Pediatric sinus arrhythmia

Sinus arrhythmia refers to the irregular arrhythmia of the sinoatrial node, which makes the heart rate appear faster and slower. The pulse speeds up during inhalation and slows down during expiration. The difference between the speed and the speed is 0.12s. A common physiological phenomenon of the period. This phenomenon is more common in bradycardia, but it disappears after fever, exercise, or taking atropine. In a few cases, the arrhythmia is more obvious, and the second-degree atrioventricular block or premature beat may be suspected. An electrocardiogram should be used for identification. Swim heart rhythm is more common in pediatrics, because the sinus node pacemaker moves in the sinoatrial node or between the sinoatrial node and the atrioventricular node. P wave morphology and PR interval change periodically, often with sinus Sexual arrhythmia. Its clinical significance is the same as sinus arrhythmia.