Fig. 2From: Evaluation of penehyclidine for prevention of post operative nausea and vomitting in patients undergoing total thyroidectomy under total intravenous anaesthesia with propofol-remifentanilIncidence of nausea (A) and vomiting (B) in penehyclidine and TIVA groups during 0–2 and 2–24 h after surgery. * P < 0.05 compared with the TIVABack to article page