vq scan pulmonary hypertension

Lung ventilation-perfusion scans (V/Q scans) are crucial for diagnosing pulmonary arterial hypertension (PAH). They evaluate the integrity of pulmonary vasculature by assessing the balance between lung ventilation and perfusion. PAH is a severe pulmonary vascular condition that can impose a significant strain on the heart, potentially leading to heart failure.

During a V/Q scan, a marked discrepancy between lung perfusion and ventilation may suggest the presence of PAH. This can stem from a variety of conditions, including pulmonary embolism, chronic obstructive pulmonary disease (COPD), interstitial lung disease, and idiopathic pulmonary arterial hypertension. The severity of these diseases varies, with pulmonary embolism being among the most critical, necessitating prompt medical intervention.

For patients suspected of PAH, additional diagnostic procedures beyond V/Q scans may be necessary, such as chest X-rays, echocardiograms, and right heart catheterizations, to ascertain the etiology and gauge the severity of the disease. Upon confirmation of the diagnosis, patients should receive treatment under a physician's supervision to manage symptoms and prevent disease progression.