Impact of early intervention on health status outcomes in peripheral artery disease patients with chronic total occlusion lesions using the PORTRAIT registry.

Objective: To analyze the impact of noninvasive and early invasive treatments on health status in patients with lower extremity peripheral arterial disease (PAD) without and with chronic total occlusions (CTOs) after 12 months of follow-up.
Methods: Using the international (the United States, the Netherlands, and Australia) observational longitudinal Patient-Centered Outcomes Related to Treatment Practices in Peripheral Arterial Disease: Investigating Trajectories registry, we included patients with recent PAD symptoms between June 2011 and December 2015. We assessed the PAD-specific health status at initial visit and the 3-, 6-, and 12-month follow-up using the Peripheral Arterial Questionnaire. On a propensity matched-weighted cohort, we compared patients' characteristics by CTO status and treatment groups as early invasive (revascularization in the 3 months) vs noninvasive (exercise, medical therapies, or smoking cessation). We then assessed the health status trajectory over 12 months, as a three-way interaction between CTO status, treatment groups, and months, using a multilevel generalized linear regression model for repeated measures adjusted for baseline health status with random effects at the site and patient levels.
Results: We included 581 participants, with a mean age of 66.62 ± 9.33 years, 34.3% female, and 90.8% White, of whom 353 (60.8%) were without and 228 (39.2%) had a CTO lesion. Respectively, 96 (27.2%) and 70 (30.7%) patients underwent early invasive treatment (d = 0.07). Although patients with CTO were more likely to have lower resting ABI, multilevel disease, and to experience severe claudication vs their counterparts (|d| ≥ 0.20), patient health status at baseline with CTO was not different from those without CTO, with mean summary scores of 45.14 ± 20.26 vs 45.90 ± 21.24 (d = 0.04), respectively. The trajectory did not differ by CTO status (interaction CTO status × month; P = .517) and was higher in early invasive vs noninvasive treatment (treatment × month; P < .001), regardless of CTO status (CTO status × treatment; P = .981 and CTO status × treatment × month; P = .264). The score increased over time with the largest improvement occurring at 3 months in both noninvasive (non-CTO, +7.82 [95% confidence interval (CI), 4.03-11.60] and CTO, +9.27 95% CI, 4.45-14.09) and early invasive (non-CTO, +26.17 [95% CI, 20.06-32.28] and CTO, +24.52 [95% CI, 17.40-31.64] groups. The mean score in CTO vs non-CTO groups did not differ at each timepoint, with a 12-month mean score of 70.26 (95% CI, 67.87-74.65) vs 71.17 (95% CI, 65.91-76.44) (P = .99) in the noninvasive treatment and 84.93 (95% CI, 78.90-90.97) vs 79.20 (95% CI, 72.77-86.14) (P = .31) in the early invasive treatment.
Conclusions: Patients with symptomatic PAD undergoing early revascularization exhibited better health status over time vs those undergoing noninvasive treatment strategy, irrespective of the presence of CTOs. The degree of the improvement was greater in the 3 months after the initial visit, especially in patients undergoing early revascularization.
Competing Interests: Disclosures C.M.-H. reports unrestricted research grants from Philips, Shockwave, Abbott, and Merck; he is a consultant for Abbott, Terumo, and Cook. K.S. reports unrestricted research grants Philips, Shockwave, Abbott, J&J, and Merck; she is a consultant for Cook, Terumo, and Happify.
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