Investigation of peripheral photoplethysmographic morphology changes induced during a hand-elevation study

Journal of Clinical Monitoring and Computing
M HickeyP A Kyriacou

Abstract

A hand-elevation study was carried out in the laboratory in order to alter peripheral blood flow with the aim of increasing understanding of factors affecting the morphology of peripheral photoplethysmographic signals. Photoplethysmographic (PPG) signals were recorded from twenty healthy volunteer subjects during a hand-elevation study in which the right hand was raised and lowered relative to heart level, while the left hand remained static. Red and infrared (IR) PPG signals were obtained from the right and left index fingers using a custom-made PPG processing system. PPG features were identified using a feature-detection algorithm based on the first derivative of the PPG signal. The systolic PPG amplitude, the reflection index, crest time, pulse width at half height, and delta T were calculated from 20 s IR PPG signals from three positions of the right hand with respect to heart level (-50, 0, +50 cm) in 19 volunteers. PPG features were found to change with hand elevation. On lowering the hand to 50 cm below heart level, ac systolic PPG amplitudes from the finger decreased by 68.32 %, while raising the arm increased the systolic amplitude by 69.99 %. These changes in amplitude were attributed to changes in hydrostatic pressur...Continue Reading

References

Jan 1, 1994·European Journal of Applied Physiology and Occupational Physiology·W HildebrandtJ Stegemann
Jan 1, 1994·Eye·H C ChenE M Kohner
Jun 6, 2002·Blood Pressure Monitoring·Srinu KammilaUNKNOWN University of Calgary Clinical Hypertension Research Group
Sep 1, 1955·Circulation Research·P BEACONSFIELD, J GINSBURG
Sep 1, 1950·Circulation·R W WILKINSJ LITTER
Nov 1, 2005·Journal of the American College of Cardiology·Carmel M McEnieryUNKNOWN ACCT Investigators
Mar 25, 2006·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Antje BurkertMartin Tepel
Aug 1, 2006·Journal of Hypertension·Sandrine C MillasseauPhilip J Chowienczyk
Mar 16, 2007·Dynamic Medicine : DM·Zeki BahadirMichael A Welsch
Oct 18, 2007·Journal of Clinical Monitoring and Computing·Aymen A AwadKirk H Shelley
Dec 14, 2007·IEEE Transactions on Bio-medical Engineering·Stephen R AltyPhilip J Chowienczyk
Apr 24, 2008·Anesthesiology·Andrew ReisnerH Harry Asada
Sep 4, 2009·Journal of Clinical Monitoring and Computing·Nandakumar SelvarajKishore K Deepak
Jun 23, 2011·Physiological Measurement·Qim Y LeeNigel H Lovell
Nov 25, 2011·American Journal of Physiology. Heart and Circulatory Physiology·Gregory S H ChanNigel H Lovell
Dec 22, 2011·Journal of Medical Engineering & Technology·D J MeredithL Tarassenko
Aug 1, 2012·Current Cardiology Reviews·Mohamed Elgendi
Mar 19, 2013·Journal of Plastic, Reconstructive & Aesthetic Surgery : JPRAS·Geraldine DarmaninAbhilash Jain

❮ Previous
Next ❯

Citations

May 2, 2018·Scientific Data·Yongbo LiangRabab Ward
Sep 6, 2018·Physiological Measurement·Pooi Khoon LimStephen J Redmond
Jun 26, 2020·Physiological Measurement·Subhasri ChatterjeePanayiotis A Kyriacou
Jan 9, 2017·Journal of Clinical Monitoring and Computing·Bernd SaugelThomas W L Scheeren
Sep 14, 2018·Frontiers in Physiology·Yoon La YangHangsik Shin
Sep 14, 2018·Scientific Reports·Alexei A KamshilinOleg V Mamontov
May 27, 2017·Journal of Clinical Monitoring and Computing·T Y Abay, P A Kyriacou

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Zahra AbdollahiP A Kyriacou
Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
K Budidha, P A Kyriacou
Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Kristjan PiltMargus Viigimaa
© 2021 Meta ULC. All rights reserved