本文旨在介绍心肌梗塞时使用低能氮氖激光作血管内血液照射及其对机体神经体液调节系统的影响。调查对象为大病灶患者119例,均为男性,年龄28～66岁。起病后头24h入院。均无血液循环功能不全症状。患者分为二组:①组45例采用标准疗法,使用极化液、长效硝酸酯、镇痛药及抗心律失常药加每日一次,根据临床效果一般照射3～5次。②组74例(对照组)仅用标准疗法。全部患者均进行严密的临床及动态心电图观察,如观察到疼痛复发、心律失常和传导障碍,则应及时补用扩血管性药物。发生心功能不全时按常规治疗。入院时按年龄、大小及部位、伴有高血压、进入病房和开始治疗的时间、疼痛、室性早搏的频率进行调查比较。患者均能满意接受,未发现激光照射的副作用。采用后,患者的疼痛综合征消失。如入院头天因胸痛需注射止痛药者:①组16例(35.6%)和②组47例(63.5%)(P<0.05)。48h后胸痛再出现者①组仅10例(22.2%),②组38例(48.6%)(P<0.05)。血管性疼痛复发需加强扩 This article aims to introduce the use of low-energy neon neonatal laser for intravascular blood irradiation in myocardial infarction and its impact on the body’s neurohumoral regulation system. A total of 119 patients with major lesions were surveyed. All of them were male, ranging in age from 28 to 66 years. The first 24h after admission to hospital. No blood circulation dysfunction symptoms. Patients were divided into two groups: ① group of 45 patients with standard therapy, the use of polar fluid, long-acting nitrates, analgesics and anti-arrhythmic drugs plus once daily, according to the clinical effects of general irradiation 3 to 5 times. ② group of 74 cases (control group) only standard therapy. All patients were closely clinical and dynamic ECG, such as the observed recurrence of pain, arrhythmia and conduction disorders, should promptly make up for vasodilators. Occurrence of heart failure by conventional treatment. Admission by age, size and location, with hypertension, the time to enter the ward and start treatment, pain, premature ventricular contractions frequency comparison. Patients are satisfied with the acceptance, did not find the side effects of laser irradiation. After use, the patient’s pain syndrome disappears. Such as the first day of admission due to chest pain need to inject painkillers: ① group of 16 patients (35.6%) and ② group of 47 patients (63.5%) (P <0.05). 48 hours after reappearance of chest pain ① group only 10 cases (22.2%), ② group of 38 cases (48.6%) (P <0.05). Vascular pain recurrence should be strengthened