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Interleukin-6 as a predictor of early weaning from invasive mechanical ventilation in patients with acute respiratory distress syndrome
kazuya sakai; Mototsugu Nishii; Ryo Saji; Reo Matsumura; Fumihiro Ogawa; Ichiro Takeuchi.
  • kazuya sakai; Yokohama City University School of Medicine Graduate School of Medicine: Yokohama Shiritsu Daigaku Igakubu Daigakuin Igaku Kenkyuka
  • Mototsugu Nishii; Yokohama City University School of Medicine Graduate School of Medicine: Yokohama Shiritsu Daigaku Igakubu Daigakuin Igaku Kenkyuka
  • Ryo Saji; Yokohama City University School of Medicine Graduate School of Medicine: Yokohama Shiritsu Daigaku Igakubu Daigakuin Igaku Kenkyuka
  • Reo Matsumura; Yokohama City University School of Medicine Graduate School of Medicine: Yokohama Shiritsu Daigaku Igakubu Daigakuin Igaku Kenkyuka
  • Fumihiro Ogawa; Yokohama City University School of Medicine Graduate School of Medicine: Yokohama Shiritsu Daigaku Igakubu Daigakuin Igaku Kenkyuka
  • Ichiro Takeuchi; Yokohama City University School of Medicine Graduate School of Medicine: Yokohama Shiritsu Daigaku Igakubu Daigakuin Igaku Kenkyuka
Preprint in English | medRxiv | ID: ppmedrxiv-22273418
ABSTRACT
BackgroundTherapeutic effects of steroids on acute respiratory distress syndrome (ARDS) requiring mechanical ventilation (MV) have been reported. However, predictive indicators of early weaning from MV post-treatment have not yet been defined, making treating established ARDS challenging. Interleukin (IL)-6 has been associated with the pathogenesis of ARDS. ObjectiveOur aim was to clarify clinical utility of IL-6 level in ventilated patients with established ARDS. MethodsClinical, treatment, and outcome data were evaluated in 119 invasively ventilated patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-mediated ARDS. Plasma levels of IL-6 and C-reactive protein (CRP) were measured on days 1, 4, and 7 after intubation. ResultsFifty-two patients were treated with dexamethasone (steroid group), while the remaining 67 patients were not (non-steroid group). Duration of MV use was significantly shorter in the steroid group compared to non-steroid group (11.5{+/-}0.6 vs. 16.1{+/-}1.0 days, P = 0.0005, respectively) along with significantly decreased levels of IL-6 and CRP. Even when restricted to the steroid group, among variables post-MV, IL-6 level on day 7 was most closely correlated with duration of MV use (Spearmans rank correlation coefficient [{rho}] = 0.73, P < 0.0001), followed by CRP level on day 7 and the percentage change in IL-6 or CRP levels between day 1 and day 7. Moreover, among these variables, IL-6 levels on day 7 showed the highest accuracy for withdrawal from MV within 11 days (AUC 0.88), with optimal cutoff value of 20.6 pg/mL. Consistently, the rate of MV weaning increased significantly earlier in patients with low IL-6 ([≤] 20.6 pg/mL) than in those with high IL-6 (> 20.6 pg/mL) (log-rank test P < 0.0001). ConclusionsIn invasively ventilated patients with established ARDS due to SARS-CoV-2, plasma IL-6 levels served as a predictor of early withdrawal from MV after dexamethasone administration.
Full text: Available Collection: Preprints Database: medRxiv Type of study: Prognostic study / Risk factors Language: English Year: 2022 Document Type: Preprint

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Full text: Available Collection: Preprints Database: medRxiv Type of study: Prognostic study / Risk factors Language: English Year: 2022 Document Type: Preprint