Evidence map›Paper›PMID 30982241›Full record

ArticleJournal of neurogastroenterology and motility2019

High-resolution Anorectal Manometry in the Diagnosis of Functional Defecation Disorder in Patients With Functional Constipation: A Retrospective Cohort Study.

Yan Zhao, Xiaoyang Ren, Wen Qiao, Lei Dong, Shuixiang He, Yan Yin

Open access · diamondAbstract read
In one paragraph

Article in Journal of neurogastroenterology and motility, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

10 citing papers in PubMed, 20 citations in OpenAlex.

  1. High-resolution anorectal manometry profile in patients with chronic constipation versus control.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2026
    Article
  2. High-resolution anorectal manometry in chronic constipation-Defining dysfunction beyond diagnosis.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2026
    Article
  3. Article
  4. Observational
  5. High-Resolution Anorectal Manometry and Balloon Expulsion Test Outcomes in Functional Constipation: A Comparative Study.Medical science monitor : international medical journal of experimental and clinical research · 2024
    Article
  6. Optimizing the Utility of Anorectal Manometry for Diagnosis and Therapy: A Roundtable Review and Recommendations.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2023
    Review
  7. Article
  8. Article
  9. Article
  10. Article
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 2 institutions in 1 country.

Yan ZhaoDepartment of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China.
Xiaoyang RenDepartment of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China.
Wen QiaoDepartment of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China.
Lei DongDepartment of Gastroenterology, Second Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China.
Shuixiang HeDepartment of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China.
Yan YinDepartment of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi, China.
First Affiliated Hospital of Xi'an Jiaotong University · CNSecond Affiliated Hospital of Xi'an Jiaotong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimsHigh-resolution anorectal manometry (HRAM) has been considered a first-line diagnostic tool for functional defecation disorder. However, clinical studies on HRAM used in constipation patients are very limited and few studies have reported the characteristics of anorectal pressure in Chinese patients. The aim of this study is to investigate the characteristics of motility data in a cohort of Chinese patients with functional constipation.

methodsA total of 82 consecutive patients with functional constipation who underwent a standardized HRAM were retrospectively enrolled in this study. The functional defecation disorder was classified into Rao's types.

resultsThe mean age of 82 patients was 51 years (range, 16-83 years). Indications for anorectal manometry were functional constipation for all patients. The mean resting pressure was 69.2 ± 21.2 mmHg (range, 24.5-126.9 mmHg). The mean maximum squeezing pressure was 198.4 ± 75.6 mmHg (range, 54.2-476.9 mmHg). The mean length of the anal high pressure zone was 3.4 ± 1.0 cm (range, 0.6-4.9 cm). Sixty (73.2%) patients were diagnosed as functional defecation disorder. In attempted defecation, type I was most common (n = 24), followed by type II (n = 12), type III (n = 11), and type IV (n = 13) that were present on HRAM according to Rao's classification. In all 60 patients with functional defecation disorder, 37 were women and 23 were men. Men were significantly more likely than women to have functional defecation disorder (92.0% vs 64.9%,

conclusionHRAM could be used as a test for the diagnosis of functional defecation disorder and functional defecation disorder is common in Chinese patients with functional constipation.

Indexed as

DefecationHumansManometryPressure

Identifiers

PMID30982241
PMCPMC6474701
OpenAlexW2940291643

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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.