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PubMed2000

Nebulized racemic epinephrine for extubation of newborn infants.

BACKGROUND: Following a period of mechanical ventilation, post-extubation upper airway obstruction can occur in newborn infants, especially after prolonged, traumatic or multiple intubations. The subsequent increase in upper airway resistance may lead to respiratory insufficiency and failure of extubation. The vasoconstrictive properties of epinephrine, and its proven efficacy in the treatment of croup in infants, has led to the routine use of inhaled nebulised epinephrine immediately post-extubation in some neonatal units. It is also recommended for neonates with post-extubation tracheal obstruction and stridor in neonatal and respiratory textbooks and reviews. OBJECTIVES: The primary objective was to assess whether nebulised epinephrine administered immediately after extubation in neonates weaned from IPPV decreases the need for subsequent additional respiratory support. SEARCH STRATEGY: Searches were made of Medline (MeSH search terms 'epinephrine' and 'exp infant, newborn'), the Oxford Database of Perinatal trials, expert informants and journal hand searching mainly in the English language, expert informant searches in the Japanese language by Prof. Ogawa, previous reviews including cross references, abstracts, and conference and symposia proceedings. SELECTION CRITERIA: All randomised and quasi-randomised control trials in which nebulised epinephrine was compared with placebo immediately post-extubation in newborn infants who have been weaned from IPPV and extubated, with regard to clinically important outcomes (i.e. need for additional respiratory support, increase in oxygen requirement, respiratory distress, stridor or the occurrence of side effects). DATA COLLECTION AND ANALYSIS: No studies met our criteria for inclusion in this review. MAIN RESULTS: No studies were identified which looked at the effect of inhaled nebulised epinephrine on clinically important outcomes in infants being extubated. REVIEWER'S CONCLUSIONS IMPLICATIONS FOR PRACTICE: There is no evidence either supporting or refuting the use of inhaled nebulised racemic epinephrine in newborn infants. IMPLICATIONS FOR RESEARCH: randomised controlled trials are needed comparing inhaled nebulised racemic epinephrine with placebo in neonates post-extubation. This should be looked at both as a routine treatment post-extubation and as specific treatment for post-extubation upper airway obstruction. Study populations should include the group of infants at highest risk for upper airway obstruction from mucosal swelling because of their small glottic and sub-glottic diameters (ie those infants with birthweights less than 1000 grams).

Administration, Inhalation↗
PubMed2000

Nasal continuous positive airways pressure immediately after extubation for preventing morbidity in preterm infants.

BACKGROUND: Preterm infants being extubated following a period of intermittent positive pressure ventilation via an endotracheal tube are at risk of developing respiratory failure as a result of apnea, respiratory acidosis and hypoxia. Nasal continuous positive airway pressure appears to stabilise the upper airway, improve lung function and reduce apnea and may therefore have a role in facilitating extubation in this population. OBJECTIVES: In preterm infants having their endotracheal tube removed following a period of intermittent positive pressure ventilation (IPPV), does management with nasal continuous positive airways pressure (NCPAP) lead to an increased proportion remaining free of additional ventilatory support, compared to extubation directly to headbox oxygen? SEARCH STRATEGY: Searches were made of the Oxford Database of Perinatal Trials, Medline, previous reviews including cross references, abstracts of conferences and symposia proceedings, expert informants, journal handsearching mainly in the English language and expert informant searches in the Japanese language by Prof. Ogawa. SELECTION CRITERIA: All trials utilising random or quasi-random patient allocation, in which NCPAP (delivered by any method) was compared with headbox oxygen for post-extubation care were included. Methodological quality was assessed independently by the two authors. DATA COLLECTION AND ANALYSIS: Data were extracted independently by the two authors. Prespecified subgroup analysis to determine the impact of different levels of NCPAP, differences in duration of IPPV and use of aminophylline were also performed using the same package. MAIN RESULTS: Nasal CPAP, when applied to preterm infants being extubated following IPPV, reduces the incidence of adverse clinical events (apnea, respiratory acidosis and increased oxygen requirements) indicating the need for additional ventilatory support. A reduction in the incidence of chronic lung disease at 28 days of age is also seen in the group extubated to NCPAP. REVIEWER'S CONCLUSIONS IMPLICATIONS FOR PRACTICE: nasal CPAP is effective in preventing failure of extubation and reducing oxygen use at 28 days of life in preterm infants following a period of endotracheal intubation and IPPV. Implication for research: further definition of the patient gestational age and weight groups in whom these results apply is required. Optimal levels of NCPAP as well as methods of administration remain to be determined.

Humans↗