Delays in surgery for hip fracture are associated with significant increase in short-term and 1-year mortality. Variation among the hospitals was substantial and calls for prompt quality improvement actions.

In a meta-analysis of randomized controlled trials of NASH, patients given placebo have significant histologic, radiologic, and biochemical responses. The placebo response should be considered in designing trials of agents for treatment of NASH.

Chronic hepatitis delta represents the most severe form of chronic viral hepatitis. The current treatment of hepatitis delta virus (HDV) infection consists of the use of interferons and is largely unsatisfactory. Several new compounds are currently in development for the treatment of HDV infection. However, surrogate markers that can be used to develop clinical endpoints in HDV infection are not well defined. In the current manuscript, we aimed to evaluate the existing data on treatment of HDV infection and to suggest treatment goals (possible ''trial endpoints") that could be used across different clinical trials.

(EP) in rodents are challenging, and available data are sparse. Herein, we utilized a novel type of bipolar electrode to evaluate the atrial EP of rodents through small lateral thoracotomy. In anesthetized rats and mice, we attached two bipolar electrodes to the right atrium and a third to the right ventricle. This standard setup enabled high-resolution EP studies. Moreover, a permanent implantation procedure enabled EP studies in conscious freely moving rats. Atrial EP was evaluated in anesthetized rats, anesthetized mice (ICR and C57BL6 strains), and conscious rats. Signal resolution enabled atrial effective refractory period (AERP) measurements and first time evaluation of the failed 1:1 atrial capture, which was unexpectedly longer than the AERP recorded at near normal cycle length by 27.2 Ϯ 2.3% in rats (P Ͻ 0.0001; n ϭ 35), 31.7 Ϯ 8.3% in ICR mice (P ϭ 0.0001; n ϭ 13), and 57.7 Ϯ 13.7% in C57BL6 mice (P ϭ 0.015; n ϭ 4). While AERP rate adaptation was noted when 10 S1s at near normal basic cycle lengths were followed by S2 at varying basic cycle length and S3 for AERP evaluation, such rate adaptation was absent using conventional S1S2 protocols. Atrial tachypacing in rats shortened the AERP values on a timescale of hours, but a reverse remodeling phase was noted thereafter. Comparison of left vs. right atrial pacing in rats was also feasible with the current technique, resulting in similar AERP values recorded in the low right atrium. In conclusion, our findings indicate that in vivo rate adaptation of the rodent atria is different than expected based on previous ex vivo recordings. In addition, atrial electrical remodeling of rats shows unique remodelingreverse remodeling characteristics that are described here for the first time. Further understanding of these properties should help to determine the clinical relevance as well as limitations of atrial arrhythmia models in rodents.atrial effective refractory period; rate adaptation; electrical remodeling MICE AND RATS ARE USED EXTENSIVELY in cardiac research, and reliable models of cardiac pathologies have been developed and applied in these species (4,19,31). Moreover, genetically altered mice have become invaluable tools for studying the molecular basis of cardiac pathologies including ventricular arrhythmias (7, 28). Use of rodents for studying atrial arrhythmias has been largely limited, but in recent years atrial tachyarrhythmias have been repeatedly produced in rats and mice, and rodents are increasingly used for studying various molecular, cellular, and pharmacological aspects of atrial function (1,5,8,24,36,37). In addition, mice with genetic alterations are providing important insights in this field as well (17,23,27,32).Due to the small size of the rodent heart and, more so, the rodent atria, electrode implantation for studies of functional electrophysiology is challenging. Several techniques were developed to increase the applicability of such studies (2, 23). The transesophageal approach, which is least invasive, necessitates the use of high e...

Background Liver biopsy is the gold standard in evaluating liver diseases but is susceptible to complications. Safety data on aspiration needle biopsies remains limited. Aim To evaluate the safety of percutaneous liver biopsy performed with Klatskin needle. Methods Clinical and biochemical data were retrospectively retrieved from sequential subjects who underwent liver biopsy with Klatskin needle from 1978 to 2015. Subjects with complications underwent thorough chart reviews for hospital course. Results Of 3,357 biopsies performed, complications occurred in 135(4%) biopsies with 33(1%) resulting in major complications. Severe pain occurred in 78(2.3%) subjects and bleeding occurred in 21(0.6%) subjects. Biliary injury occurred in 8(0.2%) biopsies. Three subjects died as a result of massive intraperitoneal bleeding. Compared to viral hepatitis, biopsies performed with certain diagnosis had significantly higher odds of major complications: NRH (OR:17), DILI (OR:20), GVHD (OR:32) and HCC (OR:34). Subjects with major complications had higher pre-biopsy median AP (153 vs 78 U/L, p<0.001), ALT (105 vs 64 U/L, p<0.05), AST (62 vs 47 U/L, p<0.02), along with marginally lower total bilirubin (1.0 vs 0.7 mg/dL) and albumin (3.7 vs 4.0 g/dL, p<0.001). By multivariate backward logistic regression, platelets ≤100 K/uL and aPTT>35 were independent risk factors of post-biopsy bleeding. Conclusion Klatskin needle liver biopsies are safe with rare procedural morbidity. Our data suggests certain acutely ill subjects and those with systemic illnesses may be at higher risk of major complications. Clinicians should weigh the risks and benefits of liver biopsy in these patients with other alternative approaches.