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Electrocardiogram

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...

Holter Monitor: 24-Hour Monitoring

Holter Monitor: 24-Hour Monitoring

Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...

Instrumentation Amplifier

Instrumentation Amplifier

An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...

Pulse rhythm

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...

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Related Experiment Video

Updated: Jun 26, 2026

A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program

A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program

Published on: April 19, 2019

Performance evaluation of cellular phone network based portable ECG device.

Joo-Hyun Hong¹, Eun-Jong Cha, Tae-Soo Lee

¹Department of Biomedical Engineering, College of Medicine, Chungbuk National University, Cheongju, South Korea. brood75@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

|January 24, 2009

Summary

A new portable ECG device using cellular networks was developed. This device accurately monitors patients unobtrusively during daily activities, ensuring reliable data transmission for remote patient care.

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Area of Science:

Biomedical Engineering
Telemedicine
Wearable Technology

Background:

Remote patient monitoring is crucial for managing chronic conditions.
Existing electrocardiogram (ECG) devices can be cumbersome for daily use.
Need for unobtrusive, accessible, and reliable patient monitoring solutions.

Purpose of the Study:

To develop and evaluate a portable ECG device utilizing cellular phone network technology.
To assess the accuracy, reliability, operability, and applicability of the device during daily life.
To validate the device's capability for unobtrusive remote patient monitoring.

Main Methods:

Developed a portable ECG device integrated with cellular network capabilities.
Conducted comparative accuracy tests against a reference Biopac device for R-R intervals.
Evaluated data transmission reliability using a patient simulator during simulated emergency events.
Assessed real-world performance and data transmission accuracy during five types of daily motion and two types of events.

Main Results:

The developed portable ECG device demonstrated accuracy comparable to the reference device in measuring R-R intervals.
Reliable data transmission to a remote server was confirmed under simulated emergency conditions.
The device maintained accuracy and reliability during various daily activities and simulated events.
Successful acquisition and comparison of biomedical and motion signals validated device performance.

Conclusions:

The cellular phone network-based portable ECG device is accurate and reliable for patient monitoring.
The device offers a practical and unobtrusive solution for continuous remote patient care.
This technology has significant potential to improve patient management and healthcare accessibility.