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CLINICAL TRIAL
JOURNAL ARTICLE
Laryngeal oedema in neonatal apnoea and bradycardia syndrome (a pilot study).
Early Human Development 2005 April
PURPOSE: Some preterm infants in general good health continue to present recurrent apnoeas, bradycardias and desaturations (ABD) despite usual treatments. These events may lead to transitory brain hypoxia and to further neurological injury. The purpose of this study has been to evaluate the role of laryngeal oedema in this symptomatology and to assess corticoid treatment.
METHOD: Twelve preterm babies born at a median age of 28.5 weeks (range: 26-35 weeks) already showed signs of ABD at a median age of life of 28.5 days (range: 9-80 days). Fiberoptic laryngeal endoscopy was performed on these babies at a median postconceptional age of 34 weeks (range: 31-38 weeks) to detect a possible involvement of the larynx in their ABD.
RESULTS: Each patient presented a severe laryngeal oedema compatible with potential obstructive breathing. Half of the cohort (n=6) received inhaled corticosteroids initiated with a short oral dexamethasone treatment for 3 to 5 days (group 1). All the babies improved. The other half (n=6) received only an inhaled topic corticosteroid treatment (group 2). Four of the six babies improved and two needed oral dexamethasone. Laryngoscopic endoscopy was carried out after 1 week of treatment. The picture corresponded with clinical improvement. Recurrence of ABD occurred in 3/12 (25%) of the babies after stopping dexamethasone. No immediate side effects of the procedure or the treatment were observed.
CONCLUSION: Laryngeal oedema may be a cause of ABD in preterm newborns. It may arise from oesophageal reflux and/or presence of the feeding tube. It can be diagnosed by atraumatic fiberoptic fibroscopy and successfully treated with corticosteroids.
METHOD: Twelve preterm babies born at a median age of 28.5 weeks (range: 26-35 weeks) already showed signs of ABD at a median age of life of 28.5 days (range: 9-80 days). Fiberoptic laryngeal endoscopy was performed on these babies at a median postconceptional age of 34 weeks (range: 31-38 weeks) to detect a possible involvement of the larynx in their ABD.
RESULTS: Each patient presented a severe laryngeal oedema compatible with potential obstructive breathing. Half of the cohort (n=6) received inhaled corticosteroids initiated with a short oral dexamethasone treatment for 3 to 5 days (group 1). All the babies improved. The other half (n=6) received only an inhaled topic corticosteroid treatment (group 2). Four of the six babies improved and two needed oral dexamethasone. Laryngoscopic endoscopy was carried out after 1 week of treatment. The picture corresponded with clinical improvement. Recurrence of ABD occurred in 3/12 (25%) of the babies after stopping dexamethasone. No immediate side effects of the procedure or the treatment were observed.
CONCLUSION: Laryngeal oedema may be a cause of ABD in preterm newborns. It may arise from oesophageal reflux and/or presence of the feeding tube. It can be diagnosed by atraumatic fiberoptic fibroscopy and successfully treated with corticosteroids.
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