Abstract:Oral breathing is an important defense mechanism, yet its prevalence and relationship to behavioral activities have not been studied in preterm infants. We tested the hypothesis that oral breathing is rare in these infants and likely to be restricted to periods of body movements. Ten healthy preterm infants (birthweight 1300 +/- 100 g [SE]; gestational age 29 +/- 1 weeks; postnatal age 36 +/- 7 days) were studied. Ventilation was measured with a nose piece and screen flowmeter. Oral breathing was detected with… Show more
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