Methods Plasma ET, CGRP were determined by radioimmunoassay method and OFR were by electron spin resonance (ESR) specotroscopy method.

• 方法 以放射免疫分析方法测定 40例ACI患者手术前后血浆ET、CGRP含量 ,用电子自旋共振 (ESR)方法测定血浆OFR浓度 ,并以 40例健康献血者为术前对照。