It depdends: There are many causes of toe spasms/cramps and it is important to identify the source. Cramps and spasms can be due to dehydration and low potassium. But they can also be due to a nerve conditions as well. I recommend you see a specialist for further evaluation. ...Read more.
1 The SA node (called the pacemaker of the heart) sends out an electrical impulse. 2  The upper heart chambers (atria) contract. 3  The AV node sends an impulse into the ventricles.  The lower heart chambers (ventricles) contract or pump.
â¢ Your heart beats too slow or too fast.â¢ Your heart doesnât beat regularly.â¢ Thereâs a block in your heartâs electrical pathways. How does it work? â¢ A pacemaker uses batteries to send electric signals to your heart to help it pump the right way.â¢ The pacemaker is connected to your heart by one or more wires. Tiny electric charges that you canât feel move through the wire to your heart.â¢ Pacemakers work only when needed.