WHAT DO YOU SUGGEST ?

Michael Shuster subs2subs at poky.ca
Fri Sep 1 01:00:53 BST 2006


You don't prove your point.  Only your prejudices.

No one said the LMA provides complete protection from aspiration.  If you
repeat your search inserting Combitube or endotracheal tube in place of LMA
you will find cases of aspiration for these other devices as well.  Cases
are not evidence.  

For evidence see studies which test these devices for aspiration.  They show
no significant difference between the LMA and the ETT.

Try:
Ho, B. Y. M., H. J. Skinner, et al. (1998). "Gastro-oesophageal reflux
during day case gynaecological laparoscopy under positive pressure
ventilation: Laryngeal mask vs. tracheal intubation." Anaesthesia. 53(9):
921-924., 
Maltby, J. R., M. T. Beriault, et al. (2003). "LMA-Classic and LMA-ProSeal
are effective alternatives to endotracheal intubation for gynecologic
laparoscopy." Can J Anaesth 50(1): 71-7., 
Rewari, W. and H. L. Kaul (1999). "Regurgitation and aspiration during
gynaecological laparoscopy: Comparison between laryngeal mask airway and
tracheal intubation." Journal of Anaesthesiology Clinical Pharmacology.
15(1): 67-70.)

Studies of LMA in resuscitation don't show any higher incidence of
aspiration than do similar studies using Combitube or ETT.

To list a few...
Anonymous (1994). "The use of the laryngeal mask airway by nurses during
cardiopulmonary resuscitation. Results of a multicentre trial." Anaesthesia.
49(1): 3-7.
Kokkinis, K. (1994). "The use of the laryngeal mask airway in CPR."
Resuscitation 27(1): 9-12. 	
Stone, B. J., P. J. Chantler, et al. (1998). "The incidence of regurgitation
during cardiopulmonary resuscitation: a comparison between the bag valve
mask and laryngeal mask airway." Resuscitation 38(1): 3-6.


-----Original Message-----
From: trauma-list-bounces at trauma.org [mailto:trauma-list-bounces at trauma.org]
On Behalf Of Mike
Sent: Thursday, August 31, 2006 5:20 PM
To: Trauma & Critical Care mailing list
Subject: Re: WHAT DO YOU SUGGEST ?

Oh my

I see your quick to make a statement without backing it up and i guess thats
OK?

first, please do not compare the OR with the pre hospital arena, its like
apples an oranges. When was the last time you drug someone out of a car,
popped em on a backboard, tied em to it and then drove them anywhere? They
are lying nice and prone on the OR table. NOT the same thing

Im not being dramatic, the Literature backs me up. Now, if you would like, i
could post the other 50 orso articles which prove my point even in the OR.
It is a common saying amoung anesthetists the LMA Let eM Aspirate. The
reason why is to REMIND you that it does not stop aspiration. really, look
at he design, that should be self evident. It rarely seats perfectly and the
sizes are never perfect. Aspiration is a real issue with LMAs.

Here is my "nonesense". Next time, consider doing a medline search before
you challenge someone.

M
      From the  British Journal of Anaesthesia 2004 93(4):579-582 


Aspiration and the laryngeal mask airway: three cases and a review of the
literature C. Keller1, J. Brimacombe2,*, J. Bittersohl3, P. Lirk1 and A. von
Goedecke1
1 Department of Anaesthesia and Intensive Care Medicine, Leopold-Franzens
University, Innsbruck, Austria. 2 James Cook University, Department of
Anaesthesia and Intensive Care, Cairns Base Hospital, Australia. 3
Department of Anaesthesiology and Intensive Care Medicine,
Philipps-University, Marburg, Germany 

* Corresponding author. E-mail: jbrimaco at bigpond.net.au

The primary limitation of the laryngeal mask airway (LMAR) is that it does
not reliably protect the lungs from regurgitated stomach content. We
describe three cases of aspiration associated with the LMA, including the
first brain injury, the first death, and the first associated with the
intubating LMA, and review the 20 specific case reports of aspiration
associated with the LMA that we were able to find described in the
literature. 

 O. Hung and J. A. Law
Advances in airway management
Can J Anesth, June 1, 2006; 53(6): 628 - 631. 

 R. S. Vaughan, I. T. Campbell, S. Patel, G. Turner, J. Brimacombe, and C.
Keller Aspiration and the laryngeal mask airway Br. J. Anaesth., April 1,
2005; 94(4): 545 - 547. 

Cook C, Gande AR. Aspiration and death associated with the use of the
laryngeal mask airway.
Br J Anaesth. 2005 Sep;95(3):425-6

 Brimacombe JR, Berry A. The incidence of aspiration associated with the
laryngeal mask airway: a meta-analysis of published literature.
J Clin Anesth. 1995 Jun;7(4):297-305. 

Ismail-Zade IA, Vanner RG. Regurgitation and aspiration of gastric contents
in a child during general anaesthesia using the laryngeal mask airway.
Paediatr Anaesth. 1996;6(4):325-8

Campbell IT.  Aspiration and the laryngeal mask airway.
Br J Anaesth. 2005 Apr;94(4):545-6

Cassinello F, Rodrigo FJ, Munoz-Alameda L, Perez-Tejerizo G, Vallejo D.
Postoperative pulmonary aspiration of gastric contents in an infant after
general anesthesia with laryngeal mask airway (LMA) Anesth Analg. 2000
Jun;90(6):1457.

Griffin RM, Hatcher IS.  Aspiration pneumonia and the laryngeal mask airway.
Anaesthesia. 1990 Dec;45(12):1039-40. 

.----- Original Message ----- 

From: "Michael Shuster" <subs2subs at poky.ca>
To: "'Trauma &amp; Critical Care mailing list'" <trauma-list at trauma.org>
Sent: Thursday, August 31, 2006 3:58 PM
Subject: RE: WHAT DO YOU SUGGEST ?


> What nonsense.  
> 
> There's absolutely no evidence that there's any difference in rate of 
> aspiration between LMA, Combitube or endotracheal tube.  Studies have 
> been done with each of these devices in the OR using methylene blue.  
> All performed well (but not perfectly).  Studies of each of these 
> devices in resuscitation have not shown any differences in rates of
aspiration.
> 
> Michael
> 
> -----Original Message-----
> From: trauma-list-bounces at trauma.org 
> [mailto:trauma-list-bounces at trauma.org]
> On Behalf Of Mike
> Sent: Thursday, August 31, 2006 4:44 PM
> To: Trauma &amp; Critical Care mailing list
> Subject: Re: WHAT DO YOU SUGGEST ?
> 
> you know what LMA stands for?
> 
> Let eM Aspirate.
> 
> LMAs have no place in EMS.  ILMAs are the best choice or even a 
> combitube will protect against aspiration better than an LMA.
> 
> m
> ----- Original Message -----
> From: "MARK FORREST" <atacc.doc at btinternet.com>
> To: "Trauma &amp; Critical Care mailing list" <trauma-list at trauma.org>
> Sent: Thursday, August 31, 2006 3:06 PM
> Subject: Re: WHAT DO YOU SUGGEST ?
> 
> 
>> LMA......simple, quick, reliable and easy to convert to 
>> intubation/definitive airway as soon as possible...why struggle!
>> Mark F
>> Anaes/Crit Care Cons,UK
>>
>>
>> ----- Original Message ----
>> From: ofiara at comcast.net
>> To: trauma-list at trauma.org
>> Sent: Thursday, 31 August, 2006 10:03:42 PM
>> Subject: WHAT DO YOU SUGGEST ?
>>
>>
>>>From an EMS standpoint, with the various pt.population,(old to young). 
>>>Reasons for an advanced airway:(trauma-medical-burns), and the places 
>>>you may be intubating,( the box, a darkly lighted small room in a 
>>>house-on scene of a MVC), what do you suggust as a back-up to the 
>>>ETT. A Combi-tube, a LMA or a bougie ? Thanks  for any input.
>>  Larry Ofiara, R.N.
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