Higgins 2009.

Methods	Not known
Participants	Women undergoing caesarean section Inclusion criteria: not specified Exclusion criteria: not specified
Interventions	Coload with colloid versus crystalloid solutions Group 1: 500 mL of Ringer's lactate Group 2: 1000 mL of Ringer's lactate Group 3: 500 mL of 6% hydroxyethyl starch All solutions given over 15 minutes immediately following intrathecal administration of hyperbaric bupivacaine 12 µg with fentanyl 15 mg and morphine 150 µg.
Outcomes	Maternal: hypotension; heart rate; stroke volume; cardiac index; systemic vascular resistance Neonatal: —
Notes	Abstract only. Insufficient information to assess risk of bias – first author contacted 26 June 2017, awaiting response