Evidence map›Paper›PMID 28550489›Full record

ReviewDigestive diseases and sciences2017

Impedance-pH Monitoring for Diagnosis of Reflux Disease: New Perspectives.

Marzio Frazzoni, Nicola de Bortoli, Leonardo Frazzoni, Salvatore Tolone, Vincenzo Savarino, Edoardo Savarino

Abstract readReview
PubMed Publisher
In one paragraph

Review in Digestive diseases and sciences, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% of its field
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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

48 citing papers in PubMed, 2 syntheses or guidelines pooled it, 99 citations in OpenAlex.

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  19. Rethinking about the definition of GERD.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 5 institutions in 2 countries.

Marzio FrazzoniDigestive Pathophysiology Unit, Baggiovara Hospital, Viale Giardini 1355, 41100, Modena, Italy. marziofrazzoni@gmail.com.ORCID 0000-0002-8608-1563
Nicola de BortoliDepartment of Translational Research and New Technology in Medicine and Surgery, University of Pisa, Pisa, Italy.
Leonardo FrazzoniDigestive Pathophysiology Unit, Baggiovara Hospital, Viale Giardini 1355, 41100, Modena, Italy.
Salvatore ToloneGeneral and Bariatric Surgery Unit, Department of Surgery, 2nd University of Napoli, Naples, Italy.
Vincenzo SavarinoGastroenterology Unit, Department of Internal Medicine, University of Genova, Genoa, Italy.
Edoardo SavarinoGastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padova, Padua, Italy.
National Operating Committee on Standards for Athletic Equipment · USUniversity of Bologna · ITUniversity of Genoa · ITUniversity of Padua · ITUniversity of Pisa · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Heartburn is the most specific symptom of gastroesophageal reflux disease (GERD). In clinical practice, heartburn relief by a proton pump inhibitor (PPI) trial does suffice to confirm GERD. However, an objective diagnosis of GERD is required before anti-reflux endoscopic or surgical interventions, independently from PPI response. Thus, since normal findings at upper endoscopy are detected in the majority of patients with heartburn, reflux monitoring is often required. When traditional catheter-based or wireless pH tests are used, reflux episodes are conventionally identified by pH drops below 4.0 units. Combined impedance-pH monitoring has the advantage to provide a comprehensive assessment of both physical and chemical properties of refluxate and the distinction between acid and weakly acidic refluxes, both proven to cause heartburn. Unfortunately, the conventional impedance-pH parameters, namely acid exposure time and number of reflux events, are characterized by suboptimal diagnostic sensitivity, and the reliability of symptom-reflux association indexes remains questionable. Therefore, novel impedance parameters, namely the post-reflux swallow-induced peristaltic wave (PSPW) index and the mean nocturnal baseline impedance (MNBI), have recently been proposed in order to achieve a better diagnostic yield. In fact, they proved to be highly accurate in distinguishing reflux-related from reflux-unrelated heartburn, off- as well as on-PPI therapy. Currently, manual review of impedance-pH tracings is needed because of the modest accuracy of available software tools for automated analysis. PSPW index and MNBI are highly applicable and reproducible, and their calculation requires a few additional minutes during the manual review of impedance-pH tracings. So far, we believe that PSPW index and MNBI are ready for prime time and should become part of the standard analysis of impedance-pH tracings for GERD diagnosis in patients with endoscopy-negative heartburn.

Indexed as

Electric ImpedanceEsophageal pH MonitoringEsophagusGastroesophageal RefluxHeartburnHumansHydrogen-Ion ConcentrationPeristalsisProton Pump InhibitorsReproducibility of ResultsProton Pump InhibitorsEsophageal baseline impedanceEsophageal chemical clearanceGERDImpedance-pH monitoringNERDPPIPSPW index

Identifiers

PMID28550489
OpenAlexW2617797250

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.