The ‘prostate-muscle index’: a simple pelvic cavity measurement predicting estimated blood loss and console time in robot-assisted radical prostatectomy

This study was to show the impact of ‘prostate-muscle index (PMI)’, which we developed as a novel pelvic cavity measurement, in patients undergoing robot-assisted radical prostatectomy (RARP). We defined PMI as the ‘distance between the inner edge of the obturator internus muscle and the lateral edg...

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Published in:Scientific reports 2022-07, Vol.12 (1), p.11945-11945, Article 11945
Main Authors: Kimura, Naoki, Yamada, Yuta, Takeshima, Yuta, Otsuka, Masafumi, Akamatsu, Nobuhiko, Hakozaki, Yuji, Miyakawa, Jimpei, Sato, Yusuke, Akiyama, Yoshiyuki, Yamada, Daisuke, Fujimura, Tetsuya, Kume, Haruki
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692/4025
692/4028
Blood
Body mass index
Decision making
Humanities and Social Sciences
Magnetic resonance imaging
multidisciplinary
Multivariate analysis
Patients
Prostate
Prostatectomy
Robotic surgery
Science
Science (multidisciplinary)
Urological surgery
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creator Kimura, Naoki
Yamada, Yuta
Takeshima, Yuta
Otsuka, Masafumi
Akamatsu, Nobuhiko
Hakozaki, Yuji
Miyakawa, Jimpei
Sato, Yusuke
Akiyama, Yoshiyuki
Yamada, Daisuke
Fujimura, Tetsuya
Kume, Haruki
description This study was to show the impact of ‘prostate-muscle index (PMI)’, which we developed as a novel pelvic cavity measurement, in patients undergoing robot-assisted radical prostatectomy (RARP). We defined PMI as the ‘distance between the inner edge of the obturator internus muscle and the lateral edge of the prostate at the magnetic resonance imaging (MRI) slice showing the maximum width of the prostate’. Seven hundred sixty patients underwent RARP at the University of Tokyo Hospital from November 2011 to December 2018. MRI results were unavailable in 111 patients. In total, 649 patients were eligible for this study. Median values of blood loss and console time were 300 mL and 168 min. In multivariate analysis, body mass index (BMI), prostate volume-to-pelvic cavity index (PV-to-PCI), PMI, and surgical experience were significantly associated with blood loss > 300 mL ( P  = 0.0002, 0.002,  160 min in multivariate analysis ( P  = 0.04, 0.004, and 
doi_str_mv 10.1038/s41598-022-16202-6
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subjects 692/4025
692/4028
Blood
Body mass index
Decision making
Humanities and Social Sciences
Magnetic resonance imaging
multidisciplinary
Multivariate analysis
Patients
Prostate
Prostatectomy
Robotic surgery
Science
Science (multidisciplinary)
Urological surgery
title The ‘prostate-muscle index’: a simple pelvic cavity measurement predicting estimated blood loss and console time in robot-assisted radical prostatectomy
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