Abstract
ABSTRACTIntroduction:The Foley catheter has been widely assumed to be an effective means of draining the bladder. However, recent studies have brought into question its efficacy. The objective of our study is to further assess the adequacy of Foley catheter for complete drainage of the bladder.Materials and Methods:Consecutive catheterized patients were identified from a retrospective review of contrast enhanced and non-contrast enhanced computed tomo-graphic (CT) abdomen and pelvis studies completed from 7/1/2011-6/30/2012. Residual urine volume (RUV) was measured using 5mm axial CT sections as follows: The length (L) and width (W) of the bladder in the section with the greatest cross sectional area was combined with bladder height (H) as determined by multiplanar reformatted images in order to calculate RUV by applying the formula for the volume (V) of a sphere in a cube: V=(ϖ/6)*(L*W*H).Results:RUVs of 167 (mean age 67) consecutively catheterized men (n=72) and women (n=95) identified by CT abdomen and pelvis studies were calculated. The mean RUV was 13.2 mL (range: 0.0 mL-859.1 mL, standard deviation: 75.9 mL, margin of error at 95% confidence:11.6 mL). Four (2.4%) catheterized patients had RUVs of >50 mL, two of whom had an improperly placed catheter tip noted on their CT-reports.Conclusions:Previous studies have shown that up to 43% of catheterized patients had a RUV greater than 50 mL, suggesting inadequacy of bladder drainage via the Foley catheter. Our study indicated that the vast majority of patients with Foley catheters (97.6%), had adequately drained bladders with volumes of <50 mL.
Highlights
The Foley catheter has been widely assumed to be an effective means of draining the bladder
Though there have been modifications in the 80 years since its creation, the Foley catheter has withstood the test of time and is considered an acceptable means for bladder drainage in the appropriate setting
This, in conjunction with the fact that up to 25% of patients admitted to hospitals have a urinary catheter placed at some point during their stay highlights the healthcare burden generated by catheter-associated urinary tract infection (CAUTI) [3]
Summary
The Foley catheter has been widely assumed to be an effective means of draining the bladder. The objective of our study is to further assess the adequacy of Foley catheter for complete drainage of the bladder. Results: RUVs of 167 (mean age 67) consecutively catheterized men (n=72) and women (n=95) identified by CT abdomen and pelvis studies were calculated. Conclusions: Previous studies have shown that up to 43% of catheterized patients had a RUV greater than 50 mL, suggesting inadequacy of bladder drainage via the Foley catheter. Though there have been modifications in the 80 years since its creation, the Foley catheter has withstood the test of time and is considered an acceptable means for bladder drainage in the appropriate setting. Ibju | Efficacy of Foley Catheter As Measured by CT-Scan the cost of each CAUTI is estimated to be less than $600, the additive cost to hospitals for lack of Medicare and Medicaid reimbursement of a “preventable complication” is considerable [4, 5]
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