Inhaled versus systemic corticosteroids for preventing chronic lung disease in ventilated very low birth weight preterm neonates
Bibliographic record
Abstract
Chronic lung disease (CLD) remains an important cause of mortality and morbidity in preterm infants and inflammation plays an important role in its pathogenesis. The use of inhaled corticosteroids may modulate the inflammatory process without concomitant high systemic steroid concentrations and less risk of adverse effects.To determine the effect of inhaled versus systemic corticosteroids started within the first two weeks of life on preventing CLD in ventilated very low birth weight (VLBW) infants.Randomised and quasi-randomised trials were identified by searching The Cochrane Library, MEDLINE , EMBASE , CINAHL, reference lists of published trials and abstracts published in Pediatric Research or electronically on the Pediatric Academic Societies web site in June 2007.This search was updated in June 2011 and included additional searches of Clinicaltrials.gov, Controlled-trials.com and Web of Science.Randomised or quasi-randomised clinical trials comparing inhaled versus systemic corticosteroid therapy (regardless of the dose and duration of therapy) started in the first two weeks of life in VLBW infants receiving assisted ventilation.Outcomes including CLD at 28 days or 36 weeks postmenstrual age (PMA), mortality, the combined outcome of death or CLD at 28 days or 36 weeks PMA, other pulmonary outcomes and adverse effects were evaluated. All data were analysed using RevMan 5.1. Meta-analyses were performed using relative risk (RR), risk difference (RD), and mean difference (MD) with their 95% confidence intervals (CI). If RD was significant, the numbers needed to benefit (NNTB) or to harm (NNTH) were calculated.No new trials were identified in this update. Two trials qualified for inclusion in this review. The incidence of CLD at 36 weeks PMA was increased (of borderline statistical significance) in the inhaled steroid group [RR 1.45 (95% CI 0.99 to 2.11); RD 0.11 (95% CI 0.00 to 0.21), p = 0.05, one trial, n = 278]. The incidence of CLD at 36 weeks PMA among all survivors [RR 1.34 (95% CI 0.94 to 1.90); RD 0.11 (95% CI -0.02 to 0.24), one trial, n = 206], oxygen dependency at 28 days (two trials, n = 294), death by 28 days (two trials, n = 294) or 36 weeks PMA (two trials, n = 294) and the combined outcome of death or CLD by 28 days (two trials, n = 294) or 36 weeks PMA (one trial, n = 278) did not differ significantly between the groups. The duration of mechanical ventilation was significantly longer in the inhaled steroid group as compared to the systemic steroid group [typical MD 4 days (95% CI 0.2 to 8); two trials, n = 294] as was the duration of supplemental oxygen [typical MD 11 days (95% CI 2 to 20); two trials, n = 294]. The incidence of hyperglycaemia was significantly lower in the group receiving inhaled steroids [RR 0.52 (95% CI 0.39 to 0.71); RD -0.25 (95% CI -0.37 to -0.14); one trial, n = 278; NNTB 4 (95% CI 3 to 7) to avoid one infant experiencing hyperglycaemia]. The rate of patent ductus arteriosus was increased in the group receiving inhaled steroids [RR 1.64 (95% CI 1.23 to 2.17); RD 0.21 (95% CI 0.10 to 0.33); one trial, n = 278; NNTH 5 (95% CI 3 to 10)]. No information was available on long-term neurodevelopmental outcomes.This review found no evidence that early inhaled steroids confer important advantages over systemic steroids in the management of ventilator dependent preterm infants. Neither inhaled steroids nor systemic steroids can be recommended as a part of standard practice for ventilated preterm infants. Because they might have fewer adverse effects than systemic steroids, further randomised controlled trials of inhaled steroids are needed that address risk/benefit ratio of different delivery techniques, dosing schedules and long-term effects, with particular attention to neurodevelopmental outcome.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.008 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.011 | 0.002 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".