atprep.在；向；达n.基普(老挝货币基本单位)(=att)；[化]砹(极不稳定放射性元素)abbr.密封的(=airtight)abbr.气温(=air temperature)Atsak阿特萨克

1. Atrial fibrillation is much more common than atrial flutter.
   心房纤颤比心房扑动更为常见。
2. Carotid sinus pressure has little or no effect on the atrial rate in atrial flutter.
   压迫颈动脉窦对心房扑动时的心房率几乎不起作用。