Prevalence of Dependent Loops in Urine Drainage Tubing

Prevalence of Dependent Loops in Urine Drainage Tubing Samsun (Sem) Lampotang, Ph. D Professor of Anesthesiology Director, Center for Safety, Simulation & Advanced Learning Technologies Smart Monitoring - Critical Care San Francisco, CA January 8, 2014

Acknowledgement • Supported in part by the National Institutes of Health (NIH) and the

$Disclosures • As co-inventor of the Human Patient Simulator mannequin, I receive a fraction$

Disclosures • As co-inventor of the Human Patient Simulator mannequin, I receive a fraction of the royalties that the University of Florida collects from the licensee CAE/METI • Research Funding: TATRC - US Army, National Institutes of Health National Library of Medicine, National Science Foundation (NSF, Human Centered Computing Division), I. Heermann Anesthesia Foundation, Dräger Medical, Tele. Flex, Care. Fusion, Philips Healthcare, Maquet, Organon, Schering Plough, Merck Copyright 2013 Samsun Lampotang

Research team members • • • Gale Danek, RN, Ph. D Nikolaus Gravenstein, MD

Prevalence study • Prevalence of urine-filled dependent loops over 3 weeks in summer 2011

Terminology Copyright 2013 Samsun Lampotang

Measurement Method Copyright 2013 Samsun Lampotang

Experimental set-up Schwab, Lizdas, Gravenstein, Lampotang: Accepted for publication Urologic Nursing Journal Copyright 2013

Schwab, Lizdas, Gravenstein, Lampotang: Accepted for publication Urologic Nursing Journal Copyright 2013 Samsun Lampotang

Conclusions • Dependent loops are prevalent and, as Garcia hypothesized, impede bladder emptying and promote urine retention • Urine output monitoring by measurement of urine outflow from the bladder is inaccurate if urine output is being sequestered by the bladder due to the back pressure caused by urine-filled dependent loops Copyright 2013 Samsun Lampotang