Critical care (London, England) · 2025
Time to administer polymyxin B hemoperfusion and hemodynamics in patients with septic shock requiring high-dose norepinephrine: a predetermined analysis of a prospective cohort study.
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Miyamoto Kyohei, Kawazoe Yu, Miyagawa Noriko, Yamamura Hitoshi, Ohta Yoshinori, Kimura Takuya, Toyoda Yukitoshi, Kyo Michihito, Sato Tetsuya, Kinjo Masashi, Takahashi Masaki, Maruyama Junichi, Matsuura Hiroshi, Fukushima Kazunori, Murata Satoru, Okazaki Tomoya, Suzuki Tsuyoshi, Sakurai Toshihiro, Takahashi Gaku, Hanajima Tasuku, Morimoto Takeshi
Аннотация
BACKGROUND: Delayed administration of polymyxin B hemoperfusion (PMX-HP) for septic shock could diminish its efficacy in real-world clinical settings.
METHODS: BEAT-SHOCK (BEst Available Treatment for septic SHOCK) registry is a prospective registry consisting of 309 adult patients with septic shock requiring high-dose norepinephrine (≥ 0.2 μg/kg/min). This predetermined analysis included 82 patients treated with PMX-HP. They were grouped according to the median time from intensive care unit (ICU) admission to administration of PMX-HP: the early administration group (n = 40) and the late administration group (n = 42). The primary outcome was short-term hemodynamic status, including mean arterial pressure and vasoactive-inotropic score (VIS; calculated from doses of dopamine, dobutamine, norepinephrine, epinephrine, vasopressin, milrinone, and levosimendan) within 48 h after ICU admission.
RESULTS: The median time from ICU admission to administration of PMX-HP was 265 min (interquartile range [IQR]: 113-480). The median ages were 70 (IQR: 59-81) and 72 (IQR: 64-80) years (P = 0.77), and 21/40 (53%) and 25/42 (60%) patients were male (P = 0.52) in the early and late administration groups, respectively. The dose of norepinephrine at ICU admission was 0.33 (IQR: 0.24-0.47) and 0.30 (IQR: 0.22-0.34) μg/kg/min in the early and late administration groups, respectively (P = 0.17). Within 48 h after ICU admission, mean arterial pressure was significantly higher at 6 h and 8 h, and VIS was significantly lower at 8 h and thereafter in the early administration group. Within a 28-day period, there were 23 (IQR: 21-25) and 21 (IQR: 0-24) vasopressor/inotrope-free days (P = 0.027), and 18 (IQR: 1-23) and 14 (IQR: 0-19) ICU-free days (P = 0.025) in the early and late administration groups, respectively. The cumulative mortality at 90 days was 15.3% in the early administration group and 31.3% in the late administration group (adjusted hazard ratio 0.38; 95% confidence interval 0.13-1.09).
CONCLUSIONS: In patients with septic shock, early administration of PMX-HP was associated with higher mean arterial pressure and lower VIS within 48 h after ICU admission. Additionally, it may be associated with an improved clinical course, represented by more ICU-free and vasopressor/inotrope-free days. Trial registration UMIN Clinical Trial Registry on 1 November 2019 (registration no. UMIN000038302).
METHODS: BEAT-SHOCK (BEst Available Treatment for septic SHOCK) registry is a prospective registry consisting of 309 adult patients with septic shock requiring high-dose norepinephrine (≥ 0.2 μg/kg/min). This predetermined analysis included 82 patients treated with PMX-HP. They were grouped according to the median time from intensive care unit (ICU) admission to administration of PMX-HP: the early administration group (n = 40) and the late administration group (n = 42). The primary outcome was short-term hemodynamic status, including mean arterial pressure and vasoactive-inotropic score (VIS; calculated from doses of dopamine, dobutamine, norepinephrine, epinephrine, vasopressin, milrinone, and levosimendan) within 48 h after ICU admission.
RESULTS: The median time from ICU admission to administration of PMX-HP was 265 min (interquartile range [IQR]: 113-480). The median ages were 70 (IQR: 59-81) and 72 (IQR: 64-80) years (P = 0.77), and 21/40 (53%) and 25/42 (60%) patients were male (P = 0.52) in the early and late administration groups, respectively. The dose of norepinephrine at ICU admission was 0.33 (IQR: 0.24-0.47) and 0.30 (IQR: 0.22-0.34) μg/kg/min in the early and late administration groups, respectively (P = 0.17). Within 48 h after ICU admission, mean arterial pressure was significantly higher at 6 h and 8 h, and VIS was significantly lower at 8 h and thereafter in the early administration group. Within a 28-day period, there were 23 (IQR: 21-25) and 21 (IQR: 0-24) vasopressor/inotrope-free days (P = 0.027), and 18 (IQR: 1-23) and 14 (IQR: 0-19) ICU-free days (P = 0.025) in the early and late administration groups, respectively. The cumulative mortality at 90 days was 15.3% in the early administration group and 31.3% in the late administration group (adjusted hazard ratio 0.38; 95% confidence interval 0.13-1.09).
CONCLUSIONS: In patients with septic shock, early administration of PMX-HP was associated with higher mean arterial pressure and lower VIS within 48 h after ICU admission. Additionally, it may be associated with an improved clinical course, represented by more ICU-free and vasopressor/inotrope-free days. Trial registration UMIN Clinical Trial Registry on 1 November 2019 (registration no. UMIN000038302).