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PubMed2000

Chest physiotherapy for preventing morbidity in babies being extubated from mechanical ventilation.

BACKGROUND: This section is under preparation and will be included in the next issue. OBJECTIVES: To assess the effects of active chest physiotherapy on babies being extubated from mechanical ventilation for neonatal respiratory failure. SEARCH STRATEGY: The standard search strategy for the Neonatal Review Group was used as outlined in the Cochrane Handbook in the Cochrane Library. SELECTION CRITERIA: All trials utilising random or quasi-random patient allocation, in which active chest physiotherapy was compared with non-active techniques (eg positioning and suction alone) or no intervention in the periextubation period. The methodological quality of each trial was assessed by two independent authors. DATA COLLECTION AND ANALYSIS: Data were extracted independently by two authors. The data were analysed from 3 trials. Subgroup analysis was performed on different treatment frequencies. MAIN RESULTS: In this review of 3 small trials, 2 of which were carried out 10 & 20 years ago, no clear benefit of periextubation active chest physiotherapy can be seen. Active chest physiotherapy did not significantly reduce the rate of postextubation lobar collapse (RR 0.69;0.33,1.45), though a reduction in the use of reintubation was shown in the overall analysis (RR 0.24;0.08,0.75). Subgroup analysis of different treatment frequencies showed the same effect with more frequent treatment (1 & 2 hourly) but showed a trend to increased lobar collapse, and no reduction in the use of reintubation, with less frequent treatment (4 hourly). There is insufficient information to assess other important short and long term outcomes, including adverse effects. REVIEWER'S CONCLUSIONS: The results of this review do not allow development of clear guidelines for clinical practice. Caution is required when interpreting the possible positive effects of chest physiotherapy of a reduction in the use of reintubation and the trend for decreased post-extubation atelectasis as the numbers of babies studied are small, the results are not consistent across trials, data on safety are insufficient, and applicability to current practice may be limited.

Humans↗
PubMed2000

Intravenous dexamethasone for extubation of newborn infants.

BACKGROUND: Endotracheal tubes are foreign bodies that may injure the upper airway causing laryngeal edema. This in turn may result in failure of extubation in preterm infants. Corticosteroids have been used prophylactically to reduce upper airway obstruction and facilitate extubation. OBJECTIVES: In newborn infants having their endotracheal tube removed following a period of intermittent positive pressure ventilation (IPPV), what are the effects of intravenous corticosteroids on the incidence of endotracheal reintubation, stridor, atelectasis and adverse side effects? SEARCH STRATEGY: Searches were made of the Oxford Database of Perinatal Trials, Medline (MeSH search terms "dexamethasone", "extubat*" and "exp infant, newborn"), 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. Y. Ogawa. SELECTION CRITERIA: Trials were included which used random or quasi-random patient allocation, and which compared intravenous steroids given immediately prior to a planned extubation with placebo. DATA COLLECTION AND ANALYSIS: Data were extracted independently by the two authors and analysed in Revman for all trials. Prespecified subgroup analyses were performed to examine differences in response between infants at high risk for upper airway edema and those receiving routine prophylaxis prior to extubation. MAIN RESULTS: Administration of dexamethasone prior to extubation significantly reduced the need for reintubation of the trachea. This result applies to both the high risk group and to the total population of infants enrolled. However, the incidence of extubation failure was zero in the trial that attempted to exclude infants at high risk of airway edema. The side effects of higher blood sugar levels and glycosuria were found in the 2 trials where these were sought. REVIEWER'S CONCLUSIONS: Implications for practice Dexamethasone reduces the need for endotracheal reintubation of neonates after a period of IPPV. In view of the lack of effect in low risk infants and the documented and potential side effects, it appears reasonable to restrict its use to infants at increased risk for airway edema and obstruction, such as those who have received repeated or prolonged intubations. Implications for research Issues of dosage and applicability to the extremely low birthweight population could be addressed in future trials. Longer term outcomes such as chronic lung disease, duration of assisted ventilation and length of hospital stay should also be examined.

Anti-Inflammatory Agents↗