Pah,
Thank you for the questions.
Echo results can only be interpreted in the context of the particular patient. Having said that, these results do appear consistent with what one might expect in a hypertensive patient. Also, the left ventricular hypertrophy is mild at worst, based on the measurements provided.
Narrow LVOTs are common in smaller female patients. Some petients with a narrow LVOT will have symptoms, however -- it depends on the degree of narrowing for that persons body size.
I think that the PA measurement listed is not PA size, but PA pressure in mmHg. It is mildly elevated and could be consistent with under-treated hypertension. Lung disease from smoking can lead to the RVH and elevated PA pressure. The treatment is to stop smoking.
You would be wise to seek regular follow-up for your blood pressure. I do not think that routine echocardiography in follow-up would be necessary unless your condition changed or other medical problems are present that you have not described.
Talk to your doctor about antibiotic prophylaxis. You haven't provided enough information to answer that question.
Hope that helps.