The early manifestations of rheumatic heart disease include rheumatic myocarditis or pericarditis, sometimes accompanied by significant pericardial effusion. In later stages, there may be thickening of the pericardium, presenting as constrictive pericarditis. Some patients may also develop severe mitral stenosis, aortic stenosis, or insufficiency. When the disease reaches a certain level of severity, the patient can experience cardiac failure and systemic sodium and water retention. In such cases, it becomes necessary to control water intake. Therefore, in the early stages of rheumatic heart disease when there is no cardiac failure, it is possible to drink more water. However, when patients experience severe cardiac failure, edema, and similar conditions, it is not advisable to drink excessive amounts of water.