A 25-year-old woman complains of shortness of breath and palpitation after exercise for 3 years.PE：cardiac dullness shifted to the lower and left，narrow cardiac waist，the heart shaped like a boot，which should be considered the first diagnosis

  • A: aortic valve insufficiency
  • B: pulmonary heart disease
  • C: dilated cardiomyopathy
  • D: pure mitral stenosis
  • E: hypertensive heart disease

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