ABSTRACT
Objective:To evaluate the aerosol and concentration (PM2.5, PM10 and aerosol particle number) formation in non-contact "air-puff" tonometry and provide suggestions for medical workers to take appropriate daily protection during the prevalence of 2019-nCoV.Methods:A cross-sectional study was carried out in this study.Thirty healthy subjects were enrolled on February 22, 2020 in Eye Hospital of Wenzhou Medical University.The intraocular pressure (IOP) was measured by non-contact "air-puff" tonometer in the ophthalmic consulting room and the hall with or without masks.Particulate matter (PM)2.5, PM10 and aerosol particles were recorded by air quality detector.The cumulative effects of IOP measurement, PM2.5, PM10 and aerosol particle number were analyzed, and the aerosol density of subjects with and without masks was compared.Results:The PM2.5, PM10 and aerosol particles produced by the non-contact "air-puff" tonometry and increased with the increase of spray times.The IOP curves of 60 eyes of 30 subjects were measured respectively in two environments of medical consulting room and medical institution hall.It was found that PM2.5, PM10 and particle number fluctuated and increased with the increase of IOP measurement person times, showing cumulative effect, and the accumulation speed of aerosol density in hall was faster than that in consulting room.The density of PM2.5 and PM10 produced without gauze mask were (53.417±2.306) and (85.350± 3.488) μg/m 3, which were higher than those of (50.567±0.862) and (80.617±1.463) μg/m 3 with gauze mask.The differences were statistically significant (P=0.028, 0.019), and significant difference was found in aerosol density between with and without gauze mask, although more aerosol was produced without gauze mask in comparison to gauze mask (P=0.123). Conclusions:Aerosol can be produced by non-contact "air-puff" tonometer spraying, and it fluctuates with the increase of spraying times, showing a cumulative effect.The aerosol and particulate matter accumulation is higher in the hall with insufficient air circulation, and more aerosol and PM can be produced without gauze mask.
ABSTRACT
Objective@#To evaluate the aerosol concentration(PM2.5,PM10.0 and aerosol particle number) formation in non-contact "air-puff" tonometry and provide suggestions for medical workers to take appropriate daily protection during the prevalence of 2019-nCoV.@*Methods@#A cross-sectional study was carried out in this study. Thirty healthy subjects were enrolled on February 22, 2020 at Eye Hospital of Wenzhou Medical University. The intraocular pressure (IOP) was measured by non-contact "air-puff" tonometer in the ophthalmic consulting room and the hall with or without masks. PM2.5, PM10.0 and aerosol particles were recorded by air quality detector. The cumulative effects of IOP measurement, PM2.5, PM10.0 and aerosol particle number were analyzed, and the aerosol density of subjects with and without masks was compared.@*Results@#The PM2.5, PM10.0 and aerosol particles produced by the non-contact "air-puff" tonometry and increased with the increase of spray times. The IOP curves of 60 eyes of 30 subjects were measured respectively in two environments of medical consulting room and medical institution hall. It was found that PM2.5, pm10.0 and particle number fluctuated and increased with the increase of IOP measurement person times, showing cumulative effect, and the accumulation speed of aerosol density in hall was faster than that in consulting room. The density of PM2.5 and PM10.0 produced without gauze mask were (53.417±2.306) and (85.350± 3.488) μg/m3, which were higher than those of (50.567±0.862) and (80.617±1.463) μg/m3 with gauze mask. The differences were statistically significant (P=0.028, 0.019).@*Conclusions@#Aerosol can be produced by non-contact "air-puff" tonometer spraying, and it fluctuates with the increase of spraying times, showing a cumulative effect. The aerosol accumulation is higher in the hall with insufficient air circulation. And more aerosol can be produced without gauze mask.
ABSTRACT
Objective To investigate the effect of self-management program on low vision patients and the role of intrinsic motivation.Methods A total of 160 low vision patients were assigned into 2 groups by random digits table method with 80 cases each.The control group was given routine doctor's advice and health education,and the observation group was given a self-management program guided by well trained medical personnel on the basis of the control group.The General Self-efficacy Scale (GSS) and Chinese-version Low Vision Quality Of Life questionnaire (CLVQOL) was conducted before and after intervention.The patients' intrinsic motivation also was evaluated by Intrinsic Motivation Inventory (IMI) after intervention.Results The total score and scores of interest/fun,inner selectivity,subjective ability and stress/strain dimensions of IMI were (62.25±3.74),(18.43 ±3.67),(16.13 ± 1.53),(16.05 ±7.34),(11.64 ±2.74)points、in observation group and(50.24±4.32),(13.53±2.78),(13.67±1.75),(13.52±2.42),(9.52±1.77) points in control group,and there were significant differences (t=5.813-18.800,P＜ 0.05).The scores of GSS and CLVQOL in observation group after intervention were (27.49±3.41),(64.30±7.04) points,which were higher than those in control group:(16.54±2.25),(34.86±3.99) points,and there were significant differences (t=23.973,32.540,P ＜ 0.05).After intervention,the total score and interest/fun,inner selectivity,subjective ability and stress/strain dimensions of IMI in observation group were positively associated with the score of GSS (r=0.663-0.739,P ＜ 0.05).The total score of IMI was positively associated with the total score of CLVQOL (r=0.765,P ＜ 0.05).In addition,a positive association was observed between the total score and each dimension of CLVQOL and inner selectivity,subjective ability and stress/strain dimensions of the IMI (r=0.661-0.765,P ＜ 0.05).Conclusions A self-management program can improve low vision patients'self-efficacy and quality of life,intrinsic motivation is the important factor influencing the effect of selfmanagement program.