Heart rate ( HR ) , systolic , diastolic and mean arterial pressures ( SAP , DAP and MAP ) , central venous pressure ( CVP ) , mean pulmonary arterial pressure ( mPAP ) , pulmonary arterial occlusion pressure ( PAOP ) , cardiac output , end-tidal carbon dioxide ( Pe'CO 2 ) and core temperature ( CT ) were recorded before lidocaine or saline administration ( Baseline ) and at 20-minute intervals ( T20-T80 ) .