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dc.contributor.authorChang, AB
dc.contributor.authorConnor, FL
dc.contributor.authorPetsky, HL
dc.contributor.authorEastburn, MM
dc.contributor.authorLewindon, PJ
dc.contributor.authorHall, C
dc.contributor.authorWilson, SJ
dc.contributor.authorKatelaris, PH
dc.date.accessioned2017-12-19T01:35:53Z
dc.date.available2017-12-19T01:35:53Z
dc.date.issued2011
dc.identifier.issn0003-9888
dc.identifier.doi10.1136/adc.2009.177733
dc.identifier.urihttp://hdl.handle.net/10072/172807
dc.description.abstractObjective: There are no objective ambulatory studies on the temporal relationship between reflux and cough in children. Commercial pHmetry loggers have slow capture rates (0.25 Hz) that limit objective quantification of reflux and cough. The authors aimed to evaluate if there is a temporal association between cough and acid pH in ambulatory children with chronic cough. Design, setting and patients: The authors studied children (aged <14 years) with chronic cough, suspected of acid reflux and considered for pHmetry using a specifically built ambulatory pHmetry–cough logger that enabled the simultaneous ambulatory recording of cough and pH with a fast (10 Hz) capture rate. Main outcome measures: Coughs within (before and after) 10, 30, 60 and 120 s of a reflux episode (pH<4 for >0.5 s). Results: Analysis of 5628 coughs in 20 children. Most coughs (83.9%) were independent of a reflux event. Cough–reflux (median 19, IQR 3–45) and reflux–cough (24.5, 13–51) sequences were equally likely to occur within 120 s. Within the 10 and 30 s time frame, reflux–cough (10 s=median 2.5, IQR 0–7.25; 30 s=6.5, 1.25–22.25) sequences were significantly less frequent than reflux–no cough (10 s=27, IQR 15–65; 30 s=24.5, 14.5–55.5) sequences, (p=0.0001 and p=0.001, respectively). No differences were found for 60 and 120 s time frame. Cough–reflux sequence (median 1.0, IQR 0–8) within 10 s was significantly less (p=0.0001) than no cough–reflux sequences (median 29.5, 15–67), within 30 s (p=0.006) and 60 s (p=0.048) but not within 120 s (p=0.47). Conclusions: In children with chronic cough and suspected of having gastro-oesophageal reflux disease, the temporal relationship between acid reflux and cough is unlikely causal.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherBMJ Group
dc.relation.ispartofpagefrom468
dc.relation.ispartofpageto472
dc.relation.ispartofissue5
dc.relation.ispartofjournalArchives of Disease in Childhood
dc.relation.ispartofvolume96
dc.subject.fieldofresearchPaediatrics
dc.subject.fieldofresearchClinical Sciences
dc.subject.fieldofresearchPaediatrics and Reproductive Medicine
dc.subject.fieldofresearchPublic Health and Health Services
dc.subject.fieldofresearchcode111403
dc.subject.fieldofresearchcode1103
dc.subject.fieldofresearchcode1114
dc.subject.fieldofresearchcode1117
dc.titleAn objective study of acid reflux and cough in children using an ambulatory pHmetry-cough logger
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorPetsky, Helen


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