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Related Experiment Video

Updated: Jun 6, 2026

Systematic Endobronchial Ultrasound - The Six Landmarks Approach

Systematic Endobronchial Ultrasound - The Six Landmarks Approach

Published on: August 11, 2023

Portable digital esophageal stethoscope system.

J Y Shin¹, S W Lim, Y C Kim

¹Department of Biomedical Engineering, College of Medicine, Chungbuk, National University, Cheongju, South Korea. lion0344@chungbuk.ac.kr

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|November 25, 2010

Summary

This summary is machine-generated.

A new portable digital esophageal stethoscope (PDES) precisely measures and analyzes heart sounds and murmurs. This device offers clear, real-time cardiac data, enhancing patient safety during anesthesia.

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Area of Science:

Biomedical Engineering
Cardiology
Anesthesiology

Background:

Heart sounds offer crucial myocardial contractility and blood vessel information unobtainable via ECG.
Stethoscopy of heart sounds is vital in anesthesiology for cardiac monitoring and preventing intraoperative accidents.
Precise, objective measurement and analysis systems for heart sounds and murmurs are needed.

Purpose of the Study:

To develop a portable digital esophageal stethoscope (PDES) for objective quantification of heart sounds and murmurs.
To design a PDES system for precise measurement and analysis of heart sound and murmur data.
To create a device that enhances cardiac monitoring during anesthesia.

Main Methods:

Designed and developed a portable digital esophageal stethoscope (PDES).
Integrated an esophageal sensor to capture heart sound data.
Developed self-developed software (Heart Sound 1.0) for real-time display of amplitude and waveform on a terminal or PC.
Included body temperature measurement capability.

Main Results:

The PDES system stably produced real-time data on heart sound and murmur amplitude and waveform.
Auditory auscultation via headphones provided clear heart sounds without external noise interference.
The PDES successfully complemented traditional esophageal stethoscopes by adding digital display and measurement capabilities.

Conclusions:

The developed PDES enables continuous, objective stethoscopy of heart sounds and murmurs during operations.
This device provides valuable heart sound data, potentially advancing research in cardiac diagnostics.
The PDES enhances patient safety in anesthesiology by offering detailed, real-time cardiac information.