Study: NCT00848770

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Esmolol, Sodium Nitroprussiate (NPS) or Norepinephrine (NOR)
Description: Esmolol(2,5g /10ml + SG5% 240ml = 10mg/ml). Start with a bolus of 500mcg/kg in 1 min (ou 0,5mg/kg)and maintain the dose of 50mcg/kg/min (or 0,05mg/kg/min). Increase de infusion in 25mcg/kg/min after each 5 min until the randomized SAP or if the heart beat is lower than 60. The maximum dose is 200ug/kg/min (ou 0,2 mg/kg/min). If the randomized SAP do not reach the goal pressure with the maximum dose of esmolol, start a infusion of sodium nitroprussiate (NPS).~NPS (50mg + SG5% 250ml= 200mcg/ml). No bolus. Start the infusion with 0,2 mcg/kg/min and maintain 0,5 a 5mcg/kg/min. Increase de dose each 15 min to a maximum of 10mcg/kg/min.~NOR: (8mg/8ml + SG5% 242ml=32mcg/ml)No bolus. Start 1 to 5 mcg/min to a maximum dose of 20mcg/min.

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Esmolol, Sodium Nitroprussiate (NPS) or Norepinephrine (NOR)
Description: Esmolol(2,5g /10ml + SG5% 240ml = 10mg/ml). Start with a bolus of 500mcg/kg in 1 min (ou 0,5mg/kg)and maintain the dose of 50mcg/kg/min (or 0,05mg/kg/min). Increase de infusion in 25mcg/kg/min after each 5 min until the randomized SAP or if the heart beat is lower than 60. The maximum dose is 200ug/kg/min (ou 0,2 mg/kg/min). If the randomized SAP do not reach the goal pressure with the maximum dose of esmolol, start a infusion of sodium nitroprussiate (NPS).~NPS (50mg + SG5% 250ml= 200mcg/ml). No bolus. Start the infusion with 0,2 mcg/kg/min and maintain 0,5 a 5mcg/kg/min. Increase de dose each 15 min to a maximum of 10mcg/kg/min.~NOR: (8mg/8ml + SG5% 242ml=32mcg/ml)No bolus. Start 1 to 5 mcg/min to a maximum dose of 20mcg/min.

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Esmolol, Sodium Nitroprussiate (NPS) or Norepinephrine (NOR)
Description: Esmolol(2,5g /10ml + SG5% 240ml = 10mg/ml). Start with a bolus of 500mcg/kg in 1 min (ou 0,5mg/kg)and maintain the dose of 50mcg/kg/min (or 0,05mg/kg/min). Increase de infusion in 25mcg/kg/min after each 5 min until the randomized SAP or if the heart beat is lower than 60. The maximum dose is 200ug/kg/min (ou 0,2 mg/kg/min). If the randomized SAP do not reach the goal pressure with the maximum dose of esmolol, start a infusion of sodium nitroprussiate (NPS).~NPS (50mg + SG5% 250ml= 200mcg/ml). No bolus. Start the infusion with 0,2 mcg/kg/min and maintain 0,5 a 5mcg/kg/min. Increase de dose each 15 min to a maximum of 10mcg/kg/min.~NOR: (8mg/8ml + SG5% 242ml=32mcg/ml)No bolus. Start 1 to 5 mcg/min to a maximum dose of 20mcg/min.

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Esmolol, NPS or NOR
Description: We use one of the three drug to manipulate the systolic arterial pressure

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Esmolol, NPS or NOR
Description: We use one of the three drug to manipulate the systolic arterial pressure

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Esmolol, NPS or NOR
Description: We use one of the three drug to manipulate the systolic arterial pressure

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: manipulation of SAP
Description: Esmolol or NPS or NOR

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: manipulation of SAP
Description: Esmolol or NPS or NOR

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: manipulation of SAP
Description: Esmolol or NPS or NOR