Recently I've been waking up several times a night with sinus tachycardia. When I bear down it goes away instantly. But sometimes I'll awake from a very deep sleep and feel almost dead, :( like I'm about the faint -- also with the tachycardia and what feels like very low blood pressure. Bearing down always brings it back to normal as the heart puts in a few really strong normal beats and the blood flow all normalizes and I begin to feel better - but what is that? I have no pain and I have never passed out. It's happening almost every night, but some nights I don't have any episodes.
The first two times this happened I went to ER and then followed up with a cardiologist. They can't find anything wrong.
Current Doc discovered I've had untreated Lyme since 2002
I'm starting treatment this week
And to add insult to injury, I've been diagnosed with autoimmune Hashimoto's and I have low thyroid hormone. Doc thinks Lyme triggered it. Going to see an Endocrinologist this week as thyroid also feels swollen.
The heart at rest beats a normal 70 bpm so I don't think it's hyperthyroidism since blood work shows hypothyroidism, and I ONLY experience the tach when sleeping. Resting blood pressure always slightly low at 105/70.
Thank you so much if you have any ideas or experiences as I could really use some sleep.:cool: