Objective To study the response of the retinal neuronal adaptive system to changes of background illumination (BG) by measuring the oscillatory potentials (OPs) and the a- and b-waves of the electroretinogram (ERG) in different BG illuminations. Methods The a- and b-wave and the digitally filtered OPs were simultaneously recorded from Wistar Fu rats aged from 25 to 29 days during dark adaptation (DA) and during 6~8 minutes of BG illuminations at four levels increased successively by steps of two log units, i.e., ldquo;low scotopicrdquo; level of 1.43times;10-6cd/m2, ldquo;high scotopicrdquo; of 1.43times;10-4cd/m2 , ldquo;low mesopicrdquo; of 1.43times;10-2cd/m2 and ldquo;high mesopicrdquo; of 1.43times;10-2cd/m2. Full field stimulus flashes of 75 msec duration and 1.43times;10-2cd/m2intensity was delivered at an interval of 1 minute. Results Five OP wavelets were recorded in DA and during scotopic BG illuminations. The number of wavelets was reduced to three as the eyes were exposed to mesopic BG levels. However, the sum of OPs amplitudes (SOPs) increased as the BG was intensified, except at ldquo;high mesopicrdquo; level, by which a significant decrease of SOPs occurred. The amplitudes of the a-and b-waves remained unchanged at the two scotopic BG and decreased as the BG intensity increased to mesopic levels. Conclusion The response of retinal neural adaptive system of the Albino rat to changes of BG light is more sensitive and robust than the slow components of the ERG. The enhancement of the oscillatory responses at ldquo;low mesopicrdquo; illumination level suggests that using proper BG light may be conducive to reducing the variation of OPs. (Chin J Ocul Fundus Dis, 2001,17:286-288)
Objective To estimate the relationship of methods and drugs for management of constrictive pericarditis during pericardiectomy. Methods We reviewed the records of 45 patients (mean age, 40.24±15.34 years) with a diagnosis of constrictive pericarditis who underwent pericardiectomy in our hospital from 2012 through 2014 year. During operation, inotropic agents, vasodilators and diuretics were used. According to the diuretics, patients were divided into two groups including a furosemide group(group F) with 38 patients and a lyophilized recombinant human brain natriuretic peptide (lrhBNP) group with 7 patients(group B). Results Preoperatively, 30 patients were pulmonary congestion, which was diagnosed by chest radiographs. Pericardiectomy was finished by off pump in 43 patients. Another 2 patients required cardiopulmonary bypass (CPB) for pericardiectomy. In the group F 52.6% of the patients needed vasodilators to reduce cardiac preloading following pericardiectomy. None of other vasodilators were used in the group B. After pericardiectomy, the fluctuation of systolic and diastolic pressure decreased significantly in the group B (P=0.01, respectively). In the group F, the fluctuation of diastolic pressure decreased significantly (P＜0.05). Low cardiac output was the most common postoperative problem. One patient accepted postoperative extracorporeal membrane oxygenation (ECMO) support. Postoperative poor renal function was found in 42.2% of the patients. Three of them needed hemofiltration. Postoperative poor renal function accompanied by poor hepatic function was found in 15.6% of the patients. One of them used dialysis and artificial liver. Three patients were respiratory failure with longer mechanical ventilation and tracheotomy. The overall perioperative mortality rate was 6.7% (3 patients). All patients, who died or used with hemofiltration, artificial liver and ECMO were found in the group F. Conclusion More stable haemodynamics after pericardiectomy may occur with using lrhBNP. lrhBNP may reduce postoperative major morbidity and mortality. Because of the small group using lrhBNP in our study, more patients using lrhBNP for pericardiectomy need to be studied.
Objective To systematically review the value of ultrasound in the diagnosis of fracture of the distal radius and ulna for providing evidence for clinical diagnosis. MethodsWe searched PubMed, EMbase, The Cochrane Library (Issue 7, 2016), CNKI, CBM and WanFang Data databases for studies about ultrasound in the diagnosis of fracture of the distal radius and ulna from inception to August 1st, 2016. Two reviewers independently screened literatures according to inclusion and exclusion criteria, extracted data, and assessed the risk of bias of included studies by using the QUADAS-2 (Quality Assessment of Diagnostic Accuracy Studies 2) tool, and then meta-analysis was performed by using Meta-Disc 1.4 software. ResultsA total of 16 articles involving 1 182 patients and 631 fractures were included. The results of heterogeneity test revealed that there was statistical heterogeneity among the results of studies, thus, random effects model was used for meta-analysis. The results of meta-analysis showed that the pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, diagnosis odds ratio for ultrasound diagnosis fracture of the distal radius and ulna were 0.95 (95%CI 0.94 to 0.97), 0.92 (95%CI 0.89 to 0.94), 9.98 (95%CI 5.20 to 19.15), 0.07 (95%CI 0.04 to 0.13), 187.94 (95%CI 65.67 to 537.84), respectively. The area under the SROC curve was 0.976 4. ConclusionUltrasound is a useful non-invasive method as a routine examination for fracture of the distal radius and ulna. Due to the limited quality and quantity of included studies, the above conclusion is needed to be validated by more high-quality studies.
目的:信息系統的改進應用是為確保急診科預檢分診處將來能使醫院對自然災害事件的傷員救治時以最便捷、最快速的方式錄入自然災害事件傷員的信息資料和快速評估傷情，優先準確的將傷員按病情和就診區域分類，以便暢通及時救治傷員；在治療中和日后便于識別、查找、統計災害事件傷員。方法:LIS（檢驗系統）+ RIS（影像系統）+ HIS（無紙化辦公系統）三合一系統和增加自然災害傷員的“錄入信息資料”眉欄。結果:進一步改進信息網絡應用系統后，能滿足一般患者信息資料錄入和自然災害事件應急狀況下的患者資料錄入，實現電子病歷和電子處方等信息網絡系統，達到院內、科內資源共享。
ObjectiveTo evaluate the efficacy and safety of phacoemulsification cataract extraction combined with 180° trabeculotomy assisted by gonioscopy (GT) and combined glaucoma filtration surgery (GFS) in the treatment of primary open angle glaucoma (POAG) with cataract. MethodsThe patients with POAG and cataract in the ophthalmology center of the People’s Hospital of Leshan from June 2021 to March 2022 were included. The patients were divided into GT group and GFS group according to surgical methods. Intraocular pressure (IOP), best corrected visual acuity (BCVA) logMAR, number of anti-glaucoma drugs used, success rate, and complications were compared between the two groups after 1-year followed-up. ResultsA total of 27 patients (43 eyes) in the GT group and 26 patients (34 eyes) in the GFS group were included. There was no significant difference in baseline between the two groups (P>0.05). BCVA logMAR in the GT group was lower than that in the GFS group at 1 year after surgery, the difference was statistically significant (P<0.01). The postoperative IOP in GT group was lower than that in GFS group, the difference was statistically significant (P<0.05). The difference in total effective rate, the number of anti-glaucoma drugs and the incidence of complications between the two groups were not statistically significant (P>0.05). ConclusionPhacoemulsification cataract extraction combined with GT is safe and effective in the treatment of POAG with cataract and has a good effect on reducing IOP.