OBJECTIVE: To assess oxygen diffusion at 36 weeks' post-menstrual age in preterm infants by means of the non-invasive oxygen saturation/fraction of inspired oxygen ratio (36w-SFR) and to identify factors associated with 36w-SFR - ie, gestational age (GA) and early respiratory disease patterns (ERP). METHODS: Retrospective analysis of prospectively collected data. SETTING: Neonatal Intensive Care Unit. PATIENTS: 1005 preterm infants born below 32 weeks' GA. INTERVENTIONS: 36w-SFR was the mean of SFR values over 24 h on the day infants reached 36 weeks' PMA. MAIN OUTCOME MEASURES: 36w-SFR. STATISTICS: descriptive statistics, univariate, and multivariate analysis to study associations of 36w-SFR, including GA and ERP. RESULTS: 36w-SFR was significantly different between infants with and without bronchopulmonary dysplasia (BPD) (371 vs 467, P < 0.001), and according to ERP (LowFIO2 466, pulmonary improvement-PI 460, pulmonary deterioration-PD 405, early persistent pulmonary deterioration-EPPD 344, P < 0.001). Significant differences were found either in BPD and in non-BPD patients according to ERP (P < 0.001). Patients without BPD had significant differences in 36w-SFR according to GA (P < 0.001), while infants with BPD and increasing GA at birth had a non-significant trend for increased 36w-SFR (P = 0.621). Factors associated with 36w-SFR were GA, being small for GA, sepsis, human milk feeding, and ERP. CONCLUSIONS: Preterm infants without BPD had a spectrum of oxygen diffusion impairment that was inversely associated with GA at birth. Infants with different patterns of ERP had significant differences in 36w-SFR.
Oxygen saturation/FIO2 ratio at 36 weeks’ PMA in 1005 preterm infants: Effect of gestational age and early respiratory disease patterns / Nobile, Stefano; Marchionni, Paolo; Gidiucci, Carlo; Correani, Alessio; Palazzi, Maria L.; Spagnoli, Cristina; Rondina, Clementina; Marche Neonatal, Network; Carnielli, Virgilio P.. - In: PEDIATRIC PULMONOLOGY. - ISSN 8755-6863. - STAMPA. - 54:5(2019), pp. 637-643. [10.1002/ppul.24265]
Oxygen saturation/FIO2 ratio at 36 weeks’ PMA in 1005 preterm infants: Effect of gestational age and early respiratory disease patterns
Correani, Alessio;Carnielli, Virgilio P.
2019-01-01
Abstract
OBJECTIVE: To assess oxygen diffusion at 36 weeks' post-menstrual age in preterm infants by means of the non-invasive oxygen saturation/fraction of inspired oxygen ratio (36w-SFR) and to identify factors associated with 36w-SFR - ie, gestational age (GA) and early respiratory disease patterns (ERP). METHODS: Retrospective analysis of prospectively collected data. SETTING: Neonatal Intensive Care Unit. PATIENTS: 1005 preterm infants born below 32 weeks' GA. INTERVENTIONS: 36w-SFR was the mean of SFR values over 24 h on the day infants reached 36 weeks' PMA. MAIN OUTCOME MEASURES: 36w-SFR. STATISTICS: descriptive statistics, univariate, and multivariate analysis to study associations of 36w-SFR, including GA and ERP. RESULTS: 36w-SFR was significantly different between infants with and without bronchopulmonary dysplasia (BPD) (371 vs 467, P < 0.001), and according to ERP (LowFIO2 466, pulmonary improvement-PI 460, pulmonary deterioration-PD 405, early persistent pulmonary deterioration-EPPD 344, P < 0.001). Significant differences were found either in BPD and in non-BPD patients according to ERP (P < 0.001). Patients without BPD had significant differences in 36w-SFR according to GA (P < 0.001), while infants with BPD and increasing GA at birth had a non-significant trend for increased 36w-SFR (P = 0.621). Factors associated with 36w-SFR were GA, being small for GA, sepsis, human milk feeding, and ERP. CONCLUSIONS: Preterm infants without BPD had a spectrum of oxygen diffusion impairment that was inversely associated with GA at birth. Infants with different patterns of ERP had significant differences in 36w-SFR.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.