RT Book, Section A1 Fernandez, Antonio B. A1 Thompson, Paul D. A2 Crawford, Michael H. SR Print(0) ID 1139748239 T1 The Athlete and the Heart T2 CURRENT Diagnosis & Treatment: Cardiology, 5e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259641251 LK accesscardiology.mhmedical.com/content.aspx?aid=1139748239 RD 2024/03/28 AB ESSENTIALS OF DIAGNOSISThe patient has an extensive history of exercise training.There may be profound sinus bradycardia, sinus arrhythmias, or atrioventricular conduction delays at rest that disappear with exertion.The athlete’s heart may demonstrate four-chamber enlargement and mild left ventricular hypertrophy, but normal diastolic function and B-natriuretic peptide levels. The diastolic wall-to-volume ratio should be < 0.15 mm/m2/mL by magnetic resonance imaging.Most morphologic changes reverse with detraining.