268 research outputs found

    Outcomes of Descemet's membrane endothelial keratoplasty performed in combination with, before, or after cataract surgery in Fuchs' endothelial dystrophy: A review of the literature and meta-analysis

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    This review aimed to compare the outcomes of Descemet's membrane endothelial keratoplasty (DMEK) in combination with (category 1), before (category 2), or after cataract surgery (category 3) in patients with Fuchs' endothelial dystrophy (FED). Primary outcome was gain in best-corrected log of minimum angle of resolution (logMAR) visual acuity (BCVA). Secondary outcomes were graft detachment, rebubbling rates, rejection, failure, and endothelial cell loss (ECL). In category 1, 2, and 3, 12 studies (N = 1932) were included (five in category 1 [n = 696], one in category 2 [n = 286], and two in category 3 [n = 950], and the remaining four compared between two of the three categories). At 6 months, the gain in BCVA was 0.34 ± 0.04, 0.25 ± 0.03, and 0.38 ± 0.03 logMAR in category 1, 2, and 3, respectively. The difference was significant between categories 1 and 2 (Chi2 = 11.47, P < 0.01) and categories 2 and 3 (Chi2 = 35.53, P < 0.01). At 12 months, the gain in BCVA was 0.52 ± 0.05 and 0.38 ± 0.06 logMAR in categories 1 & 3 (Chi2 = 14.04, P < 0.01). The rebubbling rates were 15%, 4%, and 10% (P < 0.01) and the graft detachment rates were 31%, 8%, and 13% (P < 0.01) in categories 1, 2, and 3, respectively. However, graft rejection, survival rates, and ECL at 12 months were not different between categories 1 and 3. There is low certainty evidence that gain in BCVA in category 1 was comparable to category 3 at 6 months; however, it was significantly better with category 3 at 12 months. Although rebubbling and graft detachment rates were highest in category 1, there was no significant difference in graft rejection, survival rates, and ECL. Further high-quality studies are likely to change the effect estimate and have an impact on the confidence of the estimate

    Thrombocytopenia in hypertensive disorders of pregnancy

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    Background: Thrombocytopenia is defined as a platelet count of less than 150×103 μl. It is commonly diagnosed and has attracted more interest from researchers during recent years, especially in Hypertensive disorders of pregnancy. This study was done to estimate the incidence of thrombocytopenia in pregnant women diagnosed with hypertensive disorders of pregnancy and to correlate its severity with the degree of thrombocytopenia.Methods: In the study 150 women admitted in the OBG Department at Rajarajeswari Medical College and Hospital, Bengaluru during August 2015-August 2016 were included. Hypertensive disorders of pregnancy cases were classified into: Gestational hypertension, mild preeclampsia, severe preeclampsia, haemolysis, elevated liver enzyme levels, and low platelet levels (HELLP) syndrome and eclampsia. The incidence and severity of thrombocytopenia along with maternal and foetal complications encountered in the five groups were analysed. Data were arranged in Microsoft Excel version 2010, and statistically analysed by SPSS version 23.Results: Preeclampsia- mild (29.25%) and severe (22.5%), accounted for most of the cases followed by eclampsia (3%) and gestational HTN (1.5%). Among these hypertensive patients, mild thrombocytopenia was noted in 60 cases (40%), moderate thrombocytopenia 48 (32%), severe thrombocytopenia 12 (8%), and normal platelet counts 30 (20%) were noted. Poor maternal outcome was seen 10.67% cases due to HELLP syndrome and postpartum haemorrhage. Poor foetal outcome was seen in 16% cases due to intrauterine growth restriction and perinatal mortality.Conclusions: Hypertensive disorders of pregnancy is recognized as a major cause of gestational thrombocytopenia. Careful follow up during and after pregnancy is recommended

    Analysis with observational constraints in Λ \Lambda -cosmology in f(R,T)f(R,T) gravity

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    An exact cosmological solution of Einstein field equations (EFEs) is derived for a dynamical vacuum energy in f(R,T)f(R,T) gravity for Friedmann-Lemaitre-Robertson-Walker (FLRW) space-time. A parametrization of the Hubble parameter is used to find a deterministic solution of EFE. The cosmological dynamics of our model is discussed in detail. We have analyzed the time evolution of physical parameters and obtained their bounds analytically. Moreover, the behavior of these parameters are shown graphically in terms of redshift z`z'. Our model is consistent with the formation of structure in the Universe. The role of the f(R,T)f(R,T) coupling constant λ\lambda is discussed in the evolution of the equation of state parameter. The statefinder and Om diagnostic analysis is used to distinguish our model with other dark energy models. The maximum likelihood analysis has been reviewed to obtain the constraints on the Hubble parameter H0H_0 and the model parameter nn by taking into account the observational Hubble data set H(z)H(z), the Union 2.1 compilation data set SNeIaSNeIa, the Baryon Acoustic Oscillation data BAOBAO, and the joint data set H(z)H(z) + SNeIa SNeIa and H(z)H(z) + SNeIaSNeIa + BAOBAO . It is demonstrated that the model is in good agreement with various observations.Comment: 21 PAGES, 20 FIGURE
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