肥厚型心肌病OR运动员心脏解析课件.ppt
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- 肥厚 心肌 OR 运动员 心脏 解析 课件
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1、A Case of Hypertrophic Cardiomyopathy RegressionFrom Circ Cardiovasc Imaging.2015;8:Kebed,MD,Mayo Clinic CaseAn 18-year-old man was referred for evaluation after amarkedly abnormal ECG was discovered at a professional hockey scouting event.He was otherwise healthy and asymptomaticHe had no family hi
2、story of cardiomyopathies or sudden unexplained death.ECGUCGA contrast enhanced transthoracic echocardiogram showed apical HCM with a maximal LV wall thickness of 24 mm and spade-like appearance LV chamber size and systolic function were normal without dynamic obstruction.Diastolic function assessme
3、nt showed indeterminate diastolic function gradeMRIthe apex and anterior septum measured 25 and 13 mm,First pass perfusion was normal,but postcontrast images demonstrated patchy areas of late gadolinium enhancement suggestive of fibrosisMRIHolterExercise ECG and 24-hour Holter monitor showed no vent
4、ricular arrhythmiasgenetic testingOn genetic testing,a de novo HCM associated mutation in MYH7-encoded myosin heavy chain gene at position 530(p.Ile530Val)was identified.The patients parents and 2 siblings,all phenotype negative for HCM,tested negative for the mutation.The patient was counseled on t
5、he natural history of HCM and the risk of sudden death with competitive athletics.None of the standard sudden death risk markers were present at the initial evaluation,and therefore there was no indication for an implantable cardioverter defibrillator.The patient discontinued his rigorous athletic t
6、raining,but continued to lead a relatively active lifestyleHe was seen for follow-up 14 months after the initial diagnosis.Repeat cardiac MRI showed complete resolution of the LV hypertrophy with maximal wall thickness of 10 mmat the apex However,the patchy areas of late gadolinium enhancement were
7、unchanged On repeat noncontrast echocardiogram,maximum thickness was 12 mm at the apex.The ST depression and deeply inverted T waves were less prominent on his repeat ECGECGMRIBecause of the regression of hypertrophy after detraining and negative genetic testing in family members,genetic testing was
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