I agree that you need a Holter monitor to catch the hearts activity when you have one of these spells. It could be something that has nothing to do with your heart.
im just putting it out there but have you been tested for anxiety attack/panic attacks? i only ask coz my father has just about the same symptoms and he has been told he has anxiety
Hello.
Do you experience palpitations while being dizzy or before you fall asleep? Does this happen only when sitting calmly?
I can't give you an answer, it may be cardiac related (for example, pauses in the heart rhythm) and it may not, it can be something related to for example sleep apnea. I would recommend wearing a Holter monitor while you have the symptoms. If you have them daily, it should be easy to capture on EKG, so your doctors can rule in or rule out a cardiac cause. If you have pauses in the heart rhythm, treatment is usually a pacemaker.