These findings could contribute to the higher rate of cardiovascular events in smokers.

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In isolated mitral stenosis, pulsed-wave tissue Doppler may be used for the detection of RV diastolic pathology. Diastolic functions of RV may deteriorate in the presence of normal systolic functions in symptomatic patients with isolated mitral stenosis.

As a result, sympathetic nervous system activity is increased in patients with mitral stenosis and sympathetic overactivity worsens their symptoms. Most significant factors that affect autonomic functions in these patients are left atrial dilatation and mitral valve area.