What is the role of a Foley catheter in bladder pressure assessment?

Updated: Jan 16, 2020
  • Author: Pamela I Ellsworth, MD; Chief Editor: Bradley Fields Schwartz, DO, FACS  more...
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Answer

Various homemade systems have been described. [4, 23, 24, 24, 24] One such system involves placement of a Foley catheter into the bladder and drainage of the bladder. The catheter is then connected to an infusion system, which consists of a needle, intravenous tubing, syringe, pressure transducer, stopcocks, and saline.

First, the needle is inserted into the urine sampling port of the Foley catheter. The transducer is then connected to a monitor and zeroed. The drain tubing is then clamped, and the bladder is infused with saline. The pressure within the system must be allowed to equilibrate before the mean bladder pressure on the monitor is recorded. The system is then broken down and the drain tubing unclamped until the next pressure reading.

An alternative system utilizes a 3-way Foley catheter. Instead of inserting a needle into the urine sampling port, the Y-extension of a pediatric feeding tube is connected to the irrigation port of a 3-way catheter, and fluid infusion/pressure transduction is performed through this lumen.

Potential problems related to such homemade IAP kits include the following: [22]

  • Having the necessary supplies available and the staff knowledgeable in the set up during the acute time of need

  • Lack of quality control

  • Lack of standardization

  • Lack of data reproducibility

  • Time consumption

  • Concerns with sterility and resultant catheter associated urinary tract infections related to breaks in the closed system


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