Thanks for your question on Health Care Magic.
I can understand your concern.
No,
oxycodone can not cause heart palpitations.
So this is not a cause for your symptoms.
Sometimes, few patients do get
cardiac arrhythmia (rhythm disturbances in heart) after surgery. And this can cause palpitations.
So we should first rule out arrhythmia in your case.
So get done ecg, 2d echo and Holter monitoring (24 hour continuous monitoring of ecg).
If all these are normal then no need to worry for arrhythmia.
Stress and
anxiety related to surgery can also cause similar symptoms.
So
consult psychiatrist and discuss all these. You may need anxiolytic drugs too.
Don't worry, you will be alright, first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.