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30 active trials for Safety

EMaBS TB Vaccine Study

The study will commence with a dose-escalation and age de-escalation study in healthy adults and adolescents from the previous Entebbe Mother and Baby Study (EMaBS) in Entebbe, Uganda, focusing on ChAdOx1 85A, to provide safety data for ChAdOx1 85A in this population. These measures are not required for MVA85A since this vaccine has been more widely used, including among adolescents in Uganda, and the dose has been standardised. ChAdOx1 85A dose escalation and age de-escalation will be followed by a Phase IIa randomised trial comparing the immunogenicity of ChAdOx1 85A and MVA85A with the immunogenicity of BCG revaccination. ChAdOx1 85A and MVA85A will be administered via the intramuscular route. The target dose for the Phase IIa trial is 2.5x10^10 viral particles (vp) because the lower dose is expected to have lower immunogenicity, based on the Oxford study, TB034. Data from the Oxford study suggest that this dose will be well tolerated. However, if this dose is not tolerated then the lower dose will be used. The dose of MVA85A will be 1 x 10^8 plaque-forming units (pfu) in the groups in which it is given. There will be 6 study groups with 3 to 30 volunteers in each group. Dose escalation for ChAdOx1 85A in adults Group 1: The first three adults will receive ChAdOx1 85A at 5 x10^9 vp. Group 2: The next three adults will be enrolled after safety data has been reviewed by the trial management team to one week after ChAdOx1 85A vaccination in group 1. These adults will receive ChAdOx1 85A at 2.5 x10^10 vp. Age de-escalation and dose escalation for ChAdOx1 85A in adolescents Group 3: The first three adolescents will be enrolled after safety data has been reviewed to one week after ChAdOx1 85A vaccination in group 2. These three adolescents will receive ChAdOx1 85A at 5 x10^9 vp Group 4. The next three adolescents will be enrolled after safety data has been reviewed to one week after ChAdOx1 85A vaccination in group 2. These three adolescents will receive ChAdOx1 85A at 2.5 x10^10 vp. Randomised comparison of ChAdOx1 85A-MVA85A versus BCG revaccination: Once safety data has been reviewed for groups 1 to 4 to one week post ChAdOx1 85A vaccination, recruitment to the randomised trial will commence. Sixty adolescents will be randomised, 30 (group 5) to receive ChAdOx1 85A at 2.5 x10^10 vp followed by MVA85A boost and 30 (group 6) to receive BCG revaccination. BCG will be obtained from the Serum Institute of India, an approved provider for Uganda, and used at the standard dose of 0.1mL. BCG will be given intradermally.

Start: July 2019
RCT of Efficacy and Safety of Sedation Compared to General Anesthesia for ERCP

There is a worldwide trend to minimally invasive interventions, which results in increasing numbers of interventions performed outside of the operating room. Currently, approximately 12 to 15% of total anaesthetic workload is non-operating room anaesthesia (NORA) and this anaesthetic activity is increasing. Many of these interventions need supplementary comfort measures to have relaxed patients and high success rates. Endoscopic retrograde cholangio-pancreatography (ERCP) is performed >50,000 times per year in the U.S.,and is a typical minimally invasive intervention that needs patient sedation. There is a controversy about the optimal comfort intervention in minimally invasive interventions and in particular in ERCP. Two different approaches to insure patients' comfort have been proposed: general anaesthesia with endotracheal intubation and mechanical ventilation or sedation with spontaneous ventilation. Well-performed studies on sedation versus general anaesthesia using a randomized controlled trial design with observer blinding will contribute to improve the decision-making for the optimal comfort measures in minimally invasive procedures. At our knowledge such a randomized controlled trial has not been reported before. The investigators hypothesize that deep sedation without tracheal intubation will achieve similar success rates for ERCP as general anaesthesia and will have similar rates of harmful postoperative effects. The primary aim of this trial is to demonstrate that the success rate of ERCP is not inferior in patients randomized to deep sedation without orotracheal intubation vs general anesthesia with orotracheal intubation. Secondary aims include a comparison between randomization groups of patient safety, patient and endoscopist satisfaction, duration of patient recovery and of anesthesia procedure.

Start: February 2014
Safety and Efficacy of Sodium Bicarbonate Ringer Injection

Objectives To observe whether sodium bicarbonate Ringer injections can reduce the incidence of postoperative complications in elderly patients undergoing abdominal surgery. To observe the effects of sodium bicarbonate Ringer injections on the internal environment, such as water, electrolytes, acid-base balance, and other physiological indexes, in the perioperative period of elderly patients undergoing abdominal surgery. Research design?This study adopts a multicenter, prospective, randomized, controlled, pragmatic clinical trials (PCT) research design. Sample size?5000 cases. Indication?The experimental group is the elderly patients undergoing abdominal surgery who were administered sodium bicarbonate Ringer injections intraoperatively; the control group is the elderly patients with abdominal surgery who were administered lactated Ringer's injections intraoperatively. Observational index Preoperative baseline data collection: General patient information: basic information (age, height, and weight), preoperative diagnosis, past history, auxiliary examination results, etc. Intraoperative data collection: Perioperative vital signs information and arterial blood gas analysis results; The surgical method, operation time, and anaesthesia time; Intraoperative fluid management: The total amount of intraoperative fluids, blood transfusion volume, bleeding volume, urine volume, types and dosage of vasoactive drugs, diuretic dosage, sodium bicarbonate dosage. Postoperative index: Postoperative blood biochemical examination: liver function, renal function (urea nitrogen, creatinine), osmotic pressure, lactic acid, and blood sugar levels; Postoperative complications and treatment status Postoperative recovery: postoperative outcome, length of hospital stay, admission to ICU (duration of stay), postoperative eating time, out of bed activity time, gastrointestinal recovery time (exhaust), time for removal of various tubes (gastric tube, urinary tube, and drainage tube), etc. The observation cut-off point is the patient's discharge. If the patient is still hospitalized 30 days after the operation, the observation will be terminated. Research process Elderly abdominal surgery patients who meet the inclusion criteria will be enrolled and randomly divided into two groups according to the intraoperative application of extracellular fluid supplements. The experimental group is sodium bicarbonate Ringer injection group, and the control group is sodium lactate Ringer injection. Basic preoperative information of patients will be collected. The vital signs, fluid treatment, and surgical anaesthesia will be recorded during the operation, while the recovery and postoperative complications will be recorded during postoperative visits. The ability of sodium bicarbonate Ringer injections to reduce postoperative complications in elderly patients undergoing abdominal surgery will be observed. The effects of sodium bicarbonate Ringer injection on the internal environment, such as water, electrolytes, acid-base balance, and other physiological indexes in elderly patients undergoing abdominal surgery will be observed and compared. The safety and efficacy of sodium bicarbonate Ringer injection in elderly patients with abdominal diseases will be comprehensively assessed.

Start: October 2020