Even a very small amount of air will reflect the sound waves and show as white. Do not misunderstand, it is not a large amount of air, only lidocaine bubbles. I was not implying that Jonathon did anything wrong, you just have to take the time to flick out the bubbles before injection.
Nancy Moureau, BSN, CRNI PICC Excellence, Inc. 888-714-1951 www.piccexcellence.com [EMAIL PROTECTED] -----Original Message----- From: Tim Talbert [mailto:[EMAIL PROTECTED] Sent: Monday, April 24, 2006 11:28 AM To: Jonathan Rolt; [EMAIL PROTECTED]; nancy Subject: Re: lidocaine Surely no one would inject enough air to "white out the screnn". Do you mean that you think the lido constricts the vessel enough that you cannot see it? The lido works pretty much immediately for most people. Occasionally people seem to need more time or more volume. Tim >>> "nancy" <[EMAIL PROTECTED]> 4/23/06 >>> The white out is due to air, not lidocaine. Just get all the air out of the syringe before starting and that should not happen. Nancy Moureau, BSN, CRNI PICC Excellence, Inc [EMAIL PROTECTED] 1-888-714-1951 ---------- Original Message ---------------------------------- From: "Jonathan Rolt" <[EMAIL PROTECTED]> Date: Sun, 23 Apr 2006 13:18:36 -0400 > >Does anyone know how long injected lidocaine takes to absorb? I have a few >pts that require lido almost all the way down to the vein before thet can >tolerate the procedure, but then I get a white out on the screen of the >ultrasound. I seen the IR doc do it before and have no problems? Do you >then have to move up the vein until you can see again and just make a longer >angle through the spot? Or is there a time frame, after so many minutes the >view comes back? We end up sending some of them down to the OR and they end >up with a surgical central line which could be prevented if I can figure >this out. Also does any one have the OR put in lines under >sedation/conscious sedation I would like to be able to look into that . Have >the MD order/do the sedation but still go with a PICC whether its done by >us or not. > > > > Notice from St.Joseph Health System: Please note that the information contained in this message may be privileged and confidential and protected from disclosure.
