Sinus Bradycardia Research Paper

Sinus Bradycardia
Etiology
Sinus Bradycardia is a sinus rhythm with a resting heart rate of sixty beats per minute or less. One’s normal heart rate ranges from sixty to one hundred beats per minute, your heart rate is considered to be slower than normal if your heart rate is less than sixty beats per minute. During a normal heartbeat, an electrical signal is sent from the heart’s sinus node. The sinus node acts as a natural pacemaker located in the upper portion of the right atrium. The sinoatrial node produces electrical impulses that initiate each heartbeat. From the sinus node, the heart beat signal is sent to the atrioventricular node. After the heartbeat has traveled through the antrioventricular node, it is then sent through a bundle of His to the muscles. His is a series of heart-muscle fibers. At often times a highly active athlete can experience a heart rate of fifty beats per minute and show no signs of Sinus Bradycardia. This is because regular exercise has shown to improve the heart’s ability to pump blood.
Signs
On the other hand, a patient experiencing less than fifty beats per minute may then start to show signs of Sinus Bradycardia. Sinus Bradycardia can be caused form hypoxia, hypothyroidism or hypothermia. Again, Sinus Bradycardia is caused by something that has disrupts your normal electrical impulses that control your heart rate. There are many causes that can lead you to believe that you may have Sinus Bradycardia. A few of the causes include, damaged heart tissue due to age, hypertension, which is high blood pressure, a heart disorder at birth, and either rheumatic fever or lupus, both of which are inflammatory