title: Xylocaine viscous as an aid in the differential diagnosis of chest pain.
abstract: Sixty patients with chest pain, chest and epigastric pain, or predominantly epigastric pain, not explained by electrocardiographic (EKG) changes or pulmonary findings, were given 20 cc of Xylocaine Viscous orally. Thirty-seven out of 60 experienced complete or almost complete relief within 10 to 15 minutes. Of this group, none were found to have suffered a myocardial infarction. Of the 23 patients who did not experience pain relief, six had a myocardial infarction and seven were diagnosed as having cardiac angina. Determination of serum lidocaine levels after oral ingestion of 20 cc of Xylocaine Viscous in patients with normal gastric function demonstrated a maximum level of 0.55 mu/ml--a serum level unlikely to result in adverse side effects.
mesh_terms: D000284:Administration, Oral; D003327:Coronary Disease / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D008012:Lidocaine / Q000008:administration & dosage / Q000627:therapeutic use*; D008875:Middle Aged; D010146:Pain / Q000188:drug therapy*; D013909:Thorax
chemical_list: D008012:Lidocaine