title: The terminal P wave vector in lead V1 of the electrocardiogram in healthy young airmen.
abstract: The terminal P wave vector in lead V1 of the electrocardiograph (V1PTV) was abnormal in 93 (3.2%) of 3119 healthy recruits into the Royal Air Force of mean age 19 (SD 4) years. The inference that an abnormal V1PTV indicates left atrial enlargement should be made with caution in otherwise healthy young men.
mesh_terms: D000293:Adolescent; D000328:Adult; D000337:Aerospace Medicine; D004562:Electrocardiography; D006321:Heart / Q000502:physiology / Q000503:physiopathology; D006801:Humans; D008297:Male; D006113:United Kingdom