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401 active trials for Surgery

Multicenter Phase II Study of Transanal TME (taTME)

Radical rectal cancer resection, namely total mesorectal excision (TME), is the cornerstone of the treatment of resectable rectal cancer. In combination with chemotherapy and radiation treatment (CRT), complete TME with negative resection margins is associated with sustained local and systemic control even in locally advanced disease. Over the last 2 decades, laparoscopic and robotic techniques have been increasingly adopted due to reduced surgical trauma and faster patient recovery. Yet, both approaches are associated with equivalent postoperative morbidity and disturbances in sexual, urinary and defecatory function relative to open TME. Furthermore, laparoscopic and robotic TME remain associated with substantial conversion rates and variable rates of TME completeness as a result of the procedural difficulties reaching the low rectum from the abdominal approach. Transanal TME (taTME) with laparoscopic assistance was developed to facilitate completion of TME using a primary transanal endoscopic approach. Transanal TME uses a "bottom-up approach" to overcome the technical difficulties of low pelvic dissection using an abdominal approach. Published results from single-center taTME series and an international registry suggest the short-term procedural and oncologic safety of this approach in resectable rectal cancer. No multicenter phase II study has yet been conducted to validate the procedural safety, functional outcomes or long-term oncologic outcomes of this approach. Study Design: This is a 5-year phase II multicenter single-arm study to evaluate the safety and efficacy of low anterior resection (LAR) with taTME using laparoscopic or robotic assistance in 100 eligible subjects with resectable rectal cancer. Hypothesis: taTME is non-inferior to standard LAR with respect to the quality of the TME achieved.

Start: April 2017

The OPERa Study: Evaluating QoL After Rectal Cancer Surgery

Advances in rectal cancer management have significantly reduced morbidity and mortality. The most commonly performed operation for rectal cancer is restorative proctectomy (RP), leaving up to 70% with long-term bowel dysfunction called Low Anterior Resection Syndrome (LARS). LARS manifests as stool frequency, incontinence and difficult defecation. LARS, along with other functional impairments such as sexual and urinary dysfunction (SUD), can impact quality of life (QoL) and cause emotional distress. There is no well-established treatment strategy for LARS or SUD. High-quality longitudinal data on these sequalae are lacking, leading to variable estimates of their prevalence, risk factors and prognosis. Most studies are European, cross-sectional, lack pre-treatment evaluation and long-term follow-up, and use inconsistent assessment measures. Thus, a North American study that evaluates patients longitudinally from diagnosis will provide quality data to fill this knowledge gap. The main aim of the proposed study is to contribute evidence regarding the impact of LARS, SUD, emotional/financial distress, and patient activation on long-term post-treatment QoL in North American rectal cancer after RP. This study aims to address the following research questions: 1): How do North American rectal cancer patients who underwent RP experience changes in function (bowel, sexual and urinary), distress (emotional and financial) and QoL after RP from baseline through early and late timepoints following treatment? 2): How do patient-, disease-, treatment-, functional- and distress-related factors predict QoL at baseline and at early and late timepoints post-treatment? This multicenter North American, observational, prospective cohort study relies on validated patient reported outcome measures (PROMs) at diagnosis, during and post-treatment. Patients from 20 sites will be recruited over 2 years and followed for 3 years. The primary endpoint is QoL as measured by the European Organization for Research & Treatment of Cancer QoL questionnaire. We anticipate accrual of 1200 patients. Estimating a 30% attrition rate, in 1000 different simulated datasets and ?=0.05, we will be able to detect a 1 point difference in QoL 88% of the time (95%CI: 85.8, 90.0). Given that a 10-point difference is considered clinically significant, this sample size affords good precision. 1) QoL, LARS, SUD, emotional/financial distress will be measured at baseline, early (12 & 18 months) and late (2 & 3 years) timepoints. 2) Changes over time for each outcome will be studied using linear mixed models (LMM) and generalized LMM as appropriate to account for the hierarchical and longitudinal structure of the data. 3) Factors associated with QoL will be explored using LMM. 4) Impact of patient activation in relation to functional outcomes on QoL over time will be explored using a difference-in-differences approach. The study involves a multidisciplinary team who will provide expertise in research methodology, nursing, oncology and surgery. The main contributions of this study are 1) provision of reference baseline North American values for important rectal cancer PROMs for clinical and research use, 2) an understanding of the evolution of functional outcomes and QoL post-treatment to counsel patients peri-operatively and throughout survivorship, and 3) to provide the basis for future tailored programs to support rectal cancer survivors.

Start: September 2021

Tension Band Versus Locking Plate Fixation for the Treatment of Patella Fractures

This study is a multicenter pragmatic, prospective, assessor-blinded, randomized independent clinical trial in which we compare locking plate fixation to standard tension band fixation in patients with patella fractures.

Start: September 2021

Transfusional Trigger in Post-operative Oncologic Patients in Critical Care

Transfusional practices evolved significantly over the last decades, but there are still important controversies regarding triggers that should be adopted in different clinical scenarios. Most international guidelines recommend using a hemoglobin (Hb) level around 7,0-8,0g/dL as the value to prompt a transfusion of red blood cell concentrates (RBC). Critical care patients usually are in a hyperdynamic state, working with an elevated cardiac output and compromised organ function. In these patients, the dependency on the arterial content of oxygen is greater, making lower Hb levels more associated with organ disfunction and compromised homeostasis. With this study the investigators hope to help clinicians to make decisions regarding transfusion of RBCs in critical surgical patients, establishing a transfusional trigger, without exposing patients to unnecessary additional risks, in the scenario involving patients with cancer, in post-operative care. This is a prospective, randomized, controlled, interventional trial, with the aim of evaluating the impact of restrictive versus liberal transfusional strategy on mortality and severe clinical complications in post-operative oncologic critically ill patients. The primary outcome is mortality in 30 days. The interventions consist in transfusion of RBCs according to the allocation to a liberal or restrictive transfusional strategy. In the restrictive strategy arm patients will receive transfusion of RBCs if the Hb falls to a level equal to or below 7,0g/dL. In the liberal strategy arm patients will receive transfusions if Hb level is below or equal to 9,0g/dL. In both arms patients should receive only one unit of RBC per time, with measurement of Hb level after three hours to evaluate the need for additional units. The strategy should be maintained during intensive care unit (ICU) stay for a maximum of 90 days. In case of a permanence in the ICU for a period longer than 90 days, or if the patient is discharged from the ICU, the transfusional support will be determined by the assisting physicians, independently of the allocated study arm. If the patient returns to the ICU during the 90 days of randomization, then he should go back to receiving transfusions according to the liberal or restrictive strategy in use previously in the ICU.

Start: May 2021

Risk Factors and Prevention of Severe Pain Upon Cessation of a Peripheral Nerve Block

Risk factors and Prevention of severe Pain upon cessation of a peripheral nerve block. A prospective randomized study in ambulatory patients undergoing upper limb bone surgery under single shot axillary plexus block.

Start: January 2020

Respiratory Strength Training in Cardiac Surgical Patients

Swallowing difficulty (dysphagia) is a common postoperative complication in patients who undergo cardiac surgical procedures. Postoperative dysphagia in cardiac surgical patients is associated with negative health-related outcomes including increased rates of pneumonia, reintubation, and death as well as increased length of hospital stay and costs of care. This study will examine the safety, feasibility, and impact of preoperative respiratory strength training (RST) on swallowing and associated health-related outcomes in cardiac surgical patients. We hypothesize that preoperative RST will be safe, well-tolerated, and lead to improved swallowing and health-related outcomes in cardiac surgical patients.

Start: June 2021

Intraoperative Hemodynamic Management and Postoperative Outcomes in Liver Transplantation

The overarching objective of the research program entitled ELIPTO (Enhancing Liver Insufficiency and Postoperative Transplantation Outcomes) (www.elipto.ca) is to improve the perioperative care of liver transplant recipients. One of this program's purposes is to better define the effects of intraoperative hemodynamic management on postoperative outcomes in adult liver transplant recipients. In this study, the incidence of postoperative complications within this population will be defined in Canada and the association between intraoperative hemodynamics and postoperative outcomes will be measured. Liver transplantation improves the survival of patients with end-stage liver disease (ESLD). It is the second most transplanted organ with a continuously increasing annual number of transplantations, an observation partly explained by an endemic ESLD etiology in the United States, the obesity-related non-alcoholic steatohepatitis (NASH) cirrhosis. In recent decades, although sicker patients are prioritized, survival has improved possibly through an overall improvement in the quality of care. However, postoperative complications have concomitantly increased. On average, liver transplant recipients suffer from more than three postoperative complications, mainly infectious, pulmonary, renal or graft-related, two thirds of them being severe. In a low-risk patients cohort, close to 60% of all patients suffered from at least one severe complication up to 6 months after surgery. Such complications increase mortality, readmissions and cost of care. Organs available for transplantation are a scarce resource; up to 10% of grafts are no longer functional after one year. Interventions that improve patients' postoperative and graft outcomes are needed and few perioperative ones are supported by high-quality evidence.

Start: June 2021

One-stage Adjustable Strabismus Surgery Under AIVOC

The purpose of this study is to note that one-stage adjustable surgery can be enough to provide satisfactory results for the correction of strabismus in adults thanks to the use of an anesthesia type AIVOC (Target-controlled infusion of Propofol-Remifentanyl)

Start: January 2020

COgnitive and Physical Exercise to Improve Outcomes After Surgery (COPE-iOS) Study

The COgnitive and Physical Exercise to improve Outcomes after Surgery (COPE-iOS) study is testing the hypothesis that a pragmatic program combining computerized cognitive training and physical training throughout the perioperative period will improve long-term cognitive and disability outcomes in older surgical patients at high risk for decline. To accomplish these goals, the Investigators are randomizing 250 patients ?60 years old undergoing elective major non-cardiac surgery with expected hospitalization ?3 days to a pragmatic comprehensive training program (computerized cognitive training and supervised progressive physical exercise) or to active control (control computer game, stretching exercises) for 2-4 weeks prior to surgery and for 3 months after discharge. At baseline and after discharge, the Investigators will assess global cognition, activities of daily living, depression, endothelial and blood brain barrier function (blood biomarkers), and neuroimaging (anatomical and functional MRI). In this early stage trial, the Investigators will determine if certain subgroups benefit most, program aspects with greatest effect on outcomes, mechanistic associations with outcomes, and additional exploratory analyses.

Start: June 2021

Post-Surgical Based Efforts to Reduce Preventable Readmissions and Optimize Length of Stay

The investigators believe that hospital readmissions for intermediate- to high-complexity surgeries can be reduced by remote patient monitoring follow-up post-discharge, which involves daily touchpoints with a clinical nurse, vital sign evaluation and a symptom directed communication escalation process.

Start: April 2021

National Register Studies in Thoracic Surgery

The overall project aim is to study risk and outcomes following thoracic surgery by cross-linking high-quality national Swedish health-data registers for population-based investigations of individual level clinically relevant patient data.

Start: January 2018

Post-operative Course of Dexamethasone to Reduce Tonsillectomy Morbidity

The goal of this study is determine if an oral systemic course of steroids is a safe and effective option in lowering pain and complications following adenotonsillectomy in various pediatric age groups. A double blind, placebo-controlled randomized clinical trial of steroids (dexamethasone) versus placebo postoperatively will be performed. Investigators will determine if there is a difference in post-operative pain and complications between groups.

Start: June 2021

Post Discharge After Surgery Virtual Care With Remote Automated Monitoring Technology (PVC-RAM) -2 Trial

The Post discharge after surgery Virtual Care with Remote Automated Monitoring technology (PVC-RAM)-2 Trial is a multicentre, parallel group, superiority, randomized controlled trial to determine the effect of virtual care with remote automated monitoring (RAM) technology compared to standard care on acute-hospital care during the 30-day follow up after randomization, in adults who have undergone semi-urgent (e.g., oncology), urgent (e.g., hip fracture), or emergency (e.g., ruptured abdominal aortic aneurysm) surgery. Secondary outcomes at 30 days after randomization include 1) hospital re-admission; 2) emergency department visit; 3) medication error detection; 4) medication error correction; and 5) surgical site infection. Additional secondary outcomes are pain of any severity, and moderate-to-severe pain assessed at 7, 15, and 30 days. We will also assess optimal management of long-term health by evaluating among patients with atherosclerotic disease whether patients are taking classes of efficacious medications at 30 days.

Start: May 2021

ANI-guided Intraoperative Analgesia vs Conventional Intraoperative Analgesia

This study evaluates the effects of Analgesia Nociception Index (ANI)-guided intraoperative analgesia on postoperative pain in patients undergoing open gynecologic surgery.

Start: May 2021

BIA Assessment of Polymyoneuropathy in Critically Ill Patients

The aim of the study is to monitor and evaluate changes in body composition, with a special emphasis on muscle mass, in the context of polyneuromyopathy of critically-ill patients at ICU, on artificial ventilation (duration of artificial ventilation at least 7 days), and subsequent comparison with the patient's condition in 12 weeks, as a part of Post-Intensive Care Syndrome (PICS) monitoring. The effect of the package (nutritional recommendations + physiotherapy protocol vs. standard of care) will be evaluated.

Start: March 2021

Virtual Assistant for Plastic Surgery Patients

Researchers are trying determine the long term impact when patients have access to the artificial intelligence virtual assistant (AIVA) as a complimentary resource.

Start: April 2020

Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy

This study evaluates the difference in results between eyes that have been treated wavefront optimized laser vision correction (either LASIK or Photorefractive Keratectomy) compared to eyes treated with topography-guided laser vision correction (either LASIK or Photorefractive Keratectomy). Each participant will receive wavefront optimized correction in one eye and topography-guided correction in the other.

Start: February 2017

Thoracic Epidural Analgesia vs Surgical Site Infiltration With Liposomal Bupivacaine Following Open Gynecologic Surgery

The goal of this study is to test the hypothesis that surgical site infiltration with liposomal bupivacaine (LB) is non-inferior to and more cost effective than thoracic epidural analgesia (TEA) for patients undergoing open gynecologic surgery on an established enhanced recovery program (ERP) using a non-inferiority randomized trial design. The impact of TEA and surgical site infiltration with LB on neuroendocrine and inflammatory mediators of surgical stress response (SSR) will also be investigated as a translational endpoint.

Start: April 2021

NerveTrend vs. i-IONM in Prevention of Recurrent Laryngeal Nerve Events During Bilateral Thyroid Surgery.

The aim of this study is to compare two distinct modes of NIM Vital application in thyroid surgery: i-IONM vs. NerveTrend mode with respect to prevalence of early postoperative RLN injury. The hypothesis explored in this study is that NerveTrend mode may be more accurate than conventional i-IONM mode in intraoperative identification of impending neural injury and in prognostication of postoperative glottis function in monitored bilateral thyroid surgery. Hence, NerveTrend mode may be considered a bridge between i-IONM and c-IONM modes, and particularly in health care environments with limited financial resources it can be considered a substantial step forward representing a modern alternative to the c-IONM technique and providing benefits over conventional i-IONM mode. A prospective, randomized study with 2 arms: i-IONM vs. NeveTrend mode (n=132 patients and 264 nerves at risk, each). The primary outcome measure is prevalence of recurrent laryngeal nerve (RLN) injury (%) on postoperative day 1 assessed by direct laryngoscopy.

Start: April 2021

Cetuxibab to Reduce Circulating Tumor Cells in Early Stage NSCLC

Cetuximab to reduce the amound of circulating tumor cells in early stage NSCLC

Start: June 2021