Thank you for your query at DoctorSpring.com
What you wrote makes a lot of sense. However, in your case it is not possible for the wood particle to travel to the heart. So I am not worried about arrhythmias or other forms of death.
If it reaches myocardium it won't cause sudden death.
Arrhythmia can occur if some foreign body comes and blocks the conduction in some way.
Patient replied :
1. If particle by accident prick the myocardium and move little bit... can people feel the pain or there must be arthritis, eventhough particle is 3-4mm.
There are two different opinions. There is no pain receptors in myocardium. So people cannot feel pain...
Another opinion is surely know the pain and myocardium is very sensitive tissue and two types of nerve and pain receptors... so absolutely know...
Which one is right?
Yes there will definitely be a pain in the myocardium and moreover it will initiate arrhythmias.