Review

Is general anaesthesia for caesarean section associated with postpartum haemorrhage? Systematic review and meta-analysis.

Acta Anaesthesiol Scand. 2013 Oct 1;57(9):1092-102.
Randomized Controlled Trial

6% Hydroxyethyl starch (130/0.4) vs Ringer's lactate preloading before spinal anaesthesia for Caesarean delivery: the randomized, double-blind, multicentre CAESAR trial‡

Br J Anaesth. 2014 Sep 1; 113 (3): 459-67.

Hydroxylethyl starch preload before spinal caesarean section significantly reduces symptomatic hypotension when compared with Ringer's lactate.
pearl
Randomized Controlled Trial

Maternal and neonatal effects of bolus administration of ephedrine and phenylephrine during spinal anaesthesia for caesarean delivery: a randomised study.

Int J Obstet Anesth. 2010 Jan 1; 19 (1): 243024-30.