Symptomatic Upper Extremity Peripheral Artery Disease is Associated With Poor Outcomes and a Broad Spectrum of Etiologies.

The symptomatic upper extremity peripheral artery disease (sUE-PAD) is poorly studied compared with the lower extremity peripheral artery disease (LE-PAD). We aimed to describe sUE-PAD etiologies and outcomes at 2 years. From an observational survey conducted in two French tertiary hospitals, demographic characteristics, etiology, treatment, and outcomes during follow-up were collected on patients with ICD-10 I74.2 code (arterial thrombosis of the upper limbs). We identified 181 patients (53% male, 55 ± 17 years) with hypothenar hammer syndrome (13.8%), cardioembolism (13.3%), atheroma (12.7%), or connective tissue disease (10.5%). No etiology could be found for 16.0% of them. The amputation rate was 13.3%, and lasting symptoms remained at 21.3%. During follow-up, atrial fibrillation occurred in 1 patient and cancer in 4. At 2 years, 59 patients were lost to follow-up, 110 patients were alive, and 12 patients had died. Age and cancer were associated with death. sUE-PAD is not benign, with 20% impaired upper extremity outcome and 10% overall mortality at 2 years. Less frequent than LE-PAD, sUE-PAD presents different characteristics: more women, younger age, and a broad spectrum of etiologies. sUE-PAD requires thorough etiological assessment and is considered to be associated with a severe overall prognosis.