本文用配对研究检查了职业性激光接触对心功能可能的影响。77名职业激光接触人员分别与77名非接触激光人员配对组成58对男性和19对女性。用心机图测定心功能。结果发现激光接触组的PEPI、IRT显著延长,PEP/LVET比值明显增加,而二尖瓣EFV显著降低,上述心机图表现提示长期接触激光后心功能降低。 The paired studies examined the possible impact of occupational laser exposure on cardiac function. Totally, 77 professional laser workers were matched with 77 non-contact laser workers to make 58 pairs of males and 19 pairs of females. Heart machine graph determination of cardiac function. The results showed that PEPI and IRT of laser exposure group were significantly prolonged, PEP / LVET ratio was significantly increased, and mitral EFV was significantly reduced. The above cardiogram showed that heart function decreased after prolonged exposure to laser.