Textbook outcomes as a novel patient-centric metric to inform carotid revascularization

The recent National Coverage Determination surrounding carotid stenting and shared decision-making has ushered in an era of patient-centric carotid care. However, historical carotid intervention endpoints have lacked patient-centered nuances to inform clinical decisions. Accordingly, we aimed to create a comprehensive novel, patient-centric textbook outcome (TO) to inform treatment paradigms.

We developed a novel composite TO for patients who underwent carotid revascularization reflecting a combination of patient-centric outcomes derived from previous patient interviews and the published literature. We defined a TO to include freedom from postprocedural neurologic events, myocardial infarction, cranial nerve injury, return to the operating room, reperfusion syndrome, or access site complications. The endpoint also included discharge on postprocedural day 1, home discharge, and 30-day survival. We measured the risk of a TO vs non-TO among asymptomatic patients undergoing carotid endarterectomy (CEA), transcarotid artery revascularization (TCAR), or transfemoral carotid artery stenting (TF-CAS) in the Vascular Quality Initiative (VQI) from 2016 to 2023.

We studied 72,778 patients who underwent carotid revascularization, 70.3% CEA, 21.0% TCAR, and 8.7% TF-CAS. The mean age across all patients was 71.6 ± 8.4 years, 39.9% were female, and 91.7% were White. A TO was achieved in 76.9% of patients, and was 76.7% after CEA, 76.5% after TCAR, and 79.1% after TF-CAS (P < .001). Postprocedural length of stay was 2 days or more in 21.0% of patients, and was 21.1% after CEA, 21.6% after TCAR, and 18.4% after TF-CAS (P < .001). Postprocedural neurologic events occurred in 1.0% of patients after CEA, 1.3% after TCAR, and 1.4% after TF-CAS (P = .037). A sensitivity analysis of the TO that did not include postprocedural length of stay demonstrated a non-TO in 5.9% of patients after CEA, 5.5% after TCAR, and 6.3% after TF-CAS (P = .070). Patients who did not achieve a TO had inferior 5-year survival compared with patients who did have a TO across all three cohorts (log-rank P < .001).

This novel patient-centric endpoint demonstrated that a substantial percentage of patients fail to achieve a TO in current practice, and that failure to achieve a TO was associated with inferior 5-year survival. These findings are particularly important in light of the recent Medicare mandate for a shared decision-making approach to carotid care delivery and may help to best align patient preferences with procedure type.