Airapetian N, Maizel J, Alyamani O, Mahjoub Y, Lorne E, Levrard M, et al. Does inferior vena cava respiratory variability predict fluid responsiveness in spontaneously breathing patients? Crit Care. 2015;19:400.

PubMed  PubMed Central  Google Scholar 

Aissaoui Y, Jozwiak M, Bahi M, Belhadj A, Alaoui H, Qamous Y, et al. Prediction of post-induction hypotension by point-of-care echocardiography: a prospective observational study. Anaesth Crit Care Pain Med. 2022;41(4): 101090.

PubMed  Google Scholar 

Barbier C, Loubieres Y, Schmit C, Hayon J, Ricome JL, Jardin F, et al. Respiratory changes in inferior vena cava diameter are helpful in predicting fluid responsiveness in ventilated septic patients. Intensive Care Med. 2004;30(9):1740–6.

PubMed  Google Scholar 

Bijker JB, Persoon S, Peelen LM, Moons KG. Intraoperative hypotension and perioperative ischemic stroke after general surgery: a nested case-control study. Anesthesiology. 2012;116:658–64.

PubMed  Google Scholar 

Chen H, Zhang X, Wang L, Zheng C, Cai S, Cheng W. Association of infraclavicular axillary vein diameter and collapsibility index with general anesthesia-induced hypotension in elderly patients undergoing gastrointestinal surgery: an observational study. BMC Anesthesiol. 2023;23(1):340.

PubMed  PubMed Central  Google Scholar 

Chiu PL, Li H, Yap KY, Lam KC, Yip PR, Wong CL. Virtual reality-based intervention to reduce preoperative anxiety in adults undergoing elective surgery: a randomized clinical trial. JAMA Netw Open. 2023;6(10): e2340588.

PubMed  PubMed Central  Google Scholar 

Chowdhury AR, Thakuria R, Maitra S, Nath S, Baidya DK, Subramanium R, et al. 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. J Anaesthesiol Clin Pharmacol. 2023;39(3):444–50.

PubMed  PubMed Central  Google Scholar 

Ciccone S, Scicchitano C, Salerno B. Dolichocarotids: echo-color doppler evaluation and clinical role. J Atheroscler Thromb. 2014;21:56–63.

Google Scholar 

Ding P, Guo H, Sun C, Yang P, Kim NH, Tian Y, et al. Combined systemic immune-inflammatory index (SII) and prognostic nutritional index (PNI) predicts chemotherapy response and prognosis in locally advanced gastric cancer patients receiving neoadjuvant chemotherapy with PD-1 antibody sintilimab and XELOX: a prospective study. BMC Gastroenterol. 2022;22(1):121.

CAS  PubMed  PubMed Central  Google Scholar 

Fechner J, El-Boghdadly K, Spahn DR, Motsch J, Struys M, Duranteau O, et al. Anaesthetic efficacy and postinduction hypotension with remimazolam compared with propofol: a multicentre randomised controlled trial. Anaesthesia. 2024;79(4):410–22.

CAS  PubMed  Google Scholar 

Futier E, Lefrant JY, Guinot PG, Godet T, Lorne E, Cuvillon P, et al. Effect of individualized vs standard blood pressure management strategies on postoperative organ dysfunction among high-risk patients undergoing major surgery: a randomized clinical trial. JAMA. 2017;318(14):1346–57.

PubMed  PubMed Central  Google Scholar 

van Houte J, Raaijmaakers AE, Mooi FJ, Meijs LPB, de Boer EC, Suriani I, et al. Evaluating corrected carotid flow time as a non-invasive parameter for trending cardiac output and stroke volume in cardiac surgery patients. J Ultrasound. 2023;26(1):89–97.

PubMed  Google Scholar 

Huang S, Liao Z, Chen A, Wang J, Xu X, Zhang L. Effect of carotid corrected flow time combined with perioperative fluid therapy on preventing hypotension after general anesthesia induction in elderly patients: a prospective cohort study. Int J Surg. 2024;110(2):799–809.

PubMed  Google Scholar 

Jin G, Liu F, Yang Y, Chen J, Wen Q, Wang Y, et al. Carotid blood flow changes following a simulated end-inspiratory occlusion maneuver measured by ultrasound can predict hypotension after the induction of general anesthesia: an observational study. BMC Anesthesiol. 2024;24(1):13.

CAS  PubMed  PubMed Central  Google Scholar 

Kenny JS, Barjaktarevic I, Mackenzie DC, Elfarnawany M, Yang Z, Eibl AM, et al. Carotid artery velocity time integral and corrected flow time measured by a wearable Doppler ultrasound detect stroke volume rise from simulated hemorrhage to transfusion. BMC Res Notes. 2022;15(1):7.

PubMed  PubMed Central  Google Scholar 

Kenny JS, Elfarnawany M, Yang Z, Myers M, Eibl AM, Eibl JK, et al. The Doppler shock index measured by a wearable ultrasound patch accurately detects moderate-to-severe central hypovolemia during lower body negative pressure. J Am Coll Emerg Physicians Open. 2021;2(4): e12533.

PubMed  PubMed Central  Google Scholar 

Kim HJ, Choi YS, Kim SH, Lee W, Kwon JY, Kim DH. Predictability of preoperative carotid artery-corrected flow time for hypotension after spinal anaesthesia in patients undergoing caesarean section: a prospective observational study. Eur J Anaesthesiol. 2021;38(4):394–401.

PubMed  Google Scholar 

Mackenzie DC, Khan NA, Blehar D, Glazier S, Chang Y, Stowell CP, et al. Carotid flow time changes with volume status in acute blood loss. Ann Emerg Med. 2015;66(3):277-82 e1.

PubMed  Google Scholar 

Maitra S, Baidya DK, Anand RK, Subramanium R, Bhattacharjee S. Carotid artery corrected flow time and respiratory variations of peak blood flow velocity for prediction of hypotension after induction of general anesthesia in adult patients undergoing elective surgery: a prospective observational study. J Ultrasound Med. 2020;39(4):721–30.

PubMed  Google Scholar 

Margarson MP, Soni N. Serum albumin: touchstone or totem? Anaesthesia. 1998;53(8):789–803.

CAS  PubMed  Google Scholar 

Mohammadinejad P, Hossein-Nejad H. Calculation of corrected flow time: Wodey’s formula vs Bazett’s formula. J Crit Care. 2018;44:154–5.

PubMed  Google Scholar 

Monk TG, Bronsert MR, Henderson WG, Mangione MP, Sum-Ping ST, Bentt DR, et al. Association between intraoperative hypotension and hypertension and 30-day postoperative mortality in noncardiac surgery. Anesthesiology. 2015;123(2):307–19.

PubMed  Google Scholar 

Myles PS, Bellomo R, Corcoran T, Forbes A, Peyton P, Story D, et al. Restrictive versus liberal fluid therapy for major abdominal surgery. N Engl J Med. 2018;378(24):2263–74.

PubMed  Google Scholar 

Oh EJ, Min JJ, Kwon E, Choi EA, Lee JH. Evaluation of pre-induction dynamic arterial elastance as an adjustable predictor of post-induction hypotension: a prospective observational study. J Clin Anesth. 2023;87: 111092.

PubMed  Google Scholar 

Park SJ, Kim BS, Jee DL. Jaw-thrust induces sympathetic responses during induction of general anesthesia. Korean J Anesthesiol. 2013;65(2):127–31.

PubMed  PubMed Central  Google Scholar 

Peachey T, Tang A, Baker EC, Pott J, Freund Y, Harris T. The assessment of circulating volume using inferior vena cava collapse index and carotid Doppler velocity time integral in healthy volunteers: a pilot study. Scand J Trauma Resusc Emerg Med. 2016;24(1):108.

PubMed  PubMed Central  Google Scholar 

Salmasi V, Maheshwari K, Yang D, Mascha EJ, Singh A, Sessler DI, et al. Relationship between intraoperative hypotension, defined by either reduction from baseline or absolute thresholds, and acute kidney and myocardial injury after noncardiac surgery: a retrospective cohort analysis. Anesthesiology. 2017;126(1):47–65.

PubMed  Google Scholar 

Saugel B, Bebert EJ, Briesenick L, Hoppe P, Greiwe G, Yang D, et al. Mechanisms contributing to hypotension after anesthetic induction with sufentanil, propofol, and rocuronium: a prospective observational study. J Clin Monit Comput. 2022;36(2):341–7.

PubMed  Google Scholar 

Shao L, Zhou Y, Yue Z, Gu Z, Zhang J, Hui K, et al. Pupil maximum constriction velocity predicts post-induction hypotension in patients with lower ASA status: a prospective observational study. BMC Anesthesiol. 2022;22(1):274.

CAS  PubMed  PubMed Central  Google Scholar 

Shaw AD, Khanna AK, Smischney NJ, Shenoy AV, Boero IJ, Bershad M, et al. Intraoperative hypotension is associated with persistent acute kidney disease after noncardiac surgery: a multicentre cohort study. Br J Anaesth. 2022;129(1):13–21.

CAS  PubMed  Google Scholar 

Stapelfeldt WH, Khanna AK, Shaw AD, Shenoy AV, Hwang S, Stevens M, et al. Association of perioperative hypotension with subsequent greater healthcare resource utilization. J Clin Anesth. 2021;75: 110516.

PubMed  Google Scholar 

Sun Z, Jiang D, Liu P, Muccio M, Li C, Cao Y, et al. Age-related tortuosity of carotid and vertebral arteries: quantitative evaluation with MR angiography. Front Neurol. 2022;13: 858805.

PubMed  PubMed Central  Google Scholar 

Wang B, Hui K, Xiong J, Yang C, Cao X, Zhu G, et al. Effect of subclavian vein diameter combined with perioperative fluid therapy on preventing post-induction hypotension in patients with ASA status I or II. BMC Anesthesiol. 2024;24(1):138.

PubMed  PubMed Central  Google Scholar 

Wang J, Li Y, Su H, Zhao J, Tu F. Carotid artery corrected flow time and respiratory variations of peak blood flow velocity for prediction of hypotension after induction of general anesthesia in elderly patients. BMC Geriatr. 2022;22(1):882.

CAS  PubMed  PubMed Central  Google Scholar