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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

927
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...
927
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

654
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Related Experiment Video

Updated: Sep 12, 2025

Simultaneous Electrocardiography Recording and Invasive Blood Pressure Measurement in Rats
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Camera-Based Photoplethysmography for Measuring Heartbeat Intervals During General Anesthesia.

Hui-Hsuan Ke1,2,3, Chien-Kun Ting2,3, Yi-Ming Huang4

  • 1From the Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei City, Taiwan.

Anesthesia and Analgesia
|August 5, 2025
PubMed
Summary
This summary is machine-generated.

Camera-based photoplethysmography (PPG) shows high agreement with conventional monitors for measuring heartbeat intervals during anesthesia. This noninvasive system offers a promising alternative for surgical settings, reducing infection risks and improving patient comfort.

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Area of Science:

  • Medical Devices
  • Biomedical Engineering
  • Anesthesiology

Background:

  • Photoplethysmography (PPG) is a long-established method for vital sign assessment.
  • Camera-based PPG offers noninvasive monitoring but faces challenges in surgical anesthesia due to low perfusion, motion artifacts, and ambient light.
  • Evaluating novel camera-based PPG systems against conventional monitors is crucial for clinical adoption.

Purpose of the Study:

  • To assess the efficacy of the FaCare camera-based photoplethysmography system.
  • To compare FaCare's heartbeat interval measurements against a conventional GE HealthCare contact monitor during surgical anesthesia.
  • To determine the suitability of FaCare as a noninvasive monitoring tool in operating rooms.

Main Methods:

  • Thirty patients undergoing video-assisted thoracic surgery were enrolled.
  • Data were collected using a webcam and FaCare software at four distinct anesthesia stages.
  • Six remote PPG techniques powered by artificial intelligence algorithms processed the collected data.

Main Results:

  • A high degree of agreement was observed between the FaCare system and the GE HealthCare monitor.
  • Pearson correlation analysis and Bland-Altman plots indicated strong consistency in heartbeat interval measurements.
  • 88.1% of heart rate correlation coefficients exceeded 0.8, demonstrating FaCare's reliable performance.

Conclusions:

  • The FaCare camera-based PPG system, utilizing AI-driven remote PPG techniques, demonstrated strong consistency with conventional monitors during anesthesia.
  • FaCare provides a noninvasive alternative, potentially reducing infection risks and enhancing patient comfort.
  • Further research into AI algorithms, data synchronization, and sampling frequency is recommended to optimize clinical application.