Related Experiment Videos
Real time heart rate variability assessment from Android smartphone camera photoplethysmography: Postural and device
Summary
This study introduces a smartphone system for real-time heart rate variability (HRV) analysis using camera image processing. It found that device and posture impact accuracy, with specific models showing better performance for beat-to-beat error measurement.
Area of Science:
- Biomedical Engineering
- Mobile Health Technology
- Physiological Signal Processing
Background:
- Smartphone cameras offer a ubiquitous platform for health monitoring.
- Accurate measurement of heart rate variability (HRV) is crucial for cardiovascular health assessment.
- Real-time, non-invasive physiological data acquisition is a growing area of mHealth research.
Purpose of the Study:
- To develop and evaluate a smartphone-based system for real-time pulse-to-pulse (PP) interval time series acquisition.
- To analyze the influence of measurement posture and smartphone model on heart rate and HRV measurement accuracy.
- To assess the reliability of different smartphone models for HRV assessment using Android camera frame processing.
Main Methods:
- Developed a smartphone application utilizing the rear-camera for frame-by-frame image acquisition at 30 Hz.
- Employed the smartphone's GPU with Renderscript API for high-performance image processing to derive photoplethysmography (PPG) signals and PP interval time series.
- Investigated the impact of measurement posture and specific smartphone models (Samsung S5 vs. Motorola X) on the standard deviation of beat-to-beat error (SDE).
Main Results:
- The system achieved negligible relative error for mean heart rate.
- The standard deviation of the beat-to-beat error (SDE) was found to be 7.81 ± 3.81 ms in the worst-case scenario.
- Significant device influence on SDE was observed, with the Samsung S5 demonstrating lower SDE than the Motorola X in a supine posture.
Conclusions:
- Smartphone camera-based systems can acquire real-time PP interval time series for HRV analysis.
- Measurement posture and smartphone model are critical factors affecting the accuracy of beat-to-beat heart rate and HRV measurements.
- This research provides insights into the reliability of various smartphone models for mobile HRV assessment.
Related Concept Videos
01:23Holter Monitor: 24-Hour Monitoring
1.3K
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...
1.3K
01:30Pulse rhythm
1.2K
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...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
1.2K
01:30Factors Influencing Heart Rate
5.9K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
5.9K
01:25Assessment of apical radial pulse
1.1K
Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
1.1K
01:11Assessment of radial pulse
1.2K
Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
1.2K
01:23Assessment of blood pressure in brachial artery(two-step method)
1.3K
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
1.3K