Souissi 2013.

Methods	RCT, parallel design,National Institute of Neurology, La Rabta, Tunisia. Sample size: Not mentioned
Participants	Total: 30 adult patients (> 18 years), Age [mean (standard deviation)]: Not mentioned Gender (male/female): Not mentioned Inclusion:aged > 18 years Exclusion:ASA physical status IV or V, preoperative electrolyte disorder, pregnant woman, patient with history of congestive heart failure or kidney disease, and patient undergoing surgery for <1 hour
Interventions	HTS: 7.5% HTS Control: 20% mannitol
Outcomes	1. Brain relaxation
Notes	4‐point scale: No details available