Pulmonary vascular disorders refer to conditions that affect the blood vessels in the lungs. These disorders can lead to increased blood pressure in the pulmonary arteries, which can strain the heart and reduce oxygen supply to the body. Common types include pulmonary hypertension and pulmonary embolism, which can result from various causes such as blood clots or chronic lung diseases. Symptoms of pulmonary vascular disorders may include shortness of breath, fatigue, and chest pain. Diagnosis typically involves imaging tests like CT scans or echocardiograms, and treatment options may include medications, lifestyle changes, or surgical interventions to improve blood flow and reduce symptoms.