“…Moreover, patients with RA with cardiovascular disease may not have symptoms [48,70,71]. Using the classic Framingham risk equation (based on age, sex, total cholesterol level, high density lipoprotein cholesterol level, smoking history, and systolic blood pressure), patients with RA, SPA, and SLE may fall into a low risk category, leading some to add the presence of a systemic inflammatory disease such as RA, SPA, and SLE to the list of traditional cardiovascular risk factors, or to add a multiplication factor of 1.4 to the calculation of cardiac risk, recognizing that the current risk assessment tools are unreliable and underestimate cardiac risk in patients with RA, SPA, and SLE [51,[72][73][74][75][76]. Major orthopedic surgery is categorized as an intermediate risk procedure in the ACA/AHA guideline, and carries a 1-5% risk of MI or cardiovascular death [68].…”