Perioperative Doppler ultrasound assessment of portal vein flow pulsatility in high-risk cardiac surgery patients: a multicentre prospective cohort study

André Denault, Étienne J. Couture, Étienne de Médicis, Jae‐Kwang Shim, Michael Mazzeffi, Reney Henderson, Stéphan Langevin, Richa Dhawan, Martin Michaud, Dominik P. Guensch, David Berger, Joachim Erb, Caroline E. Gebhard, Colin Royse, David M. Levy, Yoan Lamarche, François Dagenais, Alain Deschamps, Georges Desjardins, William Beaubien–Souligny