From the Guidelines

Yes, diuretics are used in the management of pulmonary hypertension.

Diuretics are commonly used in the treatment of pulmonary arterial hypertension, with 49-70% of patients receiving diuretic therapy in recent clinical trials 1.
The choice of diuretic and dosage is left to the physician's discretion due to the lack of specific trials on diuretic use in pulmonary arterial hypertension and individual variability in patient response 1.
It is essential to closely monitor serum electrolytes and renal function in patients receiving diuretic therapy 1.
The use of diuretics in pulmonary hypertension is supported by guidelines from the European Society of Cardiology, although the level of evidence is graded as C 1.
In contrast, the use of advanced vasoactive agents is not recommended for patients with pulmonary hypertension resulting from left heart disease or hypoxemic lung diseases, highlighting the importance of distinguishing between different types of pulmonary hypertension 1.

From the Research

Diuretics are used in the management of pulmonary hypertension, as they help to reduce fluid overload and alleviate symptoms such as dyspnea and edema 2, 3, 4, 5, 6.
The use of diuretics in pulmonary hypertension is supported by several studies, including a retrospective study that found that the addition of tolvaptan, a new diuretic medication, to targeted drug and traditional diuretic therapies was effective in improving symptoms and reducing blood pressure in patients with pulmonary hypertension 2.
Other studies have also highlighted the importance of diuretics in the management of pulmonary hypertension, including a review of current treatment strategies that listed diuretics as a standard treatment option 3, 4, 5, 6.
The use of diuretics in pulmonary hypertension is often combined with other treatments, such as oxygen supplementation, anticoagulation, and vasodilator therapy, to achieve optimal results 3, 4, 5, 6.

Tolvaptan, a new diuretic medication, has been shown to be effective in improving symptoms and reducing blood pressure in patients with pulmonary hypertension 2.
Traditional diuretic therapy is also commonly used in the management of pulmonary hypertension, often in combination with other treatments 2, 3, 4, 5, 6.

The use of diuretics in pulmonary hypertension can help to reduce fluid overload, alleviate symptoms, and improve quality of life 2, 3, 4, 5, 6.
However, diuretics can also have potential side effects, such as electrolyte imbalances and renal dysfunction, which must be carefully monitored and managed 2, 3, 4, 5, 6.