title: [Sinus arrhythmia].
mesh_terms: D000293:Adolescent; D000328:Adult; D001146:Arrhythmia, Sinus / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006262:Health; D006339:Heart Rate; D006706:Homeostasis; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D012119:Respiration; D013997:Time Factors
vernacular_title: K voprosu o sinusovoĭ aritmii.