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Title: [Effect of the completion time of initial 30 mL/kg fluid resuscitation on the prognosis of patients with septic shock].
Author: Wu F, Chen H, Chen Q, Zheng R, Liu W.
Journal: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue; 2021 Jul; 33(7):803-808. PubMed ID: 34412748.
Abstract:
OBJECTIVE: To investigate the effect of the completion time of initial 30 mL/kg fluid resuscitation on the prognosis of patients with septic shock. METHODS: An observational study was conducted. The inpatients with septic shock admitted to intensive care unit (ICU) of Northern Jiangsu People's Hospital, Affiliated Hospital of Yangzhou University and Jiangdu People's Hospital from October 1st, 2018 to September 30th, 2020 were enrolled. The general data including gender, age, body mass index (BMI), patient source, site of infection, acute physiology and chronic health evaluation II (APACHE II) score, sequential organ failure assessment (SOFA) score and arterial blood lactic acid (Lac) at ICU admission, fluid resuscitation dose, completion time of initial 30 mL/kg fluid resuscitation, mechanical ventilation, incidence of acute kidney injury (AKI), continuous renal replacement therapy (CRRT), length of ICU stay and 28-day mortality. The relationship between the completion time of initial 30 mL/kg fluid resuscitation and ΔSOFA score (the difference between SOFA score 3 hours of fluid resuscitation and initial SOFA score) was analyzed. In addition, according to the completion time (T) of initial 30 mL/kg fluid resuscitation, the patients were divided into T ≤ 1 hour group, 1 hour < T ≤ 2 hours group, 2 hours < T ≤ 3 hours group and T > 3 hours group, and the observation parameters among the groups were compared. RESULTS: (1) A total of 131 patients were enrolled, including 94 males and 37 females with an average age of (68.3±15.0) years old. The median APACHE II score was 27 (21, 34), the median of initial SOFA score was 12 (10, 14), the median of initial Lac was 5.0 (3.4, 7.1) mmol/L, and the most common source of infection was lung, with a total of 87 patients (66.41%). The completion time of initial 30 mL/kg fluid resuscitation and ΔSOFA score fitted the Logistic curve (Y = -1.062 6X²+4.407 9X+0.961 8), which suggested that the early or late completion time of initial fluid resuscitation had adverse effects on the prognosis of patients with septic shock. (2) There was no significant difference in infection site, initial APACHE II score, initial Lac, and initial SOFA score among different completion time of initial 30 mL/kg fluid resuscitation groups. The respiratory support rate, the incidence of AKI and the ratio of CRRT in the T ≤ 1 hour group were significantly higher than those in the 1 hour < T ≤ 2 hours group, 2 hours < T ≤ 3 hours group and T > 3 hours group (respiratory support rate: 78.57% vs. 75.51%, 42.86%, 75.00%; incidence of AKI: 57.14% vs. 20.41%, 21.43%, 50.00%; ratio of CRRT: 35.71% vs. 0%, 7.14%, 16.67%), the differences among the groups were statistically significant (all P < 0.05). The 28-day mortality was the highest in the T ≤ 1 hour group (64.29%), and the lowest in the 1 hour < T ≤ 2 hours group (22.45%), 35.71% in the 2 hours < T ≤ 3 hours group, 33.33% in the T > 3 hours, and the difference among the groups was statistically significant (P < 0.01). CONCLUSIONS: Completion of initial 30 mL/kg fluid resuscitation in 1-2 hours after septic shock may reduce the 28-day mortality and improve organ dysfunction, and initial fluid resuscitation prematurely or too late may increase 28-day mortality. But further research and verification are needed.

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