JOURNAL ARTICLE

Early volume targeted ventilation in preterm infants born at 22-25 weeks of gestational age

Linda Wallström, Amanda Sjöberg, Richard Sindelar
Pediatric Pulmonology 2021 February 21
33611849

BACKGROUND: Early hypocapnia in preterm infants is associated with intraventricular hemorrhage (IVH) and bronchopulmonary dysplasia (BPD). Volume targeted ventilation (VTV) has been shown to reduce hypocapnia in preterm infants. Less is known of VTV in infants born at <26 weeks gestational age (GA).

OBJECTIVES: Our aim was to investigate the short- and long-term effects of early VTV as compared to pressure limited ventilation (PLV) in extremely preterm infants on the incidence of hypocapnia, days on ventilatory support, IVH, and BPD.

STUDY DESIGN: A retrospective observational study of 104 infants born at 22-25 weeks GA (mean ± SD; 24+0  ± 1+1 GA; birth weight 619 ± 146 g), ventilated with either VTV (n = 44) or PLV (n = 60) on their first day of life. Ventilatory data and blood gases were collected at admission and every fourth hour during the first day of life, together with perinatal characteristics and outcomes.

RESULTS: Peak inflation pressure (PIP) was lower in the VTV-group than in the PLV-group during the first 20 h of life (p < .05), without any difference in respiratory rate or FiO2 . Incidence of hypocapnia (PaCO2  < 4.5 kPa) was lower with VTV than PLV during the first day of life (32% vs. 62%; p < .01). Infants in the VTV-group were more frequently extubated at 24 h (30% vs. 13%; p < .05). IVH Grade ≥3, BPD, and time on mechanical ventilation did not differ between the groups.

CONCLUSIONS: VTV is safe to apply in infants born at <26 GA and was observed to result in a lower incidence of hypocapnia compared to infants ventilated by PLV, without any differences in outcomes.

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