This article summarizes Professor Wang Canhui's experience in treating pulmonary nodules.It believes that qi deficiency is the root cause of pulmonary nodules,and phlegm and blood stasis are the symptoms;emphasizes the important role of emotional fac-tors;summarizes the etiology as deficiency,depression,phlegm,stasis,and toxin,and the basic pathogenesis is lung qi deficiency,with phlegm and stasis accumulation.The treatment should focus on replenishing qi and clearing the lungs,activating blood circulation and dissipating knots.Meanwhile,attention should be paid to the smooth flow of qi movement,and good use of empirical medicinal pairs to achieve the purpose of strengthening healthy qi,dispelling pathogen and dispersing nodules.

AIM:The 50-Hz magnetic field (MF) is a potential health-risk factor.Its effects on the cardiovascular system have not been fully investigated .This study was conducted to explore the effects of long-term exposure to 50-Hz MF on the cardiovascular system . METHODS:In the study , an exposure system was constructed and the distribution of 50-Hz MF was detected .Sixty-four Sprague-Dawley (SD) rats were exposed to 50-Hz MF at 100 μT for 24 weeks, 20 hours per day, while another 64 rats were sham exposed. During the exposure, blood pressure was measured every 4 weeks, and 24 weeks later, echocardiography, cardiac catheterisation and electrocardiography were performed .Moreover , heart and body weight were recorded , while haematoxylin-eosin staining and real-time PCR were conducted .RESULTS:The results showed that compared with the sham group , exposure to 50-Hz MF did not exert any effect on blood pressure, pulse rate, heart rate and cardiac rhythm.Further, echocardiography and cardiac catheterisation showed that there were no significant differences in the cardiac morphology and haemodynamics .In addition , histopathological examination showed that 50-Hz MF exposure had no effect on the structure of hearts .Finally, the expression of the cardiac hypertrophic relative genes did not show any significant differences between 50-Hz MF exposure group and the sham group .CONCLUSION: Taken together , in SD rats, exposure to 50-Hz/100-μT MF for 24 weeks did not show any obvious effects on the cardiovascular system .