A multiregional registry experience using an electronic medical record to optimize data capture for longitudinal outcomes in endovascular abdominal aortic aneurysm repair.
OBJECTIVE
Registries have been proven useful to assess clinical outcomes, but data entry and personnel expenses are challenging. We developed a registry to track patients undergoing endovascular aortic aneurysm repair (EVAR) in an integrated health care system, leveraging an electronic medical record (EMR) to evaluate clinical practices, device performance, surgical complications, and medium-term outcomes. This study describes the registry design, data collection, outcomes validation, and ongoing surveillance, highlighting the unique integration with the EMR.


METHODS
EVARs in six geographic regions of Kaiser Permanente were entered in the registry. Cases were imported using a screening algorithm of inpatient codes applied to the EMR. Standard note templates containing data fields were used for surgeons to enter preoperative, postoperative, and operative data as part of normal workflows in the operating room and clinics. Clinical content experts reviewed cases and entered any missing data of operative details. Patient comorbidities, aneurysm characteristics, implant details, and surgical outcomes were captured. Patients entered in the registry are followed up for life, and all relevant events are captured.


RESULTS
Between January 2010 and June 2013, 2112 procedures were entered in the registry. Surgeon compliance with data entry ranges from 60% to 90% by region but has steadily increased over time. Mean aneurysm size was 5.9 cm (standard deviation, 1.3). Most patients were male (84%), were hypertensive (69%), or had a smoking history (79%). The overall reintervention rate was 10.8%: conversion to open repair (0.9%), EVAR revision (2.6%), other surgical intervention (7.3%). Of the reinterventions, 27% were for endoleaks (I, 34.3%; II, 56.9%; III, 8.8%; IV and V, 0.0%), 10.5% were due to graft malfunction, 3.4% were due to infection, and 2.3% were due to rupture.


CONCLUSIONS
Leveraging an EMR provides a robust platform for monitoring short-term and midterm outcomes after abdominal aortic aneurysm repair. Use of standardized templates in the EMR allows data entry as part of normal workflow, improving compliance, accuracy, and data capture using limited but expert personnel. Assessment of patient demographics, device performance, practice variation, and postoperative outcomes benefits clinical decision-making by providing complete and adjudicated event reporting. The findings from this large, community-based EVAR registry augment other studies limited to perioperative and short-term outcomes or small patient cohorts.
Department of Surgery, Southern California Permanente Medical Group, San Diego, Calif. Electronic address: robert.j.hye@kp.org.
Robert J
RJ
Hye
Department of Surgery, UC San Diego, San Diego, Calif.
Tazo S
TS
Inui
Surgical Outcomes and Analysis, Southern California Permanente Medical Group, San Diego, Calif.
Faith F
FF
Anthony
Surgical Outcomes and Analysis, Southern California Permanente Medical Group, San Diego, Calif.
Mary-Lou
ML
Kiley
Department of Surgery, The Permanente Medical Group, South San Francisco, Calif.
Robert W
RW
Chang
Department of Vascular Surgery, Colorado Permanente Medical Group, Denver, Colo.
Thomas F
TF
Rehring
Department of Vascular Therapy, Hawaii Permanente Medical Group, Honolulu, Hawaii.
Nicolas A
NA
Nelken
Department of Surgery, The Permanente Medical Group, Santa Clara, Calif.
Bradley B
BB
Hill
D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000401:mortality / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects* / Q000295:instrumentation / Q000706:statistics & numerical data*; D015897:Comorbidity; D003625:Data Collection / Q000706:statistics & numerical data*; D057286:Electronic Health Records / Q000706:statistics & numerical data*; D057510:Endovascular Procedures / Q000009:adverse effects* / Q000401:mortality / Q000706:statistics & numerical data*; D004867:Equipment Design; D006801:Humans; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data*; D011183:Postoperative Complications / Q000209:etiology* / Q000401:mortality / Q000601:surgery*; D011446:Prospective Studies; D012042:Registries / Q000706:statistics & numerical data*; D012086:Reoperation / Q000706:statistics & numerical data; D012307:Risk Factors; D015607:Stents / Q000009:adverse effects* / Q000706:statistics & numerical data*; D016019:Survival Analysis