Document Detail

Value of routine pressure monitoring system changes after 72 hours of continuous use.
MedLine Citation:
PMID:  8062565     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To assess the infection potential of not routinely changing invasive monitoring kits and associated plasticware. DESIGN: A prospective, observational study of microbiological contamination of a cohort of pressure monitoring infusion systems. SETTING: Adult intensive care units in a university tertiary care center. PATIENTS: Patients who had invasively monitored arterial, central venous, or pulmonary artery catheters in place for > or = 96 hrs without a change to the system were entered into the study. INTERVENTIONS: Fluid samples were obtained from the proximal stopcock of the monitoring kits every 24 hrs, beginning with a sample at 72 hrs and continuing until either the plasticware or catheter was changed or discontinued. Fluid samples were placed in tryptic soy broth and spread on blood agar plates within 24 hrs. MEASUREMENTS AND MAIN RESULTS: Of 451 intervals in which the system remained unviolated for > or = 96 hrs except for sampling, no positive cultures were found. Of the 333 monitoring kits/lines in the study, four cultures became positive within 48 hrs of a violation of the system (flush bag change). Positive cultures were obtained from two different patients, one patient having positive fluid cultures from arterial, central venous, and pulmonary arterial kits. This bacterial growth would not have been eliminated with routine system changes as it occurred within a 48-hr timeframe. CONCLUSIONS: Invasive hemodynamic pressure monitoring systems including tubing and plasticware need not be changed routinely as these changes may cause a higher incidence of contamination due to increased violations of the systems.
M K O'Malley; F S Rhame; F B Cerra; R C McComb
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Critical care medicine     Volume:  22     ISSN:  0090-3493     ISO Abbreviation:  Crit. Care Med.     Publication Date:  1994 Sep 
Date Detail:
Created Date:  1994-09-22     Completed Date:  1994-09-22     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0355501     Medline TA:  Crit Care Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1424-30     Citation Subset:  AIM; IM    
Cardiopulmonary Services Department, University of Minnesota Hospital and Clinic, Minneapolis.
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MeSH Terms
Blood Pressure Determination / adverse effects*,  instrumentation*
Catheterization, Central Venous / adverse effects,  instrumentation
Catheters, Indwelling / adverse effects
Critical Illness
Cross Infection / etiology*
Intensive Care Units
Monitoring, Physiologic / adverse effects,  instrumentation*
Prospective Studies
Time Factors

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

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