I know sleep apnea can cause anxiety and panic attacks. But can anxiety cause sleep apnea? I have a ventricular aneurysm and PVCs my doctors say are normal. I'm not overweight, I don't drink, not on meds. I've been waking up in the middle of the night gasping for air. I feel like my heart has stopped, I feel a warm sensation in my chest, I can't breathe, I begin to lose consciousness, then I feel a sudden release and my heart beats fast for awhile and I have a huge hangover-like headache for awhile after. And I certainly can't go back to sleep. This has happened a few times during the day too. Is this sleep apnea or an anxiety attack, and what's the proof for either? Thanks.