ABSTRACT
BACKGROUND: Inhaled nitric oxide (iNO), commonly used for hypoxic neonates, may react with haemoglobin to form methaemoglobin (MetHb). MetHb monitoring during iNO therapy has been questioned since low doses of iNO are used. AIM: To evaluate the incidence of and identify risk factors associated with elevated MetHb in neonates treated with iNO. METHODS: Neonates who were treated with iNO and had at least one MetHb measurement were included. Demographic characteristics and methods of iNO administration (dosage, duration) at the time of each MetHb measurement were analysed. RESULTS: Four hundred and fifty-two MetHb measurements from 81 premature and 82 term and near-term infants were analysed. MetHb was above 5% in one-term infant, and between 2.5-5% in 16 infants. A higher maximum dose of iNO (22.7 vs 17.7 p.p.m.), but not gestational age, was a significant risk factor for elevated MetHb. Significantly higher oxygen levels (75.5% vs 51.7%) were associated with higher MetHb in term infants. Preterm infants had no risk for high MetHb when iNO was kept below 8 p.p.m. These data suggest the possibility of limiting blood withdrawal when low doses iNO are used. CONCLUSION: High MetHb is exceptional in neonates treated with low dose iNO. Associated risk factors are related to high iNO dose and the simultaneous use of high concentrations of oxygen.
Subject(s)
Methemoglobinemia/epidemiology , Nitric Oxide/administration & dosage , Administration, Inhalation , Asphyxia Neonatorum/therapy , Humans , Infant, Newborn , Infant, Premature , Methemoglobin/analysis , Monitoring, Physiologic , Oxidative Stress , ROC Curve , Retrospective Studies , Risk FactorsABSTRACT
UNLABELLED: Resuscitation of infants who are born at the threshold of viability remains highly controversial. The purpose of our study was to evaluate the French neonatologists' attitude toward the birth of an infant at less than 26 weeks' gestation (WG). METHOD: This article reports the results of a survey sent by the Internet to one of the neonatologists in each of the NICUs in France. The answers showed the different attitudes at the time of the birth of an extremely premature infant born less than 26 WG. RESULTS: The respondents represented 57 % of the original sample. None resuscitates an infant born between 22 WG+0 days and 22 WG+6 days. During the 23rd WG, the majority answer (90 %) was "Resuscitation is never undertaken". During the 24th WG, the main answer (29 %) was "Resuscitation is undertaken if neonatal adaptation is sufficient". During the 25th WG, several answers were given, but only 6 % chose "Resuscitation is never undertaken". CONCLUSION: Analyzing the survey's answers indicates that the decision of whether to resuscitate these premature infants at the threshold of viability must be adjusted not only by gestational age, but also by many other factors.
Subject(s)
Attitude of Health Personnel , Infant, Premature , Neonatology/methods , Physicians/psychology , France , Health Surveys , Humans , Infant, Newborn , Resuscitation , Resuscitation Orders , Surveys and Questionnaires , WorkforceABSTRACT
The quality of noninvasive ventilation in pediatrics is interface-dependent. Several types of interfaces are currently available: nasal and oral masks, nasal pillows and helmets. Despite material improvements in material design, shape, size and components, interfaces are still not adapted for most children. The ideal interface must fit the child's characteristics and the disease requirements. For instance, a nasal canula is recommended for infants younger than 3 months of age. If necessary, nasal masks can be used as oronasal masks. Repeated and careful evaluations are indicated to ensure interface adequacy and to detect cutaneous injuries and facial deformities. Training is required for medical and paramedical personnel. Pediatrics studies, comparing interfaces, are needed to build evidence-based recommendations.
