Adsumelli 2003.

Study characteristics
Methods	RCT
Participants	50 women Inclusion criteria: healthy term parturients, elective CS under spinal anaesthesia, ASA I‐II. Exclusion criteria: women with chronic hypertension, multiple pregnancy, pregnancy‐induced hypertension, diabetes mellitus, body weight > 110 kg and contraindications to a spinal anaesthetic Setting: USA
Interventions	Compression device versus no compression device Group 1 (n = 25): sequential compression device; with thigh‐high sleeves and a preset pressure of 50 mmHg Group 2 (n = 25): no sleeves on lower limbs Preloading with 20 mL/kg Ringer's lactate Standardised anaesthetic technique and dose for all women
Outcomes	Maternal: hypotension Neonatal: Apgar score < 8 at 5 min
Notes	Hypotension: defined as decrease MAP measurement by > 20% of baseline
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Randomisation method unknown
Allocation concealment (selection bias)	Unclear risk	"Sealed envelopes." No further detail given
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Hypotension treated by an anaesthetist who was blinded to the assigned group
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not reported
Selective reporting (reporting bias)	Low risk	Not apparent
Other bias	Low risk	Not apparent