RecruitingDevice studyContactless Optical Monitoring of AV Access Using the PatenSee System in Outpatient Hemodialysis PatientsThis is a prospective, non-interventional, single arm, international multicenter study in which up to 120 adult participants with kidney failure requiring regular hemodialysis through arteriovenous (AV) access (AV fistula or graft) will be recruited and evaluated using the PatenSee system. Data captured on the PatenSee system will be analyzed and evaluated against standard of care clinical monitoring of AV accesses.