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Use of Urinary Catheters in U.S. EDs 1995-2009: A Potentially Modifiable Cause of<br />

Catheter-Associated Urinary Tract Infection?<br />

Gibson Chambers, J MS, Schuur, JD MD MHS.<br />

University of New England College of Osteopathic Medicine, Biddeford, ME; Brigham<br />

and Women’s Hospital, Dept of Emergency Medicine, Boston, MA.<br />

Background: Catheter-associated urinary tract infection (CAUTI) is the most prevalent<br />

hospital-acquired infection. In 2007, the Centers for Disease Control (CDC) published<br />

guidelines for reducing CAUTI, including appropriateness criteria for urinary catheters<br />

(UCs). The objective of this study was to calculate frequency and trends of UC<br />

placement and potentially avoidable UC (PAUC) placement in US EDs and identify<br />

predictors of ED UC placement in admitted patients.<br />

Methods: We analyzed the National Hospital Ambulatory Medical Care Survey<br />

(NHAMCS), a weighted probability sample of US ED visits, from 1995-2009 for use of<br />

UCs in adults. UCs were classified as PAUC if the primary diagnosis did not meet CDC<br />

appropriateness criteria. Predictors of ED placement of UC for admitted patients were<br />

assessed with multivariate logistic regression, results shown as odds ratio (OR) and<br />

95% CI. Statistics controlled for the survey sampling design.<br />

Results: UC placement varied from 22 to 33 per 1000 adult ED visits, peaking in 2003.<br />

Overall, 1.6% (CI 1.5 - 1.7%) of discharged patients and 8.5% (CI 7.9 - 9.1%) of<br />

admitted patients received UCs. The most common reasons for visit among patients<br />

receiving UCs included stomach and abdominal pain, cramps and spasms, urinary<br />

dysfunctions, shortness of breath and chest pain and related symptoms. More than half<br />

of ED-placed UCs were for potentially avoidable diagnoses. The most common<br />

discharge diagnoses among patients receiving UCs included genitourinary symptoms,<br />

urinary tract infections, abdominal pain and congestive heart failure. Predictors of UCs in<br />

admitted patients included increasing age (≥80y vs. 18-59y, OR 3.1, CI 2.7 - 3.6), female<br />

gender (OR 1.3, CI 1.2 - 1.4), race (Hispanic vs. white, 0.8, CI 0.6 - 0.9), arrival by<br />

ambulance (OR 2.5, CI 2.3 - 2.8), increasing urgency (≥2h vs. immediate, OR 0.8, CI 0.6<br />

- 1.1) and longer ED visits(≥4h vs.

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