VAAT, or vasoactive agent treatment, is a type of therapy used in the management of acute pulmonary embolism (PE). PE is a condition that occurs when a blood clot becomes lodged in a blood vessel in the lungs, which can lead to serious complications such as heart failure, lung damage, and even death. VAAT involves the use of medications that help to improve blood flow to the lungs and reduce the risk of further complications. These medications may include vasodilators, which help to relax and widen the blood vessels, and thrombolytics, which break down blood clots. VAAT is typically administered in a hospital setting, and may be used in conjunction with other treatments such as anticoagulation therapy or mechanical thrombectomy. It is important to work closely with a healthcare provider to determine the most appropriate treatment approach for your specific situation.