Your left ventricle is 5 1mm, which depends on whether you are male or female. Generally, the female left ventricle is less than 50mm, and the male can be 55 mm. But even women are only slightly older 1mm (see for yourself 1mm, it is very subtle, and the ultrasonic error is ok).
But the left atrium seems to be a little bigger, generally 23-38mm at the end of systole. But there may be a little error. The ultrasonic beam of the heart is relatively accurate in the near field. If you leave a certain range, there is a problem of technical distortion.
However, we should be more careful. You did a 24-hour dynamic electrocardiogram and found premature beats, but there were no obvious symptoms. In this case, we generally do not advocate the use of antiarrhythmic drugs, because such premature beats are not serious, and the side effects of antiarrhythmic drugs far outweigh the harm of premature beats, so we generally do not advocate the application. The so-called weigh the pros and cons.
One more thing, I want to remind you that the occasional Holter is only 24 hours, so the possibility of paroxysmal atrial fibrillation cannot be completely ruled out, for example. Maybe you didn't happen in these 24 hours, but at another time, so the possibility of atrial fibrillation causing left atrial enlargement still exists.
Besides, is there any other situation to consider? Because your cardiac output CO is slightly higher than normal, the average person is 3.5-8.0, and the average cardiac index CI is 2.2-5.0L/min.m * 2, you can. But you often have premature beats, so we still have to consider hyperthyroidism. We should consider this arrhythmia regularly. Your cardiac output CO is a little high. So we have to think about it. Specifically, see if you are afraid of sweating too much, losing weight recently, being upset, not sleeping well, etc. You'd better let the doctor see if your eyes and hands are shaking. If so, then you should check your thyroid function. Of course, if these are not as common as thyroid function, there is no need to check them. After all, it costs money.
In fact, there is nothing special about your situation now, so you don't have to take medicine, because frankly speaking, these medicines are not much different from placebos, and even if you eat some starch in capsules, you will have the same effect.
But we should pay attention to proper rest and supplement enough vitamins, from fresh vegetables and fruits.
As for the enlargement of the left atrium caused by myocarditis, frankly speaking, there is no basis, and I can't say no, but if myocarditis is really said, it seems that there is no basis.
Oh, actually, my opinion is to check further. In addition, as I have mentioned, it may even be paroxysmal atrial fibrillation. Just because you only recorded it for 24 hours, this situation may be because you didn't monitor it long enough, which led to missed diagnosis. In fact, the conventional dynamic electrocardiogram is because the monitoring time is too short. Our latest equipment can record events in real time, connect patients with the hospital heart center, and locate your position through GPS.
But before it is clear, it is best not to use more drugs, especially antiarrhythmic drugs. In fact, in the last century 88-89, we used incamide, flucamide and ethambutol to treat frequent ventricular premature beats after acute myocardial infarction, and found that ventricular premature beats were controlled, but the mortality rate was 3-4 times higher, so we are now cautious about the use of antiarrhythmic drugs. Weigh the pros and cons
Generally speaking, metoprolol (betaloc) can still be used, without much negative effect, but propafenone, in fact, is only superficial and has no positive significance to the patient's heart. If your heart is fine, it can be used to control symptoms, but if you have heart problems, such as cardiac insufficiency, you should avoid increasing mortality. However, after analyzing the situation clearly, we should use it carefully according to whether there are any contraindications, and don't use it easily if we don't know the situation.
And radiofrequency catheter ablation, which I must correct everyone's understanding. Up to now, it is still in the experimental stage, generally through pulmonary vein isolation, which can be all pulmonary veins isolation, but also through linear ablation around pulmonary vein orifice, atrial fragmentation potential ablation by Dr. Nademanee and other technologies, but they are all in the clinical research stage and are not particularly perfect. Paroxysmal atrial fibrillation has certainly improved. If it is chronic atrial fibrillation, the success rate is still slightly lower. Specifically, it depends on whether the cardiac catheterization room in your hospital uses three-dimensional electro-anatomical identification systems such as CARTO or EnSite3000. Such equipment is not available in all the top three hospitals in China.
So, this is still a mouse. This is beside the point. Just to explain, lest everyone be too optimistic about the current radiofrequency catheter ablation treatment.
In short, I must ensure that the treatment measures have a clear basis, indicating that my treatment cases are accurate and effective, and the side effects are less than the treatment effect. Otherwise, we should be cautious.
Of course, the medicine you are taking now is nothing serious, but the therapeutic effect is nothing, so I think one is enough.