Singsen B, Goldreyer B, Stanton R, Hanson V
Am J Dis Child. 1976 Jan;130(1):72-4. doi: 10.1001/archpedi.1976.02120020074014.
Pediatric polymyositis may be an entity distinct from dermatomyositis. Chronic polymyositis can occur in childhood and, as in adults, may be associated with arrhythmias. Microscopical involvement of the myocardium and pericardium in dermatomyositis is probably far more common than suspected on clinical grounds. Cardiac evaluation is suggested for all children with dermatomyositis or polymyositis, particularly prior to surgical procedures. Intracardiac electrographic recording techniques offer improved accuracy in determining the site of cardiac conduction defects, and may aid in planning for the use of antiarrhythmia medications or a pacemaker. In children with dermatomyositis or polymyositis known cardiac stimulants should be administered with care.
小儿多发性肌炎可能是一种与皮肌炎不同的疾病。慢性多发性肌炎可发生于儿童期，与成人一样，可能与心律失常有关。皮肌炎中心肌和心包的显微镜下受累可能远比临床推测的更为常见。建议对所有皮肌炎或多发性肌炎患儿进行心脏评估，尤其是在手术前。心内电图记录技术在确定心脏传导缺陷部位方面具有更高的准确性，可能有助于规划抗心律失常药物或起搏器的使用。对于患有皮肌炎或多发性肌炎的儿童，已知的心脏兴奋剂应谨慎使用。
