Preoperative assessment of inferior vena cava collapsibility index by ultrasound is not a reliable predictor of post-spinal anesthesia hypotension

The use of preoperative inferior vena cava ultrasound to predict anaesthesia-induced hypotension: a systematic review

“…The role of IVCUS to predict PSH was assessed in 15 studies [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Among them 4 prospective observational studies evaluated PSH in a parturient undergoing caesarean section [11][12][13][14].…”

“…In studies among non-parturients, 4 studies were randomized controlled trials [15][16][17]25] and the rest were observational studies [18][19][20][21][22][23][24]. These studies were conducted in procedures such as hernia and hydrocele [16], orthopaedic lower limb surgery [15,[20][21][22], and various other operations performed under spinal anaesthesia.…”

“…These studies were conducted in procedures such as hernia and hydrocele [16], orthopaedic lower limb surgery [15,[20][21][22], and various other operations performed under spinal anaesthesia. These studies included adult patients between 18 and 75 years old [19]. Two studies recruited only elderly patients [22,23].…”

“…Two studies recruited only elderly patients [22,23]. Among the studies done in non-parturient patients, 8 studies excluded American Society of Anaesthesiology (ASA) class ≥ III [15][16][17][18][19][20][21]24], whereas 1 study each included ASA class I-III [25], ASA class II-III [22]and ASA class I-IV [23] Six observational studies evaluated the role of preoperative IVCUS for PIH in non-pregnant patients undergoing elective surgery under GA [26][27][28][29][30][31]. All these studies were done in adult patients.…”

“…The local anaesthetic drugs used for SA were both plain and hyperbaric bupivacaine, isobaric ropivacaine and levobupivacaine [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. The most common adjuvant drug for SA was fentanyl.…”