and 7 RDS of non-hyaline membrane etiology) who underwent nasal CPAP treatment at the Kinderspital Zurich from 1972–1974. 16 of the 23 infants with uncomplicated HMD were successfully treated with CPAP. They showed a significant rise in Pa02 as well as a significant drop in respiratory frequency during nasal CPAP application, the PaC02 did not change significantly. The remaining 7 infants in this group ( 23 7 ) had to be intubated and mechanically ventilated owing to a persistent high FI02 (4 infants), technical difficulties (1) or nasal hypersecretion (2). Two of these 23 infants died, one of meningitis, one of cerebral hemorrhage. The two infants with HMD and additional cardiac or pulmonary complications and 3 of 7 infants with RDS of non-hyaline membrane etiology had to be intubated and mechanically ventilated after failure of nasal CPAP. All 9 infants in these two groups survived. The nasal CPAP system as described is a simple, inexpensive and effective method of applying CPTPP in newborns with uncomplicated HMD, except radiological stage IV. In HMD with additional cardiac or pulmonary complications and in RDS of non-hyaline membrane etiology the results of nasal CPAP treatment were not convincing.