Mortality Risk Assessment of Total Knee Arthroplasty and Related Surgery After Percutaneous Coronary Intervention
Arvind G. Von Keudell*, Thomas S. Thornhill, Jeffrey N. Katz, Elena Losina
Orthopaedic and Arthritis Center for Outcomes Research, Department of Orthopedic Surgery (EL, JNK), Section of Clinical Sciences, Division of Rheumatology, Immunology and Allergy (EL, JNK), Department of Orthopedic Surgery (AGvK, TST, JNK, EL), Brigham and Women’s Hospital, Boston, MA, Massachusetts; Harvard Medical School, Boston, MA, Massachusetts (TST, JNK, EL); Department of Epidemiology, Harvard School of Public Health (JNK), Department of Biostatistics, Boston University School of Public Health, Boston, MA, Massachusetts (EL), USA
The optimal antiplatelet therapy (APT) treatment strategy after Coronary Artery Stenting (CAS) in non-cardiac surgery, such as total knee arthroplasty (TKA) or urgent TKA-related surgery remains unknown.
We built a decision tree model to examine the mortality outcomes of two alternative strategies for APT after CAS use in the perioperative period namely, continuous use and discontinuation.
If surgery was performed in the first month after CAS placement, discontinuing APT led to an estimated 30-day post TKA mortality of 10.5%, compared to 1.0% in a strategy with continuous APT use. Mortality with both strategies decreased with longer intervals.
Our model demonstrated that APT discontinuation in patients undergoing TKA or urgent TKA related surgery after CAS placement might lead to greater 30-day mortality up to one year.
Keywords: Clopidogrel, Coronary stenting, Mortality, Plavix, Revision total knee arthroplasty, Total knee arthroplasty.
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* Address correspondence to this author at the Department of Orthopaedic Surgery, Brigham and Women’s Hospital, 75 Francis Street, 02441, Boston, MA, Massachusetts, USA; Tel: 617- 732- 9711; E-mail: firstname.lastname@example.org