CONTINUOUS SIMULTANEOUS REGISTRATION OF SWEATING AND BLOOD FLOW IN A SMALL SKIN AREA
Abstract
A capsular method for recording evaporation from a small skin area (5, 10, or more sq cm), continuously, quantitatively and with a very fast response time as brief as 0.15 sec is presented. Water of diffusion at rates of 0.005 mgm/sq cm/min. or high sweating rates were measured with equal ease. The method is combined with photo electric recording of the skin pulses to provide precise temporal relations of cutaneous vascular events and of sweating in the same segment of skin. less of sweating in forearm skin occurred synchronously with digital vasocon strictions but were not accompanied by changes in the rate of blood flow in forearm skin al though venoconstriction in the forearm often took place with an increase in sweating. The observation contradicted the concept of brady kinin as an important vasodilator in accounting for cutaneous vasodilatation during heat stress.
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Variation in the quasi-DC component of PPG is due to many factors: optical properties of the tissue, average blood volume, respiration, vasomotor activity, vasoconstrictor waves, Traube Hering Meyer waves, and thermoregulation.
“The variation in the quasi-DC component is due to many factors: the optical properties of the tissue, average blood volume, respiration, vasomotor activity, vasoconstrictor waves, Traube Hering Meyer waves, and thermoregulation [4,5,6,7,8,9,10,11,12,13,14].”
From Sources of inaccuracy in photoplethysmography for continuous cardiovascular monitoring (2021) · cites this paper as [8]
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Photoplethysmography and its application in clinical physiological measurement
Allen, J. (2007) · Physiological Measurement · doi:10.1088/0967-3334/28/3/r01 · Cited by 3,967 · see citing works
“…Mayer (THM) waves and also thermoregulation (Burton 1939, Burton and Taylor 1940, Hertzman and Dillon 1940b, Hertzman and Roth 1942a, 1942b, 1942c, Hertzman and Flath 1963, Hyndman et al 1971, Peñáz 1978, Ahmed et al 1982, Harness and Marjanovic 1989, Nitzan et al 1996b, 1996a, general…”
BackgroundSources of inaccuracy in photoplethysmography for continuous cardiovascular monitoring
Fine, J., Branan, K. L., Rodriguez, A. J., Boonya-ananta, T., Ajmal, Ramella-Roman, J. C., McShane, M. J., & Coté, G. L. (2021) · Biosensors · doi:10.3390/bios11040126 · Cited by 348 · see citing works
Introduction to photoplethysmography
Kyriacou, P. A. (2021) · Elsevier eBooks · doi:10.1016/b978-0-12-823374-0.00001-3 · Cited by 21 · see citing works
Chen, Y. (2012) · doi:10.32657/10356/50792
“vasomotor activity, body movement and body temperature [143-156].”
Background
- Authors
- Hertzman, A. B., & Flath, F.
- Publisher
- Defense Technical Information Center
- Published
- 1963-02-01
- Volume
- 34
- Pages
- 710-3
- OpenAlex
- W1504535388
- Cited by
- 4
- References
- 0
- Citations by year
- 2021: 2 · 2012: 1
- Type
- report
- Language
- en
- Open access
- closed
- Locations
- PubMed (publishedVersion)
- Defense Technical Information Center (DTIC) (submittedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
- Keywords
- sweating, skin blood flow, simultaneous recording, evaporation, water diffusion, photoelectric recording, venoconstriction, bradykinin, cutaneous vasodilation, heat stress, forearm skin
- MeSH terms
- Blood Flow Velocity, Body Temperature, Hemodynamics, Humans, Physiology, Skin, Sweating
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