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sinus dysrhythmia |
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sinus dysrhythmia, an irregular heart rhythm characterized by alternate increases and decreases in the heart rate. It is often associated with the vagal effects of respiration, which causes the heart rate to increase on inspiration and decrease on expiration. Nonrespiratory sinus arrhythmia can be caused by multiple sclerosis, digitalis, myocardial infarction, and increased intracranial pressure. Treatment is not necessary unless the patient is symptomatic with decreased cardiac output. Then atropine is given. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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