Document Detail

In-line pressures generated in small-bore central venous catheters during power injection of CT contrast media.
MedLine Citation:
PMID:  9169679     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To determine in-line pressures generated in small-bore central venous catheters during power injection of computed tomographic (CT) contrast media. MATERIALS AND METHODS: Five 3.0-7.0-F central venous catheters for pediatric patients were tested at full and half lengths in vitro. In-line pressures were measured during power injection of three contrast media. Rates of injection were increased in steps from 0.1 to 5.0 mL/sec or until a peak pressure of 100 psi (700 kPa) was achieved. The maximum tolerated flow rate was determined with reference to the manufacturer's suggested operating pressure limit for each catheter. RESULTS: At full length, the maximum tolerated flow rates were as follows: 2-3 mL/sec for the large lumen and 1-1.4 mL/sec for the small lumen of the 7.0-F double-lumen catheter; 0.2-0.4 and 0.8-1.2 mL/sec for the 3.0- and 4.0-F peripherally inserted central catheters, respectively; 0.7-1.2 mL/sec for the 6.6-F catheter; and only 0.2 mL/sec for the 4.2-F catheter, which ruptured during testing at higher flow rates. CONCLUSION: Flow rates were documented at which certain small-bore central venous catheters should tolerate power injection of CT contrast media with peak pressures remaining below the manufacturer's recommended operating pressure limits. These data may serve as a guide for clinical use.
L Ruess; D I Bulas; O Rivera; B M Markle
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Radiology     Volume:  203     ISSN:  0033-8419     ISO Abbreviation:  Radiology     Publication Date:  1997 Jun 
Date Detail:
Created Date:  1997-06-24     Completed Date:  1997-06-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0401260     Medline TA:  Radiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  625-9     Citation Subset:  AIM; IM    
Department of Diagnostic Imaging, Children's National Medical Center, Washington, DC 20010, USA.
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MeSH Terms
Catheterization, Central Venous / instrumentation*
Contrast Media / administration & dosage*
Equipment Design
Equipment Failure
Equipment Safety
Injections, Intravenous / instrumentation,  methods
Iohexol / administration & dosage
Iothalamate Meglumine / administration & dosage
Silicones / chemistry
Tomography, X-Ray Computed*
Reg. No./Substance:
0/Contrast Media; 0/Silicones; 13087-53-1/Iothalamate Meglumine; 66108-95-0/Iohexol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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