Hello and welcome to Healthcare Magic. Thanks for your question.
Your symptoms such as sudden tingling
or shock like sensations over one arm could be indicative of a nerve root irritation. Often, a cervical spine
problem like a spondylosis
can cause nerve root compression
/ irritation leading to such abnormal sensations. The nature of your symptoms is unlikely to be due to a heart problem. I would advise you to see a doctor for a complete physical examination and a cervical spine x-ray.
Dr. Sheeba Stephen