Chaos-based Quantitative Health Evaluation and Disease State Estimation by Acceleration Plethysmogram

Iokibe, Tadashi; Kurihara, Minako; Maniwa, Yoshio; Ohta, Shöichi; Uchida, Ichirō; Amata, Mitsuyuki; Yamamoto, Manabu

doi:10.3156/jsoft.15.565

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…Most research relating to the APG has been done in Japan. In addition to cardiovascular risk factors, the APG has also been described as a potential diagnostic tool for other disorders, varying from a sensation of coldness [ 74 ] and stress experienced by surgeons [ 76 ] to exposure to lead [ 70 ], pneumonia, intracerebral haemorrhage and acute poisoning [ 82 ]. This has its origins in Eastern medicine where the pulse is considered a very important diagnostic variable.…”

Section: Discussionmentioning

confidence: 99%

“…This has its origins in Eastern medicine where the pulse is considered a very important diagnostic variable. Self organising maps and chaos theory have been applied to find a measure of the disease state or the general state of health [ 69 ], [ 81 ], [ 82 ].…”

Section: Discussionmentioning

confidence: 99%

“…Iokibe et al . [ 82 ] used the APG of healthy subjects and of patients with a different diseases, varying from a common cold to pneumonia, intracerebral hemorrhage and acute poisoning. Their aim was to find an indicator for the seriousness of the disease, the disease state.…”

Section: Ppg Features and Its Applicationsmentioning

confidence: 99%

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On the Analysis of Fingertip Photoplethysmogram Signals

Elgendi

2012

CCR

878

609

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Photoplethysmography (PPG) is used to estimate the skin blood flow using infrared light. Researchers from different domains of science have become increasingly interested in PPG because of its advantages as non-invasive, inexpensive, and convenient diagnostic tool. Traditionally, it measures the oxygen saturation, blood pressure, cardiac output, and for assessing autonomic functions. Moreover, PPG is a promising technique for early screening of various atherosclerotic pathologies and could be helpful for regular GP-assessment but a full understanding of the diagnostic value of the different features is still lacking. Recent studies emphasise the potential information embedded in the PPG waveform signal and it deserves further attention for its possible applications beyond pulse oximetry and heart-rate calculation. Therefore, this overview discusses different types of artifact added to PPG signal, characteristic features of PPG waveform, and existing indexes to evaluate for diagnoses.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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On the Analysis of Fingertip Photoplethysmogram Signals

Elgendi

2012

CCR

878

609

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“…13 Several disadvantages are associated with this method, including the need to conduct an individual calibration for each person, based on skin color and clinical factors, and the drift in calibration over short-time intervals. 14…”

Section: Introductionmentioning

confidence: 99%

The use of photoplethysmography for assessing hypertension

et al. 2019

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The measurement of blood pressure (BP) is critical to the treatment and management of many medical conditions. High blood pressure is associated with many chronic disease conditions, and is a major source of mortality and morbidity around the world. For outpatient care as well as general health monitoring, there is great interest in being able to accurately and frequently measure BP outside of a clinical setting, using mobile or wearable devices. One possible solution is photoplethysmography (PPG), which is most commonly used in pulse oximetry in clinical settings for measuring oxygen saturation. PPG technology is becoming more readily available, inexpensive, convenient, and easily integrated into portable devices. Recent advances include the development of smartphones and wearable devices that collect pulse oximeter signals. In this article, we review (i) the state-of-the-art and the literature related to PPG signals collected by pulse oximeters, (ii) various theoretical approaches that have been adopted in PPG BP measurement studies, and (iii) the potential of PPG measurement devices as a wearable application. Past studies on changes in PPG signals and BP are highlighted, and the correlation between PPG signals and BP are discussed. We also review the combined use of features extracted from PPG and other physiological signals in estimating BP. Although the technology is not yet mature, it is anticipated that in the near future, accurate, continuous BP measurements may be available from mobile and wearable devices given their vast potential.

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