Using the database of our ongoing randomised , placebo-controlled study ( ClinicalTrials.gov NCT@ ) , we assessed the troponin I concentration area under curve ( measurements : baseline , @ , @ , @ , @ , @ , and @ h post-operatively ) in sulphonylurea-treated diabetics ( n = @ ) and non-diabetics ( n = @ ) without and with remote ischaemic pre-conditioning ( three @-min periods of left upper arm ischaemia with @-min reperfusion each ) during isoflurane anaesthesia before two - to three-vessel coronary artery surgery .