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  2. Cardiac pacemaker - Wikipedia

    en.wikipedia.org/wiki/Cardiac_pacemaker

    The cardiac pacemaker is the heart's natural rhythm generator. It employs pacemaker cells that produce electrical impulses, known as cardiac action potentials, which control the rate of contraction of the cardiac muscle, that is, the heart rate. In most humans, these cells are concentrated in the sinoatrial (SA) node, the primary pacemaker ...

  3. Artificial cardiac pacemaker - Wikipedia

    en.wikipedia.org/wiki/Artificial_cardiac_pacemaker

    The primary purpose of a pacemaker is to maintain an even heart rate, either because the heart's natural cardiac pacemaker provides an inadequate or irregular heartbeat, or because there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow a cardiologist to select the optimal pacing ...

  4. Aortic valve replacement - Wikipedia

    en.wikipedia.org/wiki/Aortic_valve_replacement

    Common complications include disturbances to the heart's rhythm (heart block), which typically require the permanent insertion of a cardiac pacemaker. [33] Recovery from aortic valve replacement takes about three months if the patient is in good health.

  5. Cardiac nurse, 22, had chest pains on duty — turns out she ...

    www.aol.com/news/cardiac-nurse-22-had-chest...

    Treating a heart block often requires a pacemaker unless it is a “reversible type,” such as Lyme disease-caused heart block, Kowal says.. ... Her recovery was quick and she only needed to take ...

  6. Cardiac resynchronization therapy - Wikipedia

    en.wikipedia.org/wiki/Cardiac_resynchronization...

    Cardiac resynchronisation therapy (CRT or CRT-P) is the insertion of electrodes in the left and right ventricles of the heart, as well as on occasion the right atrium, to treat heart failure by coordinating the function of the left and right ventricles via a pacemaker, a small device inserted into the anterior chest wall.

  7. Cardiac contractility modulation - Wikipedia

    en.wikipedia.org/wiki/Cardiac_contractility...

    As with conventional pacemaker therapy, the cardiac contractility modulation device cannot be implanted if the leads cannot be positioned appropriately in the heart. In cases where there is an artificial heart valve between the right atrium and ventricle (a mechanical prosthetic tricuspid valve), the valve function could be greatly affected by ...

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