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2. Pacemaker - Wikipedia

   en.wikipedia.org/wiki/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 ...

3. Cardiac pacemaker - Wikipedia

   en.wikipedia.org/wiki/Cardiac_pacemaker

   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, which regulates the heart’s sinus rhythm .

4. Arnold Schwarzenegger just got a pacemaker. Here's what to ...

   www.aol.com/lifestyle/arnold-schwarzenegger-just...

   Patients who have fewer or less severe health issues may have a nearly normal life expectancy with a pacemaker, according to the Cleveland Clinic. As for Schwarzenegger, he’s barely missed a beat.

5. 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. [1]

6. 8 Common Cardiovascular Diseases for Men & How to Prevent Them

   www.aol.com/8-common-cardiovascular-diseases-men...

   Stent procedure. Coronary artery bypass surgery. Heart transplant. Radiofrequency ablation. When heart arrest occurs outside of a hospital, the main treatment is a shock with an automatic external ...

7. Norway's King Harald gets pacemaker to boost heart rate - AOL

   www.aol.com/news/norways-king-harald-gets...

   OSLO (Reuters) -Norway's King Harald received a pacemaker implant on Tuesday in a scheduled operation to help compensate for a low heart rate, the royal court said. The 87-year-old was ...