AIM: To evaluate corneal injury during general anesthesia and analyze the protective effect of medical hydro-gel eye patch in clinics.METHODS:Seventy-sixpatientswith152 eyesundergoing general anesthesia were included....AIM: To evaluate corneal injury during general anesthesia and analyze the protective effect of medical hydro-gel eye patch in clinics.METHODS:Seventy-sixpatientswith152 eyesundergoing general anesthesia were included. None had positive corneal fluorescein staining before surgery. Both eyes of each patient were analyzed, with one randomly allocated to receive medical hydro-gel eye patch, and the other to receive common adhesive tape as a control. Corneal injuries were evaluated by scoring fluorescein staining under a hand-held slit lamp immediately after surgery in postanesthesia care unit and 24 h thereafter. Patients’ discomforts were also evaluated.RESULTS: Twelve eyes(15.8%) in the hydro-gel patch group and 30 eyes(39.5%) in the adhesive tape group showed corneal injury immediately after surgery. The eyes protected with hydro-gel patch showed statistically less corneal fluorescein staining than the control group.Four eyes in hydro-gel patch group and 6 eyes in adhesive tape group suffered discomfort immediately after surgery without intergroup difference and all discomforts disappeared after 24h(P =0.257). No side effect was observed in hydro-gel patch group, while 5eyes had brow avulsion and 2 got skin itching in adhesive tape group.CONCLUSION: Corneal injury complication was morefrequent than we thought following general anesthesia.The medical hydro-gel eye patch can protect the occurrence of corneal injury following general anesthesia.展开更多
We have experimentally studied the growth process of a water-absorbing polymer commonly known as hydro-gel. We took a number of spherical beads, immersed them in pure water, measured their diameters at regular interva...We have experimentally studied the growth process of a water-absorbing polymer commonly known as hydro-gel. We took a number of spherical beads, immersed them in pure water, measured their diameters at regular intervals of time and plotted graphs showing the change in volume with the time of immersion, to analyze their swelling properties. We have formulated a dynamical model on the basis of curve-fitting to our experimental data. Our mathematical modelling is devoted solely towards the explanation of the swelling of spherical hydro-gels and we have interpreted our observations on these basis. And finally evaluating the constants of the process, we have shown that the results obtained from our modelling and numerical simulation exactly match the experimental data. The justification of this new approach lies in its successful application for the complete explanation of our observations through numerical and analytical ways.展开更多
基金Supported by National Natural Science Foundation of China (No.81070705 81270974)+1 种基金Zhejiang Provincial Natural Science Foundation of China (LQ13H120003)Zhejiang Key Laboratory Fund of China (No.2011233)
文摘AIM: To evaluate corneal injury during general anesthesia and analyze the protective effect of medical hydro-gel eye patch in clinics.METHODS:Seventy-sixpatientswith152 eyesundergoing general anesthesia were included. None had positive corneal fluorescein staining before surgery. Both eyes of each patient were analyzed, with one randomly allocated to receive medical hydro-gel eye patch, and the other to receive common adhesive tape as a control. Corneal injuries were evaluated by scoring fluorescein staining under a hand-held slit lamp immediately after surgery in postanesthesia care unit and 24 h thereafter. Patients’ discomforts were also evaluated.RESULTS: Twelve eyes(15.8%) in the hydro-gel patch group and 30 eyes(39.5%) in the adhesive tape group showed corneal injury immediately after surgery. The eyes protected with hydro-gel patch showed statistically less corneal fluorescein staining than the control group.Four eyes in hydro-gel patch group and 6 eyes in adhesive tape group suffered discomfort immediately after surgery without intergroup difference and all discomforts disappeared after 24h(P =0.257). No side effect was observed in hydro-gel patch group, while 5eyes had brow avulsion and 2 got skin itching in adhesive tape group.CONCLUSION: Corneal injury complication was morefrequent than we thought following general anesthesia.The medical hydro-gel eye patch can protect the occurrence of corneal injury following general anesthesia.
文摘We have experimentally studied the growth process of a water-absorbing polymer commonly known as hydro-gel. We took a number of spherical beads, immersed them in pure water, measured their diameters at regular intervals of time and plotted graphs showing the change in volume with the time of immersion, to analyze their swelling properties. We have formulated a dynamical model on the basis of curve-fitting to our experimental data. Our mathematical modelling is devoted solely towards the explanation of the swelling of spherical hydro-gels and we have interpreted our observations on these basis. And finally evaluating the constants of the process, we have shown that the results obtained from our modelling and numerical simulation exactly match the experimental data. The justification of this new approach lies in its successful application for the complete explanation of our observations through numerical and analytical ways.
