** Thanks for contacting with your health concern 1. As there is the presence of silent cardiovascular abnormalities [ since you are asymptomatic apart from orthostatic hypotension it may be a sign of coronary artery disease [CAD] thus remain under the constant and regular supervision of Cardiologist. 2. I would recommend you the check with - ECG - Holter s monitoring - Cardiac ECHO and - Stress test and only if the results are negative your anxiety could be stress related or because of anemia. PS. It could be the other way: i.e. irregular heartbeat [arrhythmia] is causing significant fear/anxiety and the further worsening of the symptoms. 3. Always contact your cardiologist before making any changes to your therapy.