Carotid artery corrected flow time and respiratory variation of blood flow peak velocity for prediction of hypotension after induction of general anesthesia in adult patients undergoing emergency laparotomy for peritonitis: A prospective, observational study

颈动脉校正血流时间和血流峰值速度呼吸变异性对预测成人腹膜炎急诊剖腹探查术后全身麻醉诱导后低血压的预测价值：一项前瞻性观察研究