My husband, has been experiencing what he refers to as an electrical shock in his left armpit through shoulders. It has happened 2 times in the last 3 hours. History, he had a heart attack in 2008, quadruple bypass. Family history of heart issues. He had mentioned several times over the last week that when he reaches for things he gets a sharp (electrical shock) pain in his wrist. He is not having chest pain, and was resting when the pain occurred and it only lasted a few seconds. Any ideas?