References

w1 Devereaux, P.J., Leslie, K., Yang, H. The effect of perioperative beta-blockers on patients undergoing noncardiac surgery � is the answer in? Canadian Journal of Anaesthesia 2004;51:761-767.]

w2 Kohn, C.T., Corrigan, J.M., Donaldson, M.S. To Err is Human. Building a Safer Health System. Institute of Medicine 1999. Washington. Pp 1-16.

w3 Hughes, R.G., Ortiz, E. Medication errors: Why they happen and how they can be prevented. American Journal of Nursing, 2005;105:14-24.]

w4 Bolsin, S. N., Colson, M. The use of statistical process control methods in monitoring clinical performance. International Journal for Quality in Health Care. 2003;15:445.

w5 Schouten, O., Poldermans, D., Visser, L., Kertai, M.D., Klein, J., van Urk, H., et al., Fluvastatin and bisoprolol for the reduction of perioperative cardiac mortality and morbidity in high-risk patients undergoing non-cardiac surgery: Rationale and design of the DECREASE-IV study. American Heart Journal, 2004. 148(6): p. 1047-1052.

w6 Schouten, O., Kertai, M. D., Bax, J. J., Durazzo, A. E. S., Biagini, E. and Boersma, E. Safety of perioperative statin use in high-risk patients undergoing major vascular surgery. The American Journal of Cardiology, 2005. 95(5): p. 658-660.

w7 Wijeysundera, D.N., J.S. Naik, and W. Scott Beattie. Alpha-2 adrenergic agonists to prevent perioperative cardiovascular complications: A meta-analysis. The American Journal of Medicine, 2003. 114(9): p. 742-752.