Final answer:
In patients with rheumatic mitral stenosis, echocardiographic findings include abnormal interventricular septal wall motion, increased right heart dimensions, and increased tricuspid regurgitant jet velocity. However, left ventricular dilatation is not a common finding as the condition primarily affects the left atrium and right heart.
Step-by-step explanation:
Secondary echocardiographic/Doppler findings in patients with rheumatic mitral stenosis may include various anatomical and functional changes as a result of increased resistance to blood flow. These include abnormal interventricular septal wall motion, associated with hemodynamic changes, increased right heart dimensions due to the increased workload on the right heart attempting to pump blood through a narrowed mitral valve, and increased tricuspid regurgitant jet velocity as a result of elevated pressures in the right heart leading to the backflow of blood through the tricuspid valve.
However, left ventricular dilatation is not typically observed in rheumatic mitral stenosis. This condition typically leads to a volume overload on the left atrium and subsequent changes on the right side of the heart as a compensatory mechanism, while the left ventricle is often normal or underfilled and not dilated.