Volume 49, Issue 2 pp. 218-228
MAIN TEXT

The polymyxin-B direct hemoperfusion OPTimal Initiation timing with Catecholamine PMX-OPTIC study: A multicenter retrospective observational study

Kensuke Nakamura

Corresponding Author

Kensuke Nakamura

Department of Critical Care Medicine, Yokohama City University Hospital, Yokohama, Kanagawa, Japan

Department of Emergency and Critical Care Medicine, Hitachi General Hospital, Ibaraki, Japan

Correspondence

Kensuke Nakamura, Department Critical Care Medicine, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Kanagawa, Japan.

Email: [email protected]

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Tetsuya Okazaki

Tetsuya Okazaki

Department of Clinical Engineering, Kyoto Okamoto Memorial Hospital, Kyoto, Japan

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Akihito Tampo

Akihito Tampo

Department of Emergency Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, Japan

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Katsunori Mochizuki

Katsunori Mochizuki

Department of Emergency and Critical Care Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan

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Naoki Kanda

Naoki Kanda

Department of Emergency and Critical Care Medicine, Hitachi General Hospital, Ibaraki, Japan

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Takahiro Ono

Takahiro Ono

Department of Emergency and Critical Care Medicine, University of Tsukuba Hospital, Ibaraki, Japan

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Kunio Yanagita

Kunio Yanagita

Department of Intensive Care Medicine, Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan

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Taro Shimomura

Taro Shimomura

Department of Clinical Engineering, Japanese Red Cross Osaka Hospital, Osaka, Japan

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Taichi Murase

Taichi Murase

Department of Clinical Engineering, Ijinkai Takeda General Hospital, Kyoto, Japan

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Ken Saito

Ken Saito

Department of Clinical Engineering, Medical Corporation Tokushukai, Uji Tokushukai Hospital, Kyoto, Japan

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Takahiro Hirayama

Takahiro Hirayama

Department of Emergency, Critical Care and Disaster Medicine, Faculty of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan

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Tomoaki Ito

Tomoaki Ito

Department of Clinical Engineering, Kokura Memorial Hospital, Fukuoka, Japan

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Koji Ogawa

Koji Ogawa

Department of Clinical Engineering, National Cerebral and Cardiovascular Center, Osaka, Japan

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Mizuki Nakamura

Mizuki Nakamura

Department of Clinical Engineering, Nara Prefecture Seiwa Medical Center, Nara, Japan

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Tomohiro Oda

Tomohiro Oda

Department of Clinical Engineering, Toyooka Public Hospital, Toyooka, Hyogo, Japan

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Takeshi Morishima

Takeshi Morishima

Department of Clinical Engineering, Akashi Medical Center, Akashi, Hyogo, Japan

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Takuma Fukushima

Takuma Fukushima

Department of Clinical Engineering, Fukuoka Wajiro Hospital, Fukuoka, Japan

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Hiroharu Yasui

Hiroharu Yasui

Department Medical Engineer Center, Matsue City Hospital, Matsue, Shimane, Japan

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Naoki Akashi

Naoki Akashi

Department of Emergency and Critical Care Medicine, Hitachi General Hospital, Ibaraki, Japan

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Kojiro Oshima

Kojiro Oshima

Department Blood Purification, National Defence Medical College Hospital, Saitama, Japan

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Hiroo Kawarazaki

Hiroo Kawarazaki

Department of the Fourth Internal Medicine, Teikyo University Mizonokuchi Hospital, Kawasaki, Kanagawa, Japan

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Tsukasa Akiba

Tsukasa Akiba

Department Clinical Engineering, Tsuchiura Kyodo General Hospital, Ibaraki, Japan

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Susumu Uemura

Susumu Uemura

Department of Clinical Engineering, Nikko Memorial Hospital, Muroran, Hokkaido, Japan

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Yuhei Honma

Yuhei Honma

Division of Clinical Engineering, Asahikawa Medical University Hospital, Asahikawa, Hokkaido, Japan

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Kenichi Nitta

Kenichi Nitta

Department of Emergency and Critical Care Medicine, Shinshu University School of Medicine, Nagano, Japan

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Koji Okamoto

Koji Okamoto

Division of Nephrology, Rheumatology and Endocrinology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan

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Shunsuke Takaki

Shunsuke Takaki

Department of Critical Care Medicine, Yokohama City University Hospital, Yokohama, Kanagawa, Japan

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Hirotaka Takeda

Hirotaka Takeda

Department of Clinical Engineering, Nanpuh Hospital, Kagoshima, Japan

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Chizuru Yamashita

Chizuru Yamashita

Department of Anesthesiology and Critical Care Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan

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First published: 18 September 2024
Citations: 1

Abstract

Background

Polymyxin-B direct hemoperfusion (PMX-DHP) is an endotoxin adsorption column-based blood purification therapy. Since one of the most potent effects of PMX-DHP is blood pressure elevations, it may be the most effective when it is introduced at the time when the need for vasopressors is the greatest, which, in turn, may reduce mortality.

Methods

A multicenter retrospective study was conducted at 24 ICUs in Japan. In each ICU, the 20 most recent consecutive cases of septic shock treated with PMX-DHP were analyzed. The duration between the time of the peak vasopressive agent dose, expressed as the noradrenaline equivalent dose (NEq), and the time of PMX initiation was evaluated. The primary outcome was 28-day mortality, and a multivariable analysis was performed to investigate factors associated with mortality.

Results

A total of 480 septic shock patients were included in the analysis. Among all patients, the 28-day mortality group was older, more severely ill, and had a higher body mass index. The NEq peak and NEq on PMX-DHP initiation were both higher in deceased patients. Regarding the timing of PMX-DHP initiation from the NEq peak, −4 << 4 h had more survivors (229/304, 75.3%) than ≤−4 h (50/75, 66.7%) and ≥4 h (66/101, 65.4%) (p = 0.085). When −4 << 4 h was assigned as a reference, the timing of PMX-DHP initiation from the NEq peak of ≤−4 h had an odds ratio of 1.96 (1.07–3.58), p = 0.029, while ≥4 h had an odds ratio of 1.64 (0.94–2.87), p = 0.082 for 28-day mortality, in the multivariable regression analysis. A spline curve of the relationship between the probability of death and the timing of PMX-DHP initiation from the NEq peak showed a downward convex curve with a nadir at timing = 0. The odds ratios of the timing of PMX-DHP initiation other than −4 << 4 h were significantly higher in an older age, male sex, lower BMI, more severe illness, and higher oxygenation.

Conclusions

The induction of PMX-DHP at the time of the peak vasopressor dose correlated with lower mortality. PMX-DHP is one of the options available for elevating blood pressure in septic shock, and its initiation either too early or late for shock peak may not improve the outcome.

CONFLICT OF INTEREST STATEMENT

We declare that we have no conflicts of interest related to this study.

DATA AVAILABILITY STATEMENT

Individual participant data that underlie the results reported in the present study are available from the corresponding author upon reasonable request.

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