I have never been asked to try this. Just thinking about it, I can see where there would be several areas in the system that would produce constriction and therefore may not give you an accurate reading - sludge buildup insider the reservoir, the size of the port access needle, the angle of the port access needle, etc. I am not aware of any studies reporting success or failure with this. Lynn
Service de Réanimation Polyvalente, Institut Gustave Roussy, Villejuif, France. [email protected]
I have never before heard of anyone doing this, and agree with Lynn's comments. However, I did find this citation on Pubmed, which indicates it can work.
I was just asked today and did not have an answer. I was afraid inaccurate readings and damage to the port. The port was already being used for IVs. It is just one lumen. I think the surgeon was asked to put in a triple lumen subclavian line. I didn't measurements would be accurate through the needle either. I would like more information too. I think this is coming up because of hospital sepsis protocols to monitor CVPs.
I agree with Lynn's comments. Seems to me if you have varying rigidity/constriction in the system, you might get an inaccurate reading. I would also worry about tunneled catheters as many are made of silicone and would expand with pressure which might give a false low reading at the transducer. Regarding the article from France, I might try to locate it, but do you know if all of the access equimpment was what we usually use in U.S.?
I have never been asked to try this. Just thinking about it, I can see where there would be several areas in the system that would produce constriction and therefore may not give you an accurate reading - sludge buildup insider the reservoir, the size of the port access needle, the angle of the port access needle, etc. I am not aware of any studies reporting success or failure with this. Lynn
Lynn Hadaway, M.Ed., RN, BC, CRNI
Lynn Hadaway Associates, Inc.
126 Main Street, PO Box 10
Milner, GA 30257
Website http://www.hadawayassociates.com
Office Phone 770-358-7861
HOw about through tunneled accesss lines ie "hickmans"?
Thank you
Accuracy of totally implanted ports, tunnelled, single- and multiple-lumen central venous catheters for measurement of central venous pressure.
Source
Service de Réanimation Polyvalente, Institut Gustave Roussy, Villejuif, France. [email protected]
I have never before heard of anyone doing this, and agree with Lynn's comments. However, I did find this citation on Pubmed, which indicates it can work.
Leigh Ann
I was just asked today and did not have an answer. I was afraid inaccurate readings and damage to the port. The port was already being used for IVs. It is just one lumen. I think the surgeon was asked to put in a triple lumen subclavian line. I didn't measurements would be accurate through the needle either. I would like more information too. I think this is coming up because of hospital sepsis protocols to monitor CVPs.
Thanks,
Sherry Cline RN, CRNI
Clinical Educator
562-904-5028
Sherry Cline Martin RN, CRNI
I agree with Lynn's comments. Seems to me if you have varying rigidity/constriction in the system, you might get an inaccurate reading. I would also worry about tunneled catheters as many are made of silicone and would expand with pressure which might give a false low reading at the transducer. Regarding the article from France, I might try to locate it, but do you know if all of the access equimpment was what we usually use in U.S.?