Same sized three-way indwelling urinary catheters from various manufacturers present different irrigation and drainage properties.
Ther Adv Urol 2020;
12:1756287219889496. [PMID:
31949476 PMCID:
PMC6952853 DOI:
10.1177/1756287219889496]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 10/12/2019] [Indexed: 11/17/2022] Open
Abstract
Background:
The three-way indwelling urinary catheter (IUC) is used for continuous
bladder irrigation and is considered the cornerstone for clinical treatment
of patients with macroscopic hematuria. Although there seems to be a logical
relationship between catheter size and efficacy of irrigation and drainage,
we often observe relevant variations in these parameters between different
brands of catheters available on the market. The aim of this study was to
compare the mechanical properties of different models of latex and silicone
three-way catheters in an in vitro setting that resembles
clinical use.
Methods:
Three different three-way catheters were evaluated: Gold Silicone-Coated
Rusch® (Model A), 100% Silicone Rusch® (Model B)
and X-Flow Coloplast® (Model C). Irrigation channel, drainage
channel, and overall cross-sectional areas were all digitally measured.
Irrigation and drainage channel flow rates were measured and correlated with
their corresponding catheter cross-sectional area values.
Results:
Different catheter models of the same caliber have different internal
irrigation port diameters, internal drainage port diameters and internal
cuff port diameters. The Model C IUC internal irrigation port diameter is
significantly larger than models A and B. When flows were evaluated, we
found that in the same model, the increase in caliber of the IUC was related
to an increased drainage flow, but not to an increased irrigation flow.
Conclusion:
Precise measurements of the internal architecture of the three-way catheter,
rather than relying on the caliber itself, could assist surgeons in choosing
the best product for each specific patient, while minimizing
complications.
Collapse