Study	Reason for exclusion
DECREASE 2010	The principal investigator, Don Poldermans, of the DECREASE studies was dismissed by Erasmus University in Rotterdam for alleged scientific misconduct that included failing to obtain written patient consent and negligent data collection. Data from these trials cannot be relied upon as valid. The Erasmus Medical Center published a full copy of the report (Erasmus MC 2012) which can be found here: http://www.erasmusmc.nl/5663/135857/3675250/3706798/Integrity_report_2012‐10.pdf?lang=en
Duranay 2010	Outcomes of the study (estimated glomerular filtration rate, serum creatinine and nitrate levels) were not within the scope of this review
Juul 2006	Outcome data for people undergoing vascular surgery, separately, were not available
Mangano 1996	Outcome data for people undergoing vascular surgery, separately, were not available
POISE Trial 2006	Outcome data for people undergoing vascular surgery, separately, were not available
Ralley 1988	Outcomes of the study (haemodynamic outcomes) were not within the scope of this review
Stone 1988	Outcomes of the study (myocardial ischaemia) were not within the scope of this review. If future data from the study is presented that includes outcome data relevant to our review, this study may be considered for inclusion
Suttner 2009	Outcomes of the study (myocardial ischaemia) were not within the scope of this review. If future data from the study is presented that includes outcome data relevant to our review, this study may be considered for inclusion
Zaugg 1999	Outcome data for people undergoing vascular surgery, separately, were not available