You can be arrested, charged and convicted of resisting arrest and battery. You need a criminal defense lawyer to assist you when you go to court. Meanwhile, do not post any details online because of potential self incrimination problems. Get a criminal defense lawyer on your side. Your lawyer will tell you not to speak to the police. Everyone has a freedom against self-incrimination but an online site like this one is not private. What you post here may be used against you. No one can say what the evidence is against you so at least remain silent and do not incriminate yourself without speaking to a lawyer.
Read my Legal Guide "Internet Privacy - Not!" if you think it might be helpful.
Check with a lawyer in your locale to discuss more of the details.
Good luck to you.
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You're going to want to set up a face-to-face consultation with a good criminal defense attorney in your area.
Can you be arrested and charged for this? Yes. Will you be convicted? That depends. The police report and the facts of the case will determine what defense you might have, but if you were competent to refuse ambulance care, I'm not sure they had any right to force you to do anything. They would need to justify their actions. If the police and/or EMT were unjustified in what they did, you may have a defense to the resisting charge under a self-defense theory.