eMurmur ID - Clinical Performance Evaluation

CSD Labs GmbH120 enrolled

Overview

The differentiation between innocent and pathologic murmurs through traditional auscultation can often be challenging, which in the end makes the diagnosis strongly dependent on the clinitians experience and clinical expertise. With the development of technology it is now possible to help diagnose heart murmurs using computer aided auscultation systems (CAA). eMurmur ID is an investigational CAA system (not FDA cleared) and the investigators hypothesize that it can distinguish between AHA class I (pathologic murmurs) and AHA class III heart sounds (innocent murmurs and/or no murmurs) with a sensitivity and specificity not worse compared to a similar FDA cleared CAA system on market.

Study Type

OBSERVATIONAL

Enrollment

120

Conditions

Heart Murmurs Pathologic Murmurs Innocent Murmurs Congenital Heart Defect Systolic Murmurs Diastolic Murmurs

Interventions

Automated Heart Murmur Detection AIDEVICE

Automated AI algorithm-based analysis of digital heart sound recordings to detect and classify heart murmurs. Heart sound recordings were fully blinded before undergoing one-time automated analysis. AI algorithm results for each recording include: AHA classification (Class I (pathologic heart murmur) versus class III (innocent heart murmur or no heart murmur), murmur timing, murmur grade, heart rate and S1/S2 identification.

Eligibility

Sex: ALLMin age: 1 DayHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * All age groups of patients will be included from 1day old * Patients who are being followed for known congenital heart disease and are returning for follow up * Patients referred for a suspected heart murmur Exclusion Criteria: * Mismatch between the expert physician's diagnosis (auscultation based) and the diagnosis resulting from echocardiography (independently read by a cardiologist blinded to the auscultation results). Note: both, the expert physician and echocardiography results must independently reach the same diagnosis, which is then accepted as the gold standard reference diagnosis to which both devices are compared to. This is necessary because not every pathology visible on an echocardiogram causes an audible murmur, and not every murmur heard by a medical expert might correlate to pathology. * Patient whose behaviour does not allow for a standard auscultation by the physician (e.g. a screaming fit).

Outcomes

Primary Outcomes

eMurmur ID sensitivity and specificity

The primary endpoints of the study are sensitivity and specificity. The clinical reference gold standard diagnosis is defined as expert physicians' diagnosis confirmed by independently interpreted echocardiogram diagnosis. True positive (TP), true negative (TN), false positive (FP) and false negative (FN) will be determined via comparison of the heart murmur classification results with the clinical gold standard (echocardiogram) diagnosis.

Time frame: 1 day