Search our site 
Advanced Search
Home | Exam dates | Contact us | About us | Testimonials |

You are in Home >> Resources >> Physics and equipment >> Temperature

Clinical use

Created: 2/6/2005

Temperature measurement method Principles Temperature monitoring equipment

Electrical resistance changes non-linearly (falls exponentially) with temperature.

Used in PA catheter (allows continuous measurement) and oesophageal stethoscope. May exist as a small bead which can be placed in body cavities.
Infrared Detector receives infrared radiation from tympanic membrane. Signal is converted to electrical signal. Tympanic thermometer. Correlates most closely with hypothalamic temperature.
Thermocouple Two strips of dissimilar metals of different specific heats and in contact at both ends. Metals expand and contract with change in temperature, producing an electrical potential. This is compared to a reference temperature. The voltage produced is known as the Seebeck effect. Thermocouple junction may exist as a needle.
[i] The practical use of thermocouples for temperature measurement in clinical hyperthermia.
Carnochan P, Dickinson RJ, Joiner MC. Int J Hyperthermia. 1986 Jan-Mar;2(1):1-19.

SiteSection: Article
  Posting rules

     To view or add comments you must be a registered user and login  

Login Status  

You are not currently logged in.
UK/Ireland Registration
Overseas Registration

  Forgot your password?

All rights reserved © 2022. Designed by AnaesthesiaUK.

{Site map} {Site disclaimer} {Privacy Policy} {Terms and conditions}

 Like us on Facebook