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Jonathan Wilson a Department of Anaesthetics, York District Hospital, York YO31
8HE, b Intensive Care Unit, York District
Hospital, c Pharmacy, York District Hospital
Correspondence to: Dr Wilson
jonathan{at}critbase.demon.co.uk
Objectives:
To determine whether preoperative
optimisation of oxygen delivery improves outcome after major elective
surgery, and to determine whether the inotropes, adrenaline and
dopexamine, used to enhance oxygen delivery influence outcome.
Design:
Randomised controlled trial with double
blinding between inotrope groups.
Setting:
York District Hospital, England.
Subjects:
138 patients undergoing major elective
surgery who were at risk of developing postoperative complications
either because of the surgery or the presence of coexistent medical conditions.
Interventions:
Patients were randomised into three
groups. Two groups received invasive haemodynamic monitoring, fluid,
and either adrenaline or dopexamine to increase oxygen delivery.
Inotropic support was continued during surgery and for at least 12 hours afterwards. The third group (control) received routine
perioperative care.
Main outcome measures:
Hospital mortality and morbidity.
Results:
Overall, 3/92 (3%) preoptimised patients
died compared with 8/46 controls (17%) (P=0.007). There were no
differences in mortality between the treatment groups, but 14/46 (30%)
patients in the dopexamine group developed complications compared with 24/46 (52%) patients in the adrenaline group (difference 22%, 95%
confidence interval 2% to 41%) and 28 patients (61%) in the control
group (31%, 11% to 50%). The use of dopexamine was associated with a
decreased length of stay in hospital.
Conclusion:
Routine preoperative optimisation of
patients undergoing major elective surgery would be a significant and
cost effective improvement in perioperative care.
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