title: Cardiac arrest following protamine sulfate infusion during regional anesthesia.
mesh_terms: D000765:Anesthesia, Conduction; D005260:Female; D006323:Heart Arrest / Q000139:chemically induced*; D006801:Humans; D007431:Intraoperative Complications / Q000139:chemically induced; D008875:Middle Aged; D011479:Protamines / Q000008:administration & dosage / Q000009:adverse effects*; D012306:Risk
chemical_list: D011479:Protamines