AW: [HSF] Deairing the heart

[erdinç naseri]

Don,
You just don't put the aortic vent neddle in the ascending aorta .At the 
same time you vent through it and this negative pressure exerted by the vent 
is the main driving force for removal of the bubbles.
erdinc



>From: Donald Ross <donross at bigpond.com>
>Reply-To: OpenHeart-L at lists.hsforum.com
>To: OpenHeart-L at lists.hsforum.com
>Subject: Re: AW: [HSF] Deairing the heart
>Date: Mon, 5 Mar 2007 17:06:44 +1100
>
>Hal,
>Is there any evidence that the sucking on the root actually extracts  air?
>The bubbles track along the dome of the aorta and unless the vent is  flush 
>it will miss most of the air.


><< ROOTSUCTION.jpg >>


>I just leave a large needle hole at the dome and the air fizzes out,  
>usually associated with bubbles detected by the TEE
>
>Perhaps you are actually just waiting for the air to go north while  you 
>fruitlessly circulate blood from the aorta?
>Don
>
>On 04/03/2007, at 12:45 AM, Hgrmd at aol.com wrote:
>
>>Ani,
>>   Like I said before, a lot of what we hope is effective may take  many  
>>years
>>before it is conclusively demonstrated.  That is why I always make   sure 
>>the
>>bubbles are gone prior to removing the needle vent.  The only   downside 
>>is
>>that it takes a few minutes longer.  I am considered to be a  "fast  
>>surgeon", but
>>I will take all day, if necessary, to get the best job done  for my  
>>patient.
>>   I am certainly not naive in thinking I get every last bubble, as   your
>>anesthesiologists demonstrate by bubbles in the descending aorta.    
>>However, that
>>doesn't negate my efforts to scavenge what I can.  BTW, all  of  those 
>>deairing
>>rituals I was trained to do, I largely abandoned when I began   using TEE 
>>to
>>guide air removal.  Many times with the use of CO2, no  maneuvers  are 
>>necessary
>>at all.  Other times, it takes half an hour of  jiggling the heart and
>>manually inflating the lungs.
>>Hal
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