1. Utility of clinical risk predictors for preoperative cardiovascular risk prediction 
B.M. Biccard, R.N. Rodseth 
British Journal of Anaesthesia 
Volume 107, Issue 2, Pages (August 2011)
DOI: /bja/aer194
Copyright © 2011 The Author(s) Terms and Conditions

2. Fig 1
One year mortality stratified according to NYHA functional classification in a simulated heart failure patient. (Calculated with Seattle Heart Failure Model: 50 yr male with ischaemia, 80 kg, ejection fraction 45%, systolic AP 140 mm Hg, no medication, Hb 12 g dl−1, lymphocytes 24%, uric acid 9 mg dl−1, total cholesterol 190 mg dl−1, sodium 137 mmol litre−1, no devices, no interventions);
British Journal of Anaesthesia  , DOI: ( /bja/aer194)
Copyright © 2011 The Author(s) Terms and Conditions

3. Fig 2
Increasing coronary heart disease (CHD) risk with increasing age in a hypothetical white male diagnosed with type II diabetes at the age of 30 yr. [Calculated with the UKDPS risk engine (v 2.0), fixed variables used in the model: HbAIc 8%, systolic AP 160 mm Hg, total cholesterol 6 mmol litre−1, HDL cholesterol 0.6 mmol litre−1, smoker.]
British Journal of Anaesthesia  , DOI: ( /bja/aer194)
Copyright © 2011 The Author(s) Terms and Conditions

4. Fig 3
A light cone has at its centre a point or event (E) in time and space, from which two cones radiate out. The first, the past light cone, represents the set of all possible past events that may reach and influence the central event (E). The future light cone represents the set of all events that may be influenced by the event (E).
British Journal of Anaesthesia  , DOI: ( /bja/aer194)
Copyright © 2011 The Author(s) Terms and Conditions

5. Fig 4
The ideal risk assessment point is designated by the letter R. The accuracy of our risk assessment will be determined by how well our sampling tool reflects the R point; hence prediction at point B is preferable to point A. Similarly, the accuracy of the prediction will degrade as we move away from the R point; hence the performance will be better at point C than point D.
British Journal of Anaesthesia  , DOI: ( /bja/aer194)
Copyright © 2011 The Author(s) Terms and Conditions