Pitfalls in determination of leak point pressure

R. M. Decter, L. Harpster

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

To evaluate the influence of the technical aspects of leak point pressure measurement we performed water cystometry and determined the leak point pressure in 23 patients 5 weeks to 21 years old with neurogenic bladders. We initially assessed the influence of catheter size on the leak point pressure and determined that the measured pressure varied in direct proportion to the catheter diameter. We further evaluated the effect of the method of infusion (gravity drip versus pump) and the infusion rate on pressures measured by a transducer in an in vitro setting. Using the gravity drip infusion technique pressure measurement was adversely affected by smaller catheter size and rapid infusion rate. With the pump infusion system neither catheter size nor infusion rate adversely affected pressure measurement. We conclude that the clinical measurement of the leak point pressure during water cystometry is influenced by the catheter size, and it is dependent upon the technique and rate of infusion. We believe that standardization of the technical aspects of leak point pressure determination would provide for reproducible results and facilitate comparisons of reports among different investigators.

Original languageEnglish (US)
Pages (from-to)588-591
Number of pages4
JournalJournal of Urology
Volume148
Issue number2 II
StatePublished - Jan 1 1992

Fingerprint

Pressure
Catheters
Infusion Pumps
Gravitation
Intravenous Infusions
Neurogenic Urinary Bladder
Water
Transducers
Research Personnel

All Science Journal Classification (ASJC) codes

  • Urology

Cite this

Decter, R. M. ; Harpster, L. / Pitfalls in determination of leak point pressure. In: Journal of Urology. 1992 ; Vol. 148, No. 2 II. pp. 588-591.
@article{f8711ed2490b4c5388f1f05ae6cea255,
title = "Pitfalls in determination of leak point pressure",
abstract = "To evaluate the influence of the technical aspects of leak point pressure measurement we performed water cystometry and determined the leak point pressure in 23 patients 5 weeks to 21 years old with neurogenic bladders. We initially assessed the influence of catheter size on the leak point pressure and determined that the measured pressure varied in direct proportion to the catheter diameter. We further evaluated the effect of the method of infusion (gravity drip versus pump) and the infusion rate on pressures measured by a transducer in an in vitro setting. Using the gravity drip infusion technique pressure measurement was adversely affected by smaller catheter size and rapid infusion rate. With the pump infusion system neither catheter size nor infusion rate adversely affected pressure measurement. We conclude that the clinical measurement of the leak point pressure during water cystometry is influenced by the catheter size, and it is dependent upon the technique and rate of infusion. We believe that standardization of the technical aspects of leak point pressure determination would provide for reproducible results and facilitate comparisons of reports among different investigators.",
author = "Decter, {R. M.} and L. Harpster",
year = "1992",
month = "1",
day = "1",
language = "English (US)",
volume = "148",
pages = "588--591",
journal = "Journal of Urology",
issn = "0022-5347",
publisher = "Elsevier Inc.",
number = "2 II",

}

Decter, RM & Harpster, L 1992, 'Pitfalls in determination of leak point pressure', Journal of Urology, vol. 148, no. 2 II, pp. 588-591.

Pitfalls in determination of leak point pressure. / Decter, R. M.; Harpster, L.

In: Journal of Urology, Vol. 148, No. 2 II, 01.01.1992, p. 588-591.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pitfalls in determination of leak point pressure

AU - Decter, R. M.

AU - Harpster, L.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - To evaluate the influence of the technical aspects of leak point pressure measurement we performed water cystometry and determined the leak point pressure in 23 patients 5 weeks to 21 years old with neurogenic bladders. We initially assessed the influence of catheter size on the leak point pressure and determined that the measured pressure varied in direct proportion to the catheter diameter. We further evaluated the effect of the method of infusion (gravity drip versus pump) and the infusion rate on pressures measured by a transducer in an in vitro setting. Using the gravity drip infusion technique pressure measurement was adversely affected by smaller catheter size and rapid infusion rate. With the pump infusion system neither catheter size nor infusion rate adversely affected pressure measurement. We conclude that the clinical measurement of the leak point pressure during water cystometry is influenced by the catheter size, and it is dependent upon the technique and rate of infusion. We believe that standardization of the technical aspects of leak point pressure determination would provide for reproducible results and facilitate comparisons of reports among different investigators.

AB - To evaluate the influence of the technical aspects of leak point pressure measurement we performed water cystometry and determined the leak point pressure in 23 patients 5 weeks to 21 years old with neurogenic bladders. We initially assessed the influence of catheter size on the leak point pressure and determined that the measured pressure varied in direct proportion to the catheter diameter. We further evaluated the effect of the method of infusion (gravity drip versus pump) and the infusion rate on pressures measured by a transducer in an in vitro setting. Using the gravity drip infusion technique pressure measurement was adversely affected by smaller catheter size and rapid infusion rate. With the pump infusion system neither catheter size nor infusion rate adversely affected pressure measurement. We conclude that the clinical measurement of the leak point pressure during water cystometry is influenced by the catheter size, and it is dependent upon the technique and rate of infusion. We believe that standardization of the technical aspects of leak point pressure determination would provide for reproducible results and facilitate comparisons of reports among different investigators.

UR - http://www.scopus.com/inward/record.url?scp=0026655546&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026655546&partnerID=8YFLogxK

M3 - Article

C2 - 1640528

AN - SCOPUS:0026655546

VL - 148

SP - 588

EP - 591

JO - Journal of Urology

JF - Journal of Urology

SN - 0022-5347

IS - 2 II

ER -