### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I have dysautonomia. I often have abnormal ECG readings when I m feeling very bad. Today s reading is moderate right and mid precordial disturbance. Negative T in V3 V4 with small negative T in V2 V5. When I feel good ECG is normal. When I am symptomatic often my oxygen will show drastic dropping for 2-3 min as low as 67 then raises to mid to high 80 s as soon as I lay down. It s normal. 97/98 when I feel good. It s rare been trying to get in orphan disease clinic. Drs have trouble treating my symptoms. I am 46 I was 35 when I first got sick. My grandmother had same symptoms and passed at 49 of sudden cardiac death. I am under close care of Drs but the past 2 yrs have become more symptomatic. Array of autonomic dysfunction. POTS. Respitory a fib a flutter recently developed neurological raynauds and Printzmetals. I wonder if the Printzmetals causes the abnormal ECG. And oxygen flux. Oh when oxygen drop hr goes high. Usually 140-160 then drops as oxygen rises. Not sure if fast hr makes oxygen look low or low oxygen makes heart go up but I know something interferes with my berating because I can feel it drop and feels like an elephant on my chest before the reading shows it s dropping I can say it s fixing to drop without seeing reading and I know when it gets back up. If it stays in the 80 s I don t feel the change Sorry for info overload. I know my diagnosis. My question would be thoughts on the ECG? Thoughts on how dangerous is the oxygen flux is? And any treatment ideas? ranexa helps the Printzmetals but I can only tolerate it in 2 week intervals due to kidney pain. Take clonazepam .5 when my heart rate won t slow at bed time but can t take during day and drive so my hr runs around 120-140 most days and I manage to function when it gets higher I have to stay home and take clonazepam Can t take beta blockers because of POTS and my blood pressure already runs low causing me to pass out. I take saline to treat that at home. Again Sorry for info overload. I know my diagnosis. My question would be thoughts on the ECG? Thoughts on how dangerous is the oxygen flux is? And any treatment ideas?

### output:

Hello, I have gone through your query. Thanks for using Chat Doctor. Indeed, yours is very complicated case and I need to know entire detail, every investigation to give you proper guidance. Regarding your query on ECG and heart rate, I can tell you that heart rate increases with Chat Doctor. T wave changes which you are describing may be due to coronary spasm of printzmetal angina. Once the spasm subsides they disappear. As regarding POTS, it is small fiber autonomic neuropathy for which take plenty of fluids and very low dose Beta blocker will help to control heart rate without affecting Blood pressure. Have you undergone investigations for Collagen disease? I would be glad to know and discuss with you regarding your case if I get feed back from you best wishes