RESUMEN
OBJECTIVE: To determine whether intermittent hypoxia (IH) persisting after 36 weeks postmenstrual age (PMA) can be attenuated using caffeine doses sufficient to maintain caffeine concentrations >20 µg ml-1. STUDY DESIGN: Twenty-seven infants born <32 weeks were started on caffeine citrate at 10 mg kg-1 day-1 when clinical caffeine was discontinued. At 36 weeks PMA, the dose was increased to 14 or 20 mg kg-1 day-1 divided twice a day (BID) to compensate for progressively increasing caffeine metabolism. Caffeine concentrations were measured weekly. The extent of IH derived from continuous pulse oximetry was compared to data from 53 control infants. RESULT: The mean (s.d.) gestational age of enrolled infants was 27.9±2 weeks. Median caffeine levels were >20 µg ml-1 on study caffeine doses. IH was significantly attenuated through 38 weeks PMA compared with the control group. CONCLUSION: Caffeine doses of 14 to 20 mg kg-1 day-1 were sufficient to maintain caffeine concentrations >20 µg ml-1 and reduce IH in preterm infants at 36 to 38 weeks PMA.
Asunto(s)
Cafeína/administración & dosificación , Estimulantes del Sistema Nervioso Central/administración & dosificación , Citratos/administración & dosificación , Hipoxia/prevención & control , Enfermedades del Prematuro/prevención & control , Adulto , Cafeína/análisis , Cafeína/metabolismo , Estudios de Casos y Controles , Estimulantes del Sistema Nervioso Central/análisis , Estimulantes del Sistema Nervioso Central/metabolismo , Citratos/análisis , Citratos/metabolismo , Esquema de Medicación , Femenino , Edad Gestacional , Humanos , Hipoxia/epidemiología , Recién Nacido , Recien Nacido Prematuro , Enfermedades del Prematuro/epidemiología , Masculino , Oximetría , Estudios ProspectivosRESUMEN
OBJECTIVES: To explore adolescent fatherhood from the perspectives of teen fathers, teen mothers, paternal grandmothers (PGMs), and maternal grandmothers (MGMs). To identify perceived barriers to and recommendations for the enhancement of teen father participation in child rearing. METHODS: A total of 61 teen parents participated in the design of a structured interview. A community-based sample of 173 teen fathers, 167 teen mothers, 76 PGMs, and 79 MGMs were interviewed by teenage assistants. Multiple logistic regression analysis using maximum likelihood estimation and the best subset algorithm identified barriers most predictive of paternal uninvolvement in child rearing. RESULTS: Fifty-four percent of teen fathers and 70% of partners of teen mothers' met the definition of involvement in child rearing. Disinterest in child rearing most consistently predicted uninvolvement. Fathers were less likely than mothers to report paternal disinterest as a barrier and more likely to attribute their lack of involvement to resistance from mothers and MGMs (p < 0.05). The best model predicting paternal involvement from the fathers' perspective included paternal disinterest [odds ration (OR) = 0.42, confidence interval (CI) = 0.19-0.92] and age (OR = 0.74, CI = 0.56-0.97). The best model from the mothers' perspective included paternal disinterest (OR = 0.16, CI = 0.07-0.36) and lack of time (OR = 0.31, CI = 0.15-0.91). Of those fathers who cited disinterest, there was an association with lack of money (p = 0.002) and lack of knowledge of child care (p = 0.069. While fathers and mothers disagreed on several interventions, they agreed (82% and 95%, respectively) that availability of jobs would promote paternal involvement. CONCLUSIONS: Most teen fathers in this study were involved and interested in child rearing. A young father's financial insecurity or confusion about child care was most likely to lead to a stated disinterest, and that disinterest predicted uninvolvement.
PIP: A community-based sample of 173 teen fathers, 167 teen mothers, 76 paternal grandmothers, and 79 maternal grandmothers was interviewed by teenage assistants to explore adolescent fatherhood from a range of differing perspectives. 54% of teen fathers and 70% of partners of teen mothers met the definition of involvement in child rearing. Disinterest in child rearing most consistently predicted uninvolvement. Fathers were less likely than mothers to report paternal disinterest as a barrier and more likely to attribute their lack of involvement to resistance from mothers and maternal grandmothers. The best model predicting paternal involvement from the fathers' perspective included paternal disinterest and age, while the best model from the mothers' perspective included paternal disinterest and lack of time. Of those fathers who cited disinterest, there was an association with lack of money and lack of knowledge of child care. While fathers and mothers disagreed upon several interventions, they agreed that an availability of jobs would promote paternal involvement.