Evaluation Of A Novel System For RFID Intraoperative Cardiovascular Analytics
WILLIAM HENDRICKS, BS, JOSHUA MECCA, MAHAM RAHIMI, MANUEL R. ROJO, MORITZ C. WYLER VON BALLMOOS, ROSS G. MCFALL, PAUL HADDAD, MARTON T. BERCZELI, REBECCA G. BARNES, ERIC K. PEDEN, ALAN B. LUMSDEN, THOMAS E. MACGILLIVRAY, STUART JAMES CORR, PHD, MENG, MA, BENG.
Houston Methodist Hospital, Houston, TX, USA.
OBJECTIVE: To evaluate a novel technology for real time tracking of RF-Identified (RFID) surgical tools (Biotic System) (Fig. 1), providing intraoperative data analytics during simulated cardiovascular procedures. Ineffective asset management in the operating room (OR) leads to inefficient utilization of resources, contributes to prolonged operative times and increased costs. Analysis of captured data can assist in quantifying instrument utilization, procedure flow, performance and prevention of retained instruments.
METHODS: Five surgeons performed thirteen simulated surgical cases on three human cadavers. Procedures included (i) two AAA repairs, (ii) three CEAs, (iii) two fem-pops, (iv) TAA repair, (v) CABG, (vi) AVR, (vii) ascending aortic aneurysm repair,(viii) heart transplants, and (ix) mitral valve replacement, For each case an average of 139 surgical instruments were RFID-tagged and tracked intraoperatively. Data was captured and analyzed retrospectively.
RESULTS: Of the ~139 instruments tracked across each of the 13 cases, ~55 instruments (~39.5%) were actually used, demonstrating a high level of redundancy. For repeat cases (i.e. CEA/AAA/fem-pop): (i) average instrument usage was 41 ± 3.6 (8.8% variation) for CEA (n=3); (ii) average instrument usage was 69 ± 4.0 (5.8% variation) for AAA (n=2); and (iii) average instrument usage was 48 ± 2.5 (5.3 % variation) for fem-pop (n=2). Results also showed a reduction in end-of-procedure instrument counting times of ~66-73%.
CONCLUSIONS: We report on a method for collecting intraoperative data analytics regarding instrument usage via RFID technology. This system will help refine instrument selection, quantitate instrument utilization and prevent inadvertent retention in a patient. This should help increase efficiency in packaging and sterilization and let surgeons make objective decisions in the composition of surgical trays. 
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