Enter your Email address:
Wolters Kluwer Health may email you for journal alerts and information, but is committed
to maintaining your privacy and will not share your personal information without
You currently have no recent searches
Dasari, K. B.; Harper, C. M.; Albrecht, M.
BSUH NHS Trust, Department of Anaesthesiology and Intensive Care, Brighton, United Kingdom
Background and Goal of Study: Forced air warming is effective for preventing surgical hypothermia, but its use releases hot exhaust that can disrupt operating theatre airflows. We hypothesize that such concerns might be eliminated if the drapes are arranged to vent the exhaust out of the environment. Thus, we examined air temperatures in a laminar flow theatre using forced air and two air free patient warming systems as controls.
Materials and Methods: Ventilation field temperature was measured with 24 thermistors placed floor to ceiling around a draped mannequin. The drape was raised at the foot end to vent the exhaust. Temperatures were recorded with the devices off and on under simulated surgical conditions, with forced air blanket (Bair Hugger‐Arizant), conductive blanket (HotDog‐Augustine) and resistive mattress (Inditherm). Temperature differences between warming devices, experimental conditions and their significance were determined via ANOVA.
Results and Discussion: Air temperature differences were significant between devices when averaged across locations 25cm above the drape (p< 0.01). Air temperature differences were insignificant between devices when averaged across measures at floor (p=0.33), knee (p=0.80) and head height levels (p=0.57).
Conclusion(s): Significant increases in air temperature were observed near the surgical site for both blankets whilst the mattress had no noticeable effect. Elevated air temperatures were due to blankets contacting and heating the backside of drape, which then radiated this heat into the laminar flow field. Of the blankets, forced air generated the greatest increase in air temperature over the surgical site, which was 4‐fold greater than conductive fabric. Thus, carefully venting the exhaust did not prevent forced air from elevating laminar flow field air‐temperatures, which can result in localized convection currents that disrupt protective clean airflow patterns over the surgical site.
© 2011 European Society of Anaesthesiology
Colleague's E-mail is Invalid
Your Name: (optional)
Separate multiple e-mails with a (;).
Thought you might appreciate this item(s) I saw at European Journal of Anaesthesiology (EJA).
Send a copy to your email
Your message has been successfully sent to your colleague.
Some error has occurred while processing your request. Please try after some time.
An Existing Folder
A New Folder
The item(s) has been successfully added to "".
Login with your LWW Journals username and password.
Username or Email:
Enter and submit the email address you registered with. An email with instructions to reset your password will be sent to that address.
Link to reset your password has been sent to specified email address.
What does "Remember me" mean?
By checking this box, you'll stay logged in for
days or until you logout. You'll get easier access to your articles, collections,
media, and all your other content, even if you close your browser or shut down your
To protect your most sensitive data and activities (like changing your password),
we'll ask you to re-enter your password when you access these services.
What if I'm on a computer that I share with others?
If you're using a public computer or you share this computer with others, we recommend
that you uncheck the "Remember me" box.
Save my selection