ABSTRACT Coronavirus disease (COVID) toes are pernio-like skin lesions associated with severe acute respiratory syndrome coronavirus 2. We observed pernio-like skin findings presenting after a Pfizer BioNTech vaccine, which significantly worsened after an infusion of rituximab. This suggests that the mechanism for COVID toes is interferon activation. Military providers may avoid unnecessary referrals for this self-limiting condition by anticipating this adverse effect.
Mayo Clinic Atlas of Regional Anesthesia and Ultrasound-Guided Nerve Blockade
Abstract Mayo Clinic Atlas of Regional Anesthesia and Ultrasound-Guided Nerve Blockade is a practical guide for residents-in-training and clinicians to gain greater familiarity with regional anesthesia and acute pain management to the upper and lower extremity. It emphasizes the importance of a detailed knowledge of applied anatomy to safely and successfully performing regional anesthesia. It also provides and overview of the emerging field of ultrasound-guided regional anesthesia, which allows reliable identification of both normal and variant anatomy. Mayo Clinic Atlas of Regional Anesthesia and Ultrasound-Guided Nerve Blockade contains more than 200 beautifully illustrated anatomic images important to understanding and performing regional anesthesia. Corresponding ultrasound images are provided when applicable.