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Clinical Trials About "Isolation synthesis biological activities bibenzyl from" RSS

07:40 EST 28th January 2020 | BioPortfolio

We list hundreds of Clinical Trials about "Isolation synthesis biological activities bibenzyl from" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.

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Showing "Isolation synthesis biological activities bibenzyl from" Clinical Trials 1–25 of 6,000+

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Effect of Nutrition on Muscle Protein Synthesis

The present proposal is designed to examine the effect of carbohydrate and protein co-ingestion on muscle protein synthesis during endurance type exercise activities. We hypothesize that muscle protein synthesis is higher when protein is co-ingested during exercise.


Systematic Evaluation of Ablation Techniques for Non-Paroxysmal Atrial Fibrillation.

The purpose of this study is to evaluate the safety and effectiveness of empirical posterior wall isolation (PWI), left atrial appendage electrical isolation (LAAEI) and coronary sinus isolation (CSI) when compared to pulmonary vein isolation (PVI) alone: - PVI alone, - PVI + PWI, - PVI + LAAEI + PWI, - PVI + PWI + LAAEI + CSI

Evaluating Risk Factors and Biomarkers for Adaptation and Resilience to Spaceflight

This study assesses differences in biological and behavioral domains that relate to individual adaptation and resiliency to an isolated, confined and controlled environment, and evaluates the effect of confinement, work, monotony, and social and physical isolation on stress resiliency and well-being.


Comparison of Time-restricted Feeding and Continuous Feeding in Critically Ill Patients

In the nutrition guideline (A.S.P.E.N guideline), there was no recommendation about the feeding type in enteral feeding of critically ill patients. Continuous feeding is the most popular feeding type in ICU because of its less nursing burden and reducing the aspiration incidence theoretically. However, some previous studies demonstrated that there were no complications differences between continuous and time-restricted feedings(such as intermittent feedings). In ICU,...

WATCHMAN for Concomitant Left Atrial Appendage Electrical Isolation and Occlusion to Treat Persistent Atrial Fibrillation Rhythm

WATCH-Rhythm is a prospective, randomized, multi-center, investigation to collect safety and effectiveness data on combining conventional AF ablation with LAA electric isolation and closure within a single procedure.

A Study Evaluating the Effects of Lipid Lowering Treatment on Steroid Synthesis

Cholesterol is the precursor of glucocorticoids, mineralocorticoids and sex steroids. Both adrenal and non-adrenal (ovarian + testicular) all steroid hormones are primarily synthesized using the LDL–cholesterol in the circulation. Additionally there is ‘de novo’ cholesterol synthesis in both the adrenals and gonads controlled by the HMG-CoA reductase enzyme. A third pathway is the use of circulatory HDL–cholesterol by the adrenal and gonadal tissues for the synthesis of...

Outcome of Atrial Fibrillation Ablation After Permanent Pulmonary Vein Antrum Isolation With or Without Proven Left Atrial Posterior Wall Isolation

Objective: This prospective study aims to examine the outcome of atrial fibrillation (AF) ablation after permanent pulmonary vein antrum isolation or pulmonary vein antrum isolation plus left atrial posterior wall isolation is proven by a repeat procedure. The study will be conducted in patients with different types of AF: paroxysmal AF (PAF) and non-PAF (Persistent AF and Long Standing Persistent AF). Hypothesis: In addition to permanent pulmonary vein antrum isolation, prove...

Contact Force Guided Ablation Versus Conventional Pulmonary Vein Isolation for Paroxysmal Atrial Fibrillation

The investigators prospectively investigate the differences between contact-force guided pulmonary vein isolation (PVI) and conventional pulmonary vein isolation in patients with paroxysmal atrial fibrillation (PAF) with respect to adenosine guided unmasking of dormant conduction, procedural and clinical outcome.

Comparison Between Contact Force Guided and Blinded Strategy on PV Isolation in AF Patients

Pulmonary vein (PV) isolation is very important in atrial fibrillation (AF) catheter ablation. PV reconnection is one of the main reasons in AF recurrence. Contact force-sensing catheter is a new catheter which has valuable tools to monitor and increase the efficacy of PV isolation. Previous paper reported the efficacy of contact force-sensing catheter on immediate PV isolation and outcome. However, there might be confounding factor as inter-individual variation. Therefore, we ...

A Clinical Trial Comparing Isolite® vs. Cotton Roll Isolation in the Placement of Dental Sealants

The purpose of this split-mouth, randomized, controlled trial is to evaluate the retention rates of sealants placed under Isolite vs. cotton roll isolation. This study will also compare the patient and operator acceptability and satisfaction of the two isolation techniques as well as the time consumed for sealant application during the two isolation techniques.

Pulmonary Vein (PV) -Isolation: Arrhythmogenic Vein(s) Versus All Veins

We conduct a randomized study comparing the safety and effectiveness of two interventional ablation techniques for treatment of paroxysmal atrial fibrillation: the segmental pulmonary vein ablation approach, (1) with empiric isolation of all pulmonary veins or (2) Segmental Isolation of the arrhythmogenic pulmonary vein(s)

Comparison of Circumferential Pulmonary Vein Isolation Alone Versus Linear Ablation in Addition to Circumferential Pulmonary Vein Isolation for Catheter Ablation in Persistent Atrial Fibrillation: Prospective Randomized Controlled Trial

The purpose of this study is to compare the clinical outcomes depending on catheter ablation strategy for persistent atrial fibrillation. After randomization, investigators will conduct circumferential pulmonary vein isolation alone in a group, and additional posterior box isolation and anterior linear ablation in the other group. Investigators will compare clinical recurrence rate, complication rate, and procedure time, etc.

Pulmonary Vein Isolation With Versus Without Continued Antiarrhythmic Drug Treatment in Subjects With Recurrent Atrial Fibrillation

The purpose of this study is to compare the efficacy and safety of PV isolation with continued antiarrhythmic drug treatment (PVI+ADT) to PV isolation without continued ADT (PVI-ADT) in patients undergoing treatment for symptomatic recurrent AF.

Cryoballoon Pulmonary Vein Isolation vs. Cryoballoon Pulmonary Vein Isolation With Additional Right Atrial Linear Ablation for Persistent Atrial Fibrillation (CRARAL Trial)

Cryoballoon ablation is proven to be effective in pulmonary vein isolation in patients with paroxysmal atrial fibrillation. However, it is not certain that cryoablation is effective and safe in patients with persistent atrial fibrillation, because of higher chance of recurrence compared to paroxysmal atrial fibrillation. The aim of this study is to evaluate the efficacy and safety of cryoballoon pulmonary vein isolation vs. cryoballoon pulmonary vein isolation with additional r...

Effectiveness of Rubber Dam Isolation Versus Cotton Roll Isolation on Bonded Fissure Sealant Retention

The purpose of this study is to evaluate and compare the clinical retention of bonded fissure sealants placed under rubber dam isolation and cotton roll isolation.

Safety and Feasibility of Electrical Isolation of the Superior Vena Cava for Paroxysmal Atrial Fibrillation

The present study is designed as a observational prospective, multicentre, international. The main aim of this study is to evaluate the safety and feasibility of SVC isolation with the CB in a prospective manner.

Randomized Trial of Two Different Strategies to Treat Paroxysmal Atrial Fibrillation

The purpose of this study is to investigate the significance of complete versus incomplete electrical isolation of pulmonary veins by radiofrequency-induced linear lesions in patients with paroxysmal atrial fibrillation. The study hypothesis ist that the complete linear PV isolation ablation is superior to the non-complete linear PV isolation on the outcome of patients with idiopathic drug-refractory atrial fibrillation. As a second hypothesis in this adaptive study design, th...

Effects of Oral Supplementation of Arginine, Zinc and Vitamin C on Collagen Synthesis in Inguinal Hernia Patients

Collagen synthesis is depressed systemically in the immediate postoperative period. Arginine, zinc and vitamin C impact collagen synthesis. The aim of this study is to investigate the effect of a pre and postoperative oral supplement consisting of arginine, zinc and vitamin C on collagen synthesis in patients undergoing inguinal hernia repair.

Collaboration Rather Than Isolation: Preparing Doctors of Tomorrow for Improved Medical Diagnosis

In this study, the investigators wish to explore the optimal student ratio in the simulated setting for subsequent skills transfer. The study aims to explore if there are differences in the effect of collaborative learning as a function of the number of collaborators with respect to future individual learning and transfer. Additionally, the investigators will aim to get a better understanding of the interactive processes that take place during collaborative learning. Many diffe...

Comparison of Circumferential Pulmonary Vein Isolation and Complex Pulmonary Vein Isolation Additional Linear Ablation for Recurred Atrial Fibrillation After Previous Catheter Ablation: Prospective Randomized Trial (CALRA-AF)

The purpose of this study is to compare the clinical outcomes depending on catheter ablation strategy for repeat ablation procedure among the patients with recurred atrial fibrillation after de novo catheter ablation. After randomization, we will conduct circumferential pulmonary vein isolation alone in a group, and additional posterior box isolation and anterior linear ablation in the other group. Non-pulmonary vein foci ablation will be done in all patients. We will compare c...

Low Voltage-Directed Catheter Ablation for Atrial Fibrillation

A three-pronged approach to evaluate long term success of non-paroxysmal ablation when using a: 1. specified low voltage-directed with pulmonary vein isolation (LD+PVI) approach compared to , 2. empiric posterior wall isolation with pulmonary vein isolation (PW+PVI) approach compared to 3. an approach of pulmonary vein isolation (PVI) alone.

Alster-Lost-AF-Study

The chronic success rate, defined as freedom from any atrial tachyarrhythmias will increase from 35% to 60% by ablation of complex fragmented atrial electrograms potentials in addition to pulmonary vein isolation (PVI) as compared to PVI alone in patients with long-standing persistent AF.

Studying the Association Between Folic Acid Deficiency and Social Isolation for Elderly Patients

Social isolation among elderly people is a frequent and major determinant for health. The risk of premature death is 2 to 5 time higher for socially isolated people, similarly for morbidity, duration of healing and complications rate. Denutrition is also frequent for elderly people with potentially serious consequences. Vitamin deficiency, especially in B9 and B12 vitamins, are often associated with denutrition among elderly people. Folic acid (vitamin B9) is not influ...

Comparison of Two Pulmonary Vein Ablation Techniques for Persistent AF

Investigator initiated, randomized controlled trial of two radiofrequency (RF)ablation protocols currently performed in the electrophysiology lab, but have not been studied prospectively to identify which, if either technique, is superior for individuals with persistent atrial fibrillation (AF). Two-hundred subjects will be consecutively enrolled and randomized to either pulmonary vein isolation only or pulmonary vein isolation plus posterior left atrial wall isolation

Muscle Glycogen Synthesis When Caffeine and Protein is Co-Ingested With Carbohydrates

The aim of the present study is to investigate the effect of added protein+leucine or caffeine to 1.2 g/kg/h CHO on the rate of post-exercise muscle glycogen re-synthesis in healthy, recreational athletes. The investigators hypothesize that both interventions (the addition of caffeine or protein+leucine) will lead to higher glycogen re-synthesis compared to the ingestion of CHO only, and that the co-ingestion of protein and leucine will result in the highest muscle glyco...


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