What if it's not his heart?  Let's work from the tenuous assumption that we're not idiots who've spent days examining a heart up, down, sideways "ï¿½ declaring it healthy just a few hours before it basically shut down. So we need to think about causes in places you didn't look.
Sinoatrial block.
And his dad, and his grandpa, and ï¿½ Extreme bradycardia could be caused by sick sinus syndrome.
And his dad, and his grandpa, and ï¿½ Extreme bradycardia could be caused by sick sinus syndrome. [SEP] Sinoatrial block. [SEP] What if it's not his heart?  Let's work from the tenuous assumption that we're not idiots who've spent days examining a heart up, down, sideways "ï¿½ declaring it healthy just a few hours before it basically shut down. So we need to think about causes in places you didn't look.