Neutropenia: An absolute neutrophil count less than 500 cells/mm3 or less than 1000 cells/mm3 with a predicted decline to less than 500 cells/mm3
ANC = WBC x (neutrophil% + band%)
Definition: Syndrome characterized by dysfunction of multiple lumbar and sacral nerve roots in the lumbar vertebral canal due to compression
Anatomy
Background: Patients with penetrating neck trauma can present with a variety of injury patterns including hemorrhagic shock, airway obstruction and neurologic injury. Serious injuries may not be clinically obvious making diagnosis and prompt treatment challenging. Due to the large number of critical structures in the neck, a clear knowledge of the anatomy is necessary for proper evaluation and management.
Epidemiology (Evans 2018)
Definition: Salicylate toxicity is characterized by a constellation of symptoms caused by acute or chronic overdose of salicylate containing compounds. The most common salicylate is aspirin, but the group also includes topical forms of salicylates, methyl salicylate (Oil of Wintergreen), and bismuth subsalicylate (such as in Pepto-Bismol).
Definition: Encephalopathy that occurs secondary to thiamine (vitamin B1) deficiency. While Wernicke encephalopathy is reversible with treatment, it can progress to the irreversible Korsakoff’s syndrome if left untreated.