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.
A pacemaker is an electrical device. It is implanted under your skin to help manage irregular heartbeats called arrhythmias. Modern pacemakers consist of two parts. One part contains the battery and the electronics that controls your heartbeat. The other part is one or more leads, which send signals to your heart.