Trouble Staying Asleep

I go to sleep just fine around 9PM nightly.  However around 3 - 4am daily I am awakened by my heart pounding hard and racing fast!  My sleep is fitful.

Up until my surgery June 5th, I was using a CPAP machine quite successfully.  I had not used it since surgery.  I went to the pulmonologist at the sleep lab yesterday.   He thought this was adrenaline released in response to apnea and instructed me to use the CPAP.

I used the CPAP last night.  My sleep was less fitful but I still woke up at 3:30 with the pounding racing heartbeat.

Any thoughts?

I would call your primary care and let your surgeon know. Don't mess w palpitations.

I wake every night at 3-4am but its stress and a mind that won't turn off.

Good luck and let us know your ok.

I too am not sleeping well since surgery. I haven't had a complete nights sleep since surgery without waking up. I will wake up like every 2 to 3 hours. I hate it. I just want to sleep & feel like I've slept at least one night. Grrr...

Have you looked into it possibly being anxiety related? 

low Blood sugar?  Adrenaline response to low blood sugar ?? google hypoglycemia...