The lead can also sense heart activity and feed this information to the pacemaker. These terms refer to the device's capacity to pace or sense in one or both chambers. In a dual-chamber system, usually one lead is located in the atrium and the other in the ventricle. So signals can be sensed from both chambers, and either or both chambers can be paced to ensure an optimal muscle contraction. This approach is often referred to as synchronization between the two chambers.
Many pacemakers can automatically adapt their impulse rate to changing physiological conditions.
These rate-adaptive features of the pacemaker are connected to a special sensor that looks for changing physical parameters within the body. Changing physiological needs that occur during running, swimming or gardening, for example, are met by the pacemaker with an increase in heart rate. Everybody has experienced a sudden rise in pulse or blood pressure while watching an exciting film or if an unexpected event occurs. Your physician will tell you which pacemaker type meets your needs best. Thanks to this tiny device, people with heart rhythm problems can enjoy a normal life once again.