Evidence map›Paper›PMID 34114652›Full record

ArticleAlimentary pharmacology & therapeutics2021

Characterisation of patients with supine nighttime reflux: observations made with prolonged wireless oesophageal pH monitoring.

Renske A B Oude Nijhuis, Rami Sweis, Humayra Abdul-Razakq, Jeroen M Schuitenmaker, Terry Wong, Radu-Ionut Rusu, Jac Oors, Andreas J P M Smout, Albert J Bredenoord

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Article in Alimentary pharmacology & therapeutics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Renske A B Oude NijhuisDepartment of Gastroenterology & Hepatology, Amsterdam Gastroenterology and Metabolism, University Medical Centers Amsterdam, Amsterdam, the Netherlands.ORCID 0000-0003-3678-2019
Rami SweisGI Physiology Unit, GI Services, University College London, London, UK.
Humayra Abdul-RazakqGI Physiology Unit, GI Services, University College London, London, UK.
Jeroen M SchuitenmakerDepartment of Gastroenterology & Hepatology, Amsterdam Gastroenterology and Metabolism, University Medical Centers Amsterdam, Amsterdam, the Netherlands.
Terry WongOesophageal Physiology Laboratory, Guy's and St Thomas' NHS Foundation Trust, London, UK.
Radu-Ionut RusuOesophageal Physiology Laboratory, Guy's and St Thomas' NHS Foundation Trust, London, UK.
Jac OorsDepartment of Gastroenterology & Hepatology, Amsterdam Gastroenterology and Metabolism, University Medical Centers Amsterdam, Amsterdam, the Netherlands.
Andreas J P M SmoutDepartment of Gastroenterology & Hepatology, Amsterdam Gastroenterology and Metabolism, University Medical Centers Amsterdam, Amsterdam, the Netherlands.
Albert J BredenoordDepartment of Gastroenterology & Hepatology, Amsterdam Gastroenterology and Metabolism, University Medical Centers Amsterdam, Amsterdam, the Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough nighttime reflux symptoms are common, the presence of nocturnal reflux is seldom confirmed with a standard 24 hours pH study.

aimTo study patients with supine nighttime reflux symptoms using prolonged wireless pH monitoring.

methodsIn this retrospective study, patients with typical acid reflux symptoms were studied using 96-h pH monitoring. Patients with nighttime reflux symptoms were compared to those without. Night-to-night variability and diagnostic accuracy of 24-, 48- and 72-hours pH studies compared to the 96-hours "gold standard" were evaluated.

resultsOf the 105 included patients (61.9% females; mean age 46.8 ± 14.4 years), 86 (81.9%) reported nighttime reflux symptoms, of which 67.4% had pathological supine nocturnal acid exposure in at least one night. There was high variance in night-to-night acid exposure (94% [IQR0-144]), which was larger than the variance in upright acid exposure (58% [IQR32-88]; P < 0.001). When analysing the first 24 hours of the pH study, 32% of patients were diagnosed with pathological supine nighttime acid exposure versus 51% of patients based upon the 96-hours pH-test. The diagnostic accuracy and yield improved with study duration (P < 0.001). Reflux episodes with a lower nadir pH or longer acid clearance time were more prone to provoke nightly symptoms.

conclusionsThe majority of patients with nocturnal reflux symptoms had pathological acid exposure in at least one night of the prolonged pH recording. A high night-to-night variability in acid exposure reduces the clinical value and diagnostic yield of pH monitoring limited to 24 hours. Prolonged testing is a more appropriate diagnostic tool for patients with nocturnal reflux symptoms.

Indexed as

Esophagitis, PepticGastroesophageal RefluxAdultEsophageal pH MonitoringFemaleHumansHydrogen-Ion ConcentrationMaleMiddle AgedRetrospective StudiesTime Factors

Identifiers

PMID34114652
PMCPMC8362009

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