Bilateral sciatic artery persistence in a patient with infrarenal abdominal aortic aneurysm.

A persistent sciatic artery (PSA) is a rare congenital vascular anomaly, with an estimated prevalence ranging from 0.01% to 0.05%.

Impact of COVID-19 pandemic on surgical volume and outcomes in a terciary care center in Brazil.

Backgrounds: COVID-19 pandemic led to a sharp decline in surgical volume worldwide due to the postponement of elective procedures. This study evaluated the impact of COVID-19 pandemic in surgical volumes and outcomes of abdominal surgery in high-risk patients requiring intensive care unit admission.

Methods: patients admitted for postoperative care were retrospectively evaluated.

Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics.

Magneto-ionics, understood as voltage-driven ion transport in magnetic materials, has largely relied on controlled migration of oxygen ions. Here, we demonstrate room-temperature voltage-driven nitrogen transport (i.e.