Construction and evaluation of a manikin for perioperative heat exchange

Acta Anaesthesiologica Scandinavica
Anselm BräuerWolfgang Weyland

Abstract

During surgery hypothermia can be avoided only if the heat exchange between the body surface and the environment can be controlled. To allow a systematic analysis of this heat exchange, we constructed and evaluated a copper manikin of the human body. The manikin consists of six tubes (head, trunk, two arms and two legs) painted matt-black to simulate the emissivity of the human skin. Hot-water mattresses are bonded to the inner surface of the copper tubes to set the surface temperature. Calibrated heat flux transducers were placed on the following points to determine the heat exchange coefficient for radiation and convection (hRC) of the manikin: Forehead, chest, abdomen, upper arm, forearm, dorsal hand, anterior thigh, anterior leg and foot. Room temperature was set to 22 degrees C. Surface temperature of the manikin was set between 22 degrees C and 38 degrees C. The hRC was determined by linear regression analysis as the slope of the temperature gradient between the manikin and the room versus the measured heat flux. Subsequently we studied five minimally clothed volunteers in a climate chamber. Initial chamber temperature was set to 29 degrees C and was lowered slowly to 12 degrees C. The hRC was determined as described abov...Continue Reading

References

Jan 1, 1991·The Journal of Trauma·M J EnglishJ Hinchey
Aug 1, 1990·Journal of Applied Physiology·M B DucharmeP Tikuisis
Apr 1, 1990·The Journal of Trauma·M J EnglishW A Scott
Sep 1, 1990·Anesthesiology·E H Rubinstein, D I Sessler
May 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·R P LaytonP Webb
Mar 1, 1995·Anesthesiology·T MatsukawaC Cheng
Apr 1, 1993·Journal of Applied Physiology·J Frim, M B Ducharme
Apr 9, 1997·JAMA : the Journal of the American Medical Association·S M FrankC Beattie
Jun 12, 1997·The New England Journal of Medicine·D I Sessler
Aug 1, 1961·The Biochemical Journal·E G TOMBROPOULOS, M KLEIBER

❮ Previous
Next ❯

Citations

Jan 2, 2007·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Anselm BräuerMichael Quintel
Dec 1, 2006·Der Anaesthesist·A BräuerM Quintel
May 2, 2009·Journal of Biomedical Optics·Francisco J Sanchez-MarinCarlos Villaseñor-Mora
Sep 16, 2016·Biomedical Instrumentation & Technology·Daniel HellerJohn J Fildes
Mar 15, 2008·European Journal of Anaesthesiology·M J English, T M Hemmerling
Nov 25, 2004·Anesthesia and Analgesia·Anselm BräuerUlrich Braun
Sep 2, 2020·International Journal of Biometeorology·Paweł PodsiadłoHermann Brugger

❮ 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

Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
Michael John Murray EnglishWolfgang Weyland
Acta Anaesthesiologica Scandinavica
Anselm Bräuer, Wolfgang Weyland
Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
Anselm BräuerUlrich Braun
© 2022 Meta ULC. All rights reserved