Evidence map›Paper›PMID 31226869›Full record

ArticleSensors (Basel, Switzerland)2019

Real-Time Smart-Digital Stethoscope System for Heart Diseases Monitoring.

Muhammad E H Chowdhury, Amith Khandakar, Khawla Alzoubi, Samar Mansoor, Anas M Tahir, Mamun Bin Ibne Reaz, Nasser Al-Emadi

Registry-linked trialAbstract read
In one paragraph

Article in Sensors (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07542509 (Digital diagnoSis of Cardiac sOUNd in peDiatric Patients [DI-SOUND Study]), which is not on this map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–field-weighted citation impact
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.

NCT07542509 recruitingnot on this mapstarted 2024, after this paper: background citation

Digital diagnoSis of Cardiac sOUNd in peDiatric Patients [DI-SOUND Study]

TypeobservationalSponsorIRCCS Azienda Ospedaliero-Universitaria di BolognaRan2024 to 2027Enrolled1,000ConditionsCardiac Disease, Auscultation of Heart, Machine Learning
3 · Its place in the literature

Who cites it

38 citing papers in PubMed.

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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

7 authors.

Muhammad E H ChowdhuryDepartment of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar. mchowdhury@qu.edu.qa.ORCID 0000-0003-0744-8206
Amith KhandakarDepartment of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar. amitk@qu.edu.qa.ORCID 0000-0001-7068-9112
Khawla AlzoubiDepartment of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar. kalzoubi@qu.edu.qa.
Samar MansoorDepartment of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar. sm1204406@student.qu.edu.qa.
Anas M TahirDepartment of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar. a.tahir@qu.edu.qa.
Mamun Bin Ibne ReazDepartment of Electrical, Electronic & Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia. mamun@ukm.edu.my.
Nasser Al-EmadiDepartment of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar. alemadin@qu.edu.qa.

Funding

Qatar National Research Foundation (QNRF) UREP19-069-2-031
6 · The paper itself

Abstract

One of the major causes of death all over the world is heart disease or cardiac dysfunction. These diseases could be identified easily with the variations in the sound produced due to the heart activity. These sophisticated auscultations need important clinical experience and concentrated listening skills. Therefore, there is an unmet need for a portable system for the early detection of cardiac illnesses. This paper proposes a prototype model of a smart digital-stethoscope system to monitor patient's heart sounds and diagnose any abnormality in a real-time manner. This system consists of two subsystems that communicate wirelessly using Bluetooth low energy technology: A portable digital stethoscope subsystem, and a computer-based decision-making subsystem. The portable subsystem captures the heart sounds of the patient, filters and digitizes, and sends the captured heart sounds to a personal computer wirelessly to visualize the heart sounds and for further processing to make a decision if the heart sounds are normal or abnormal. Twenty-seven t-domain, f-domain, and Mel frequency cepstral coefficients (MFCC) features were used to train a public database to identify the best-performing algorithm for classifying abnormal and normal heart sound (HS). The hyper parameter optimization, along with and without a feature reduction method, was tested to improve accuracy. The cost-adjusted optimized ensemble algorithm can produce 97% and 88% accuracy of classifying abnormal and normal HS, respectively.

Indexed as

Monitoring, PhysiologicStethoscopesAlgorithmsAuscultationHeart DiseasesHeart SoundsHumansSignal Processing, Computer-Assisteddigital stethoscopeheart diseasesheart soundmachine learningMel frequency cepstral coefficients (MFCC) features

Identifiers

PMID31226869
PMCPMC6630694

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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.