I am a male in my 40's with elevated cholesterol, high triglycerides, slight hypertension and pre-diabetic. I do take crestor, tricor, and metformin to control those and they are now normal. I take Lisonopril for BP. A few days ago, I woke up from sleep with my heart racing, slight angina and feeling a bit dizzy. Went to the ER where they did a EKG, and echo and chest x-ray. None of them indicated any blockage. However, my HR didn't go down even when I was lying down and on IV fluids. It stayed steady art 110-120 and my BP was high. They did a test to measure my BP while I was lying down (135/100) and when I was standing up (168/117) .. so my BP went up on standing. They sent me home with a beta-blocker (Metoprolol) and that slightly lowered my heart rate to the 90s and my BP is around 130/90.
The doctors couldn't figure out the cause for the episode. I am resting at home at the moment, but I am concerned about taking the beta-blockers. Will this mask a larger issue? I read that higher HR rate typically is accompanied with lower BP, but with me it is the opposite. Also, right after I take the BB, I feel a bit numb and woozy ... it does go away after a while. And a few hours after I take the BB, the HR gets back to the 100s...
Any advice on what could be the underlying cause? How concerned should I be?