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This population is at high risk of SDB because of smaller airway caliber and abnormal palatal muscle attachments predisposing them to airway obstruction of ranging severity from birth. Ventilatory responses were compared between infants with a low apnea�Chypopnea index (AHI; AHI?www.selleckchem.com/products/jq1.html high AHI had lower weight z-scores, higher number of oxygen desaturation events during sleep, but similar oxygen saturation (SpO2) nadir compared to infants with low AHI. The pattern of ventilatory response to hypoxia differed between the two groups; infants with high AHI had an earlier ventilatory decline and a blunted maximal ventilatory response to hypoxia. Infants with a high AHI use a different strategy to augment ventilation in response to hypoxia; while infants with a low AHI initially increased respiratory rate, tidal volume was the first parameter to E-64 increase in infants with high AHI. These results demonstrate that SDB in infancy is associated with altered ventilatory response to hypoxia. Pediatr Pulmonol. 2013; 48:265�C273. ? 2012 Wiley Periodicals, Inc. ""It is a matter of debate as to what extent the long-term outcome of cystic fibrosis (CF) is affected by presenting with meconium ileus (MI). We compared long-term clinical outcomes of CF children who presented with MI, to those presenting with other symptoms (non-MI) in an era of non new-born-screening (NBS). We collected annual lung function data between the ages of 8�C15 years in terms of percent predicted first second forced expired volume (FEV1%pr), percent predicted forced vital capacity (FVC%pr), and between the ages of 2�C15 years annual height and weight Z-scores (HtZ and WtZ respectively) for children attending the Royal Brompton Hospital CF clinic. To be included in the study, subjects had to have at least five pulmonary function tests and five anthropometric find more measurements recorded over this period. Thirty-eight MI and 76 non-MI subjects were compared. There were no significant differences in genotype, sex, chronic Pseudomonas infection, or pancreatic enzyme use between the two groups. The median age of diagnosis was 1 day (MI) versus 7 months (non-MI). There was a decline in spirometry and anthropometric variables over the study period for both MI and non-MI groups apart from WtZ score in the non-MI group. Mixed model analysis adjusting for potential confounders including genotype, pancreatic status, sex, chronic Pseudomonas aeruginosa lung infection, and age of diagnosis revealed no difference between the two groups in terms of lung function and growth during the time period of the study, however there was a non-significant trend for subjects presenting with MI to do better in all four parameters.