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Fig. 2 | BMC Anesthesiology

Fig. 2

From: RETRACTED ARTICLE: Preoperative versus postoperative ultrasound-guided rectus sheath block for improving pain, sleep quality and cytokine levels in patients with open midline incisions undergoing transabdominal gynecological surgery: a randomized-controlled trial

Fig. 2

Kaplan-Meier survival plot representing time to first PCIA trigger (a), examples of BIS data on the first postoperative night in the two groups (b), and a picture of one incision (c). a The log-rank test suggested no detectable difference between the two groups (P = 0.736). c The white arrow shows fluid in the rectus sheath

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