RESUMO
INTRODUCTION: Use of complementary and alternative medicine (CAM) therapies had been described in patients with disabling, chronic and painful conditions; these characteristics define the majority of vascular surgery (VS) entities. A lack of disclosure about CAM use from patients has been universally cited and may impact effective patient-doctor communication. Our primary objective was to describe CAM use, modalities, perceived benefits, safety, and associated factors among adult patients attending a VS outpatient clinic; we additionally explored patient's attitudes about CAM disclosure with their primary vascular surgeon. METHODS: This cross-sectional study invited 223 consecutive outpatients to an interview where the ICAM-Q (International Complementary and Alternative Medicine Questionnaire) and the PDRQ-9 (Patient-Doctor Relationship Questionnaire-9 items) were applied. In addition, sociodemographics, vascular disease and treatment-related information, comorbidity, and disease severity characteristics were obtained. Appropriated statistics was used; multiple logistic regression analysis identified factors associated to CAM use. All statistical tests were two-sided, and a p value ≤ 0.05 was considered significant. IRB approval was obtained. RESULTS: Patients recruited were primary females (69%) and had a median age of 65 years (54-75). Most frequent vascular diagnoses were chronic venous insufficiency (36.2%) and peripheral artery disease (26%). There were 104 (46.6%) patients who referred CAM use, primarily self-helped practices (96%), and use of herbal, vitamins, or homeopathic medicines (23.7%). Overall, the majority of the patients perceived CAM modalities helpful and 94.6% denied any adverse event. Female sex (OR: 1.768, 95% CI: 0.997-3.135, p = 0.051) and hospitalization during the previous year (OR: 3.173, 95% CI: 1.492-6.748, p = 0.003) were associated to CAM use. The majority of the patients (77%) agreed about CAM disclosure with their primary vascular surgeon; meanwhile, among CAM users, up to 54.9% did not disclose it, and their main reasons were "Doctor didn't ask" (32%) and "I consider it unnecessary" (16%). The patient-doctor relationship was rated by the patients with high scores. CONCLUSIONS: CAM use is frequent and perceived as safe and beneficial among VS outpatients; nonetheless, patients do not disclose CAM use with their primary vascular surgeons, and a wide range of reasons are given by the patients that prevent effective and open communication.