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Definition of nocturnal gastroesophageal reflux for studies on respiratory diseases.

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Authors
Emilsson, Össur Ingi
Benediktsdóttir, Bryndís
Ólafsson, Ísleifur
Cook, Elizabeth
Júlíusson, Sigurður
Berg, Sören
Nordang, Leif
Björnsson, Einar Stefán
Guðlaugsdóttir, Sunna
Guðmundsdóttir, Anna Soffía
Janson, Christer
Gislason, Thorarinn
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Issue Date
2016

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Citation
Definition of nocturnal gastroesophageal reflux for studies on respiratory diseases. 2016, 51 (5):524-30 Scand. J. Gastroenterol.
Abstract
Nocturnal gastroesophageal reflux (nGER) has been associated with respiratory diseases. Our aim was to study a questionnaire method to identify nGER subjects with respiratory involvement in a general population.
A subgroup of Icelandic participants in the European Community Respiratory Health Survey III (ECRHS III) reporting symptoms of nGER (n  =  48) as well as age and gender paired controls (n  =  42) were studied further by a structured interview, questionnaires, laryngeal fibrescopy, and exhaled breath condensate. A subgroup underwent 24-h oesophageal pH impedance (24-h MII-pH) measurements. Symptoms of nGER were assessed with a modified version of the reflux disease questionnaire (RDQ), where symptoms were divided into daytime and nocturnal. A report of nGER both at baseline and at follow-up was defined as persistent nGER.
Participants reporting persistent nGER had significantly more signs of laryngopharyngeal reflux according to the reflux finding score than those without nGER (Mean ± SD: 5.1 ± 2.3 vs. 3.9 ± 2.2, p  =  0.02). Of the 16 persistent nGER subjects that underwent 24-h MII-pH, 11 had abnormal gastroesophageal reflux, but none of three control subjects (69% vs. 0%). Pepsin was more commonly found in exhaled breath condensate in the nGER group (67% vs. 45%, p  =  0.04).
Participants with nGER symptoms at least once a month, reported on two occasions, had a high level of positive 24-h MII-pH measurements, laryngeal inflammation and pepsin in exhaled breath condensate. This nGER definition identified a representable group for studies on nGER and respiratory diseases in a general population.
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Additional Links
http://dx.doi.org/ 10.3109/00365521.2015.1124284
http://www.tandfonline.com/doi/pdf/10.3109/00365521.2015.1124284
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Archived with thanks to Scandinavian journal of gastroenterology
ae974a485f413a2113503eed53cd6c53
10.3109/00365521.2015.1124284
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English Journal Articles (Peer Reviewed)

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