Umbilical artery catheters in the newborn: effects of catheter materials.
BACKGROUND
This section is under preparation and will be included in the next issue.


OBJECTIVE
To determine whether the material used for construction of an umbilical arterial catheter influences the frequency of ischemic events, aortic thrombosis, mortality or necrotising enterocolitis in newborn infants.


METHODS
Randomized and quasi randomized controlled trials of umbilical catheterization use were obtained from the following sources: 1. Effective Care of the Newborn Infant, edited by JC Sinclair and MB Bracken. 2. Medline Search using Melvyl Medline Plus and the keyword headings "Umbilic#", "Catheter#" and subject heading "Infant, Newborn" 3. Search of personal data files


METHODS
Randomized studies in newborn infants of any birthweight or gestation. Comparison of different catheter materials. Clinically important end points such as ischemic events, aortic thrombosis, or catheter occlusion.


METHODS
One non-randomized and one randomized study were retrieved.


RESULTS
There were no significant effects of substituting a heparin bonded polyurethane catheter for the standard PVC catheter. The non-randomized study suggested that there may possibly be a benefit of using a catheter constructed from Silastic, with a reduction in aortic thrombosis.


CONCLUSIONS
There are no demonstrated clinically relevant differences in outcomes between the use of PVC catheters and other materials. Therefore, other considerations such as price and ease of availability may dictate the catheter chosen. An adequately powered randomized comparison of silastic to PVC should be performed.
Barrington
K J
KJ
Pediatrics, Royal Victoria Hospital, 687 av des Pins O, Montreal, P. Quebec, Canada, H3A 1A1. kbarri@po-box.mcgill.ca
D002404:Catheterization / Q000295:instrumentation*; D006801:Humans; D007231:Infant, Newborn; D014469:Umbilical Arteries