Evidence map›Paper›PMID 31211145›Full record

Trial reportBioMed research international2019

Modified Method of Contrast Transthoracic Echocardiography for the Diagnosis of Patent Foramen Ovale.

Enfa Zhao, Yajuan Du, Hang Xie, Yushun Zhang

2 registry-linked trialsOpen access · hybridAbstract readClinical Trial
In one paragraph

Trial report in BioMed research international, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.1field-weighted citation impact, top 12% 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.

NCT02777359 phase2unknown statusnot on this map

Precutaneous High Risk Patent Foramen Ovale to Treat Migraine Headaches:A Prospective,Multicenter,Randomized,Controlled Trial

TypeinterventionalSponsorFirst Affiliated Hospital Xi'an Jiaotong UniversityRan2017 to 2018Enrolled100ConditionsPatent Foramen OvaleArmsthe transcatheter closure of PFO
NCT06670781 narecruitingnot on this mapstarted 2025, after this paper: background citation

Standardized Goal-Directed vs. Self-Directed Valsalva Maneuver for the Assessment of Patent Foramen Ovale

TypeinterventionalSponsorOttawa Heart Institute Research CorporationRan2025 to 2026Enrolled488ConditionsStrokeArmsExperimental: Intervention arm: Goal-Directed Valsalva maneuver, Control - standard of care: Self-Directed Valsalva maneuver
3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Diagnostic Blind Spots in Patent Foramen Ovale Detection: Lessons From Femoral Vein Contrast Studies.Journal of the Society for Cardiovascular Angiography & Interventions · 2026
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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

4 authors at 1 institution in 1 country.

Enfa ZhaoDepartment of Structural Heart Disease, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
Yajuan DuDepartment of Structural Heart Disease, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.ORCID 0000-0002-9132-761X
Hang XieDepartment of Structural Heart Disease, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
Yushun ZhangDepartment of Structural Heart Disease, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.ORCID 0000-0002-6395-2768
First Affiliated Hospital of Xi'an Jiaotong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo compare the sensitivity and specificity of modified and traditional methods of contrast echocardiography of the right portion of the heart in patients with a suspicion of patent foramen ovale (PFO).

methodsThe study population consisted of 506 patients with high clinical suspicion of PFO. The traditional Valsalva maneuver consists of expiration against a closed glottis after a full inspiration. A modified Valsalva maneuver was performed with a handmade pressure monitoring device, which measured pressure during performance of the Valsalva maneuver. Modified and traditional methods of contrast echocardiography were performed among all patients. Contrast transesophageal echocardiography (TEE) was regarded as the gold standard.

resultsA total of 279 patients with PFO were confirmed by TEE. 259 cases (sensitivity: 92.83%) were detected by a modified method of contrast echocardiography of the right portion of the heart, while 234 cases were detected using the traditional method (sensitivity: 83.87%). The sensitivity of modified contrast echocardiography of the right portion of the heart was significantly higher than that of the traditional method (92.83% vs. 83.87%,

conclusionsModified contrast echocardiography of the right portion of the heart yielded a higher sensitivity than the traditional method, which contributed to the diagnosis of cardiac PFO. The research was a part of a register study (https://register.clinicaltrials.gov/ ClinicalTrials ID: NCT02777359).

Indexed as

EchocardiographyAdultContrast MediaFemaleForamen Ovale, PatentHumansMaleMiddle AgedRetrospective StudiesValsalva ManeuverContrast Media

Identifiers

PMID31211145
PMCPMC6532309
OpenAlexW2943843390

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.