Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy

Background: The objective of this study was to assess the effects of 25-degree and 30-degree Trendelenburg positions on intraocular pressure (IOP) changes during robot-assisted radical prostatectomy (RARP). Materials and methods: This prospective study involved a total of 30 consecutive patients und...

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Main Authors: Masatomo Nishikawa, Hiromitsu Watanabe, Tomofumi Kurahashi
Format: Article
Language:English
Published: Elsevier 2017-12-01
Series:Prostate International
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2287888217300193
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author Masatomo Nishikawa
Hiromitsu Watanabe
Tomofumi Kurahashi
author_facet Masatomo Nishikawa
Hiromitsu Watanabe
Tomofumi Kurahashi
author_sort Masatomo Nishikawa
collection DOAJ
description Background: The objective of this study was to assess the effects of 25-degree and 30-degree Trendelenburg positions on intraocular pressure (IOP) changes during robot-assisted radical prostatectomy (RARP). Materials and methods: This prospective study involved a total of 30 consecutive patients undergoing RARP. All participants were randomly divided into two groups: Trendelenburg position with the head down at 25 degrees or 30 degrees. In addition to representative operative outcomes, IOP was measured at six discrete time points; Time 1 (T1): before induction of general anesthesia, patients in a horizontal supine position; T2: after induction of general anesthesia, patients in a horizontal supine position; T3: 1 hour after adopting the Trendelenburg position; T4: 2 hours after adopting the Trendelenburg position; T5: after pneumoperitoneum resolution in the Trendelenburg position; T6: anesthetized before awakening in a supine position. Results: The total and console operative times, estimated blood loss, and intravenous fluid intake during RARP did not significantly differ between the two groups. While the IOP values measured at the same time points were similar between the two groups, the 25-degree Trendelenburg position significantly attenuated the IOP change from T1 to T3, T4, and T5 compared with those at 30 degrees. Conclusions: These findings suggest that RARP in the 25-degree Trendelenburg position may reduce the risks of position-related ophthalmic complications without increasing the difficulty of the surgical procedure.
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spelling doaj.art-e3fab6422fb24698b1c260a77c4f44872023-09-03T05:16:34ZengElsevierProstate International2287-88822017-12-015413513810.1016/j.prnil.2017.03.008Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomyMasatomo NishikawaHiromitsu WatanabeTomofumi KurahashiBackground: The objective of this study was to assess the effects of 25-degree and 30-degree Trendelenburg positions on intraocular pressure (IOP) changes during robot-assisted radical prostatectomy (RARP). Materials and methods: This prospective study involved a total of 30 consecutive patients undergoing RARP. All participants were randomly divided into two groups: Trendelenburg position with the head down at 25 degrees or 30 degrees. In addition to representative operative outcomes, IOP was measured at six discrete time points; Time 1 (T1): before induction of general anesthesia, patients in a horizontal supine position; T2: after induction of general anesthesia, patients in a horizontal supine position; T3: 1 hour after adopting the Trendelenburg position; T4: 2 hours after adopting the Trendelenburg position; T5: after pneumoperitoneum resolution in the Trendelenburg position; T6: anesthetized before awakening in a supine position. Results: The total and console operative times, estimated blood loss, and intravenous fluid intake during RARP did not significantly differ between the two groups. While the IOP values measured at the same time points were similar between the two groups, the 25-degree Trendelenburg position significantly attenuated the IOP change from T1 to T3, T4, and T5 compared with those at 30 degrees. Conclusions: These findings suggest that RARP in the 25-degree Trendelenburg position may reduce the risks of position-related ophthalmic complications without increasing the difficulty of the surgical procedure.http://www.sciencedirect.com/science/article/pii/S2287888217300193Intraocular pressureProstate cancerRobot-assisted radical prostatectomyTrendelenburg position
spellingShingle Masatomo Nishikawa
Hiromitsu Watanabe
Tomofumi Kurahashi
Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy
Prostate International
Intraocular pressure
Prostate cancer
Robot-assisted radical prostatectomy
Trendelenburg position
title Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy
title_full Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy
title_fullStr Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy
title_full_unstemmed Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy
title_short Effects of 25- and 30-degree Trendelenburg positions on intraocular pressure changes during robot-assisted radical prostatectomy
title_sort effects of 25 and 30 degree trendelenburg positions on intraocular pressure changes during robot assisted radical prostatectomy
topic Intraocular pressure
Prostate cancer
Robot-assisted radical prostatectomy
Trendelenburg position
url http://www.sciencedirect.com/science/article/pii/S2287888217300193
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AT tomofumikurahashi effectsof25and30degreetrendelenburgpositionsonintraocularpressurechangesduringrobotassistedradicalprostatectomy