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Risk Factors for Intraoperative Hypotension in a Transurethral Bladder Tumor Resection with 5-Aminolevulinic Acid under Spinal Subarachnoid Anesthesia:A Multivariate Analysis of a Retrospective Cohort Study Takashi OSHIKAWA 1 , Toyoaki MARUTA 1 , Go OTAO 1 , Isao TSUNEYOSHI 1 1Department of Anesthesiology, University of Miyazaki Hospital Keyword: 5-aminolevulinic acid , transurethral resection of bladder tumor , spinal subarachnoid anesthesia , intraoperative hypotension pp.228-235
Published Date 2025/4/10
DOI https://doi.org/10.18916/masui.2025040004
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 Background:The risk factors for intraoperative hypotension in a transurethral resection of bladder tumor(TUR-Bt)with 5-aminolevulinic acid(5-ALA)performed under spinal subarachnoid anesthesia are unclear.

 Methods:We retrospectively analyzed the cases of the patients who underwent a TUR-Bt with spinal anesthesia under 5-ALA during the period from July 2020 to December 2023 at our institution. Intraoperative hypotension was defined as mean blood pressure(mBP)<65 mmHg. We divided the patients into two groups according to the presence or absence of intraoperative hypotension, and we performed univariate and multivariate analyses using mixed models for variables such as patient background, anesthesia, surgery, and the perioperative period(including the baricity and volume of the local anesthetic used, and the puncture level).

 Results:The study population was 93 patients:74 in the hypotensive group and 19 in the non-hypotensive group. The univariate analysis showed significant between-group differences in the estimated glomerular filtration rate(eGFR), preoperative anesthetic level>Th10, the use of sedation with propofol, and mBP at the patient’s entry to the operating room. The multivariate analysis identified the following as independent risk factors for intraoperative hypotension:preoperative anesthetic level>Th10(odds ratio[OR]3.234, P=0.024), sedation with propofol(OR 8.607, P=0.012), and mBP<95 mmHg at the patient’s entry to the operating room(OR 3.977, P=0.021).

 Conclusion:Risk factors for intraoperative hypotension in spinal anesthesia did not include the baricity or volume of the local anesthetic used or the level of puncture.


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電子版ISSN 印刷版ISSN 0021-4892 克誠堂出版

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