Study of HCP (Hexagonal Close-Packed) Crystal Structure Lattice through Topological Descriptors.

Chemical graph theory is a multidisciplinary field where the structure of the molecule is analyzed as a graphical structure. Chemical descriptors are one of the most important ideas employed in chemical graph theory; this is to associate a numerical value with a graph structure that often has correlation with corresponding chemical properties. In this paper, we investigate another very important closed-packed usual crystal structure defined as HCP (Hexagonal Close-Packed) crystal structure and its lattice formed by arranging its unit cells in a dimension for topological descriptors based on a neighborhood degree, reverse degree, and degree. Furthermore, we classify which descriptor is more dominating.

Hospitalized Women With Cirrhosis Have More Nonhepatic Comorbidities and Associated Complications Than Men.

Gender differences in the natural history of chronic liver disease have been well-described. Women have lower rates of chronic liver disease and slower fibrosis progression, yet higher rates of waitlist mortality.1,2 Although previous studies have identified several clinical factors including height and creatinine that explain some of this transplant disparity, most have used data from administrative records, which are limited in their ability to identify clinically relevant differences and opportunities for intervention to reduce disparities.3-5 Additionally, most studies have focused on the period between waitlist and transplant, failing to capture gender differences in access to transplant.3,6 In the present study, we took advantage of a multicenter inpatient cohort with granular clinical data to characterize how women and men with cirrhosis differ, to stimulate future research aimed at reducing the well-established gender disparity in liver transplantation.

A Rapid Bedside Screen to Predict Unplanned Hospitalization and Death in Outpatients With Cirrhosis: A Prospective Evaluation of the Clinical Frailty Scale.

OBJECTIVES: Screening tools to determine which outpatients with cirrhosis are at highest risk for unplanned hospitalization are lacking. Frailty is a novel prognostic factor but conventional screening for frailty is time consuming. We evaluated the ability of a 1 min bedside screen (Clinical Frailty Scale (CFS)) to predict unplanned hospitalization or death in outpatients with cirrhosis and compared the CFS with two conventional frailty measures (Fried Frailty Criteria (FFC) and Short Physical Performance Battery (SPPB)). METHODS: We prospectively enrolled consecutive outpatients from three tertiary care liver clinics. Frailty was defined by CFS >4. The primary outcome was the composite of unplanned hospitalization or death within 6 months of study entry. RESULTS: A total of 300 outpatients were enrolled (mean age 57 years, 35% female, 81% white, 66% hepatitis C or alcohol-related liver disease, mean Model for End-Stage Liver Disease (MELD) score 12, 28% with ascites). Overall, 54 (18%) outpatients were frail and 91 (30%) patients had an unplanned hospitalization or death within 6 months. CFS >4 was independently associated with increased rates of unplanned hospitalization or death (57% frail vs. 24% not frail, adjusted odds ratio 3.6; 95% confidence interval (CI): 1.7-7.5; P=0.0008) and there was a dose response (adjusted odds ratio 1.9 per 1-unit increase in CFS, 95% CI: 1.4-2.6; P<0.0001). Models including MELD, ascites, and CFS >4 had a greater discrimination (c-statistic=0.84) than models using FFC or SPPB. CONCLUSIONS: Frailty is strongly and independently associated with an increased risk of unplanned hospitalization or death in outpatients with cirrhosis. The CFS is a rapid screen that could be easily adopted in liver clinics to identify those at highest risk of adverse events.