Treatment of AVMs is elaborate and will be reserved for symptomatic cases. Phase I lesions are often left for observation and shut adhere to-up. This allows baseline suggest and systolic pulmonary arterial strain measurements. Vasodilator therapy, largely milrinone, is administered if pulmonary arterial pressures raise to larger than 25 mm Hg https://www.sgvascularctr.com/understanding-venous-malformation-treatments-in-singapore/