This study included 160 patients treated within 24 hours after subarachnoid hemorrhage , randomized to receive either ( 1 ) EGDT guided by preload volume and cardiac output monitored by transpulmonary thermodilution ( treatment group ) or ( 2 ) standard therapy guided by fluid balance or central venous pressure , assisted by uncalibrated less-invasive cardiac output monitoring during hyperdynamic therapy in patients with clinical or radiological indications of DCI ( control group ) .