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Surgery clinical trials

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NCT ID: NCT03734627 Enrolling by invitation - Surgery Clinical Trials

Gastrointestinal Nutrient Transit and Enteroendocrine Function After Upper Gastrointestinal Surgery

EndoGut
Start date: July 1, 2016
Phase:
Study type: Observational

The incidence of oesophagogastric cancer has increased by 400% since the 1970s in Ireland and the United Kingdom. In addition, refinement of perioperative management and the now widespread use of multimodal protocols for patients with locally advanced disease have significantly improved outcomes for patients with oesophagogastric cancer treatable with curative intent. Despite significant advances in chemoradiotherapy, surgical resection remains the primary curative option. Unintentional weight loss and nutritional complications represent serious concerns for patients after radical resection, even among those who remain free from recurrent disease in the long-term. A study from the Swedish Esophageal and Cardia Cancer Registry reported a mean three year weight loss of 10.8% among disease-free patients, with 33.8% of this cohort demonstrating malnutrition at three years post-oesophagectomy. Mechanisms contributing to weight loss for disease-free patients after upper gastrointestinal surgery are poorly understood, however an association between increasing magnitude of weight loss and the presence of increased satiety is described. Our recent studies at SJH have demonstrated four fold elevated postprandial satiety gut hormone concentrations after oesophagectomy, compared with baseline preoperative values. Postprandial gut hormone levels correlate significantly with postprandial symptoms and altered appetite at 3 months postoperatively, and with body weight loss at 2 years postoperatively. However, the mechanism leading to exaggerated postprandial gut hormone production after upper gastrointestinal surgery is poorly understood, limiting targeted therapeutic options. In this study, we aim to characterise the role of altered nutrient transit and enteroendocrine cell function in the pathophysiology of excessive post-prandial gut hormone responses after upper gastrointestinal surgery. To do this, we will measure the gut hormone response to a standardised 400 kcal meal, as per previous studies, while concurrently assessing gastrointestinal transit time, and enteroendocrine cell morphology and function. In this way, we will determine whether the magnitude of the postprandial gut hormone response correlates with the rate of nutrient transit into the enteroendocrine L-cell rich small intestine, and whether enteroendocrine cell adaptation occurs after oesophagectomy. Furthermore, we have previously observed that gut hormone suppression using octreotide is associated with increased ad libitum among subjects after upper gastrointestinal cancer surgery (Elliott JA et al, Annals of Surgery, 2015). The mechanism of action of octreotide may relate to SSTR-5-mediated negative feedback to the enteroendocrine L-cell, but this medication may additionally reduce enteroendocrine L-cell responses through its inhibitory effect on gastrointestinal motility - reducing the rapidity with which nutrients are delivered to the small intestine - and small intestinal nutrient sensing via inhibition of the Na+-dependent glucose transporter SGLT-18-10. Through conduction of this double-blind, randomised, placebo-controlled crossover study, we aim to establish the mechanism of action of octreotide-mediated increased food intake in patients after gastrointestinal surgery. This may inform the design of future targeted interventions for this patient group.

NCT ID: NCT03729180 Not yet recruiting - Surgery Clinical Trials

Pharmacogenomic Decision Making at Time of Surgery

Start date: October 7, 2019
Phase:
Study type: Observational

This study will enrolled adults undergoing planned elective surgical procedures. Participants will undergo a blood test for genetic testing. Results of the gene blood test will be used to create a drug-genetic profile which will include any information about variations in the participants genes that may have an effect on their response to, or the side effects they might experience from, certain medications, specifically including some medications that are often used immediately prior to and during surgery and in the post-surgical setting (anesthetics, medications for sedation, pain medications). The first 100 participants enrolled will undergo the genetic blood testing and have their drug-genetic profile released to their providers. This is the "run-in" period. After the run-in period is completed, participants will be randomly assigned to either receive a drug-genetic profile (intervention arm) or to no intervention (control arm) at time of surgery. Surgical providers will also be enrolled to assess how they use the drug-genetic profile information.

NCT ID: NCT03727503 Not yet recruiting - Surgery Clinical Trials

Casptesia Versus PICCO in Cardiac Surgical Patients in the ICU

Capstesia
Start date: November 1, 2018
Phase: N/A
Study type: Interventional

The goal of this study is to assess the ability of a new smartphone PPV app to predict fluid responsiveness in cardiac surgical patients in the Intensive care unit (in the postoperative period)

NCT ID: NCT03720860 Recruiting - Sepsis Clinical Trials

Inflammatory Mediators of Acute Kidney Injury in Intensive Care

PronMed
Start date: January 1, 2018
Phase:
Study type: Observational

Acute kidney injury (AKI) affects more than 50% of patients admitted to the intensive care unit. The most common underlying cause is sepsis. Severe AKI in combination with sepsis is associated with high mortality. The mechanisms for sepsis-induced AKI are largely unknown. Our hypothesis is that the inflammatory response to an infection cause collateral damage to host tissue and contributes to the development of AKI. In this study we want to investigate the presence of novel inflammatory mediators in patients with sepsis, patients subjected to major surgery (sterile inflammation) and non-inflamed patients and correlate their levels with the risk for AKI.

NCT ID: NCT03718312 Not yet recruiting - Surgery Clinical Trials

Evaluation of the Effectiveness of Ischemic Pre-conditioning on the Morbidity and Mortality of Open Surgery of Thoracoabdominal Aortic Aneurysms.

EPICATA
Start date: December 2018
Phase: N/A
Study type: Interventional

Patients having a planned open surgery of thoracoabdominal aortic aneurysms and enrolled in the study will be randomized the day of the surgery in 2 groups: - Arm 1 : Patients with aortic clamping with pre-conditioning - Arm 2 : Patients with aortic clamping without pre-conditioning Patients will be then followed, during 60 days after surgery.

NCT ID: NCT03716089 Not yet recruiting - Gastric Cancer Clinical Trials

Comparison of Tumor Efficacy Safety in Laparoscopic Resection of Gastrointestinal Stromal Tumors Between Favorable and Unfavorable Site

Start date: November 1, 2018
Phase:
Study type: Observational

Participants with gastrointestinal stromal tumors(GIST) were divided into favorable and unfavorable sites according to the anatomical site of the tumor, and this study aims to validate the overall postoperative morbidity and mortality rates between favorable site receiving laparoscopic resection of GIST and that of unfavorable site under the currently standard surgical therapy.

NCT ID: NCT03715348 Not yet recruiting - Surgery Clinical Trials

Trial of PCC Versus FFP in Patients Undergoing Heart Surgery

PROPHESY
Start date: December 1, 2018
Phase: Phase 2
Study type: Interventional

The PROPHESY trial is a single centre pilot trial investigating Fresh Frozen Plasma (FFP) or Prothrombin Complex Concentrate (PCC) treatment for patients who are bleeding during cardiac surgery, and who are NOT receiving a vitamin K antagonist agent (e.g. warfarin). This pilot study will investigate the feasibility of delivering the different components of the trial, so that investigators can determine if it's feasible to move to a future large trial that will aim to compare the efficacy and safety of FFP versus PCC in adult patients who are actively bleeding during cardiac surgery.

NCT ID: NCT03714399 Not yet recruiting - Surgery Clinical Trials

Muscle Recovery Following Aortic Surgery Induced ICUAW.

VARIANCE
Start date: December 1, 2018
Phase:
Study type: Observational

To identify determinants of 'good and bad recovery' from ICUAW and build knowledge around the timing of these processes. Also, the investigators want to discover the effects of ICUAW on physical function and HRQoL following aortic surgery.

NCT ID: NCT03711149 Not yet recruiting - Surgery Clinical Trials

Activity Monitor Feedback and Interactive Tours to Improve Postoperative Ambulation

Start date: October 22, 2018
Phase: N/A
Study type: Interventional

This is a randomized controlled trial that compares a system using activity monitors to provide real-time feedback on daily ambulation to patients undergoing major surgeries, paired with step-count-measured art tours of the surgical units, versus standard of care, on step count. The hypothesis is that the feedback system + art tours will encourage patients to ambulate more.

NCT ID: NCT03707015 Completed - Surgery Clinical Trials

Internal Limiting Membrane Flap in the Management of Retinal Detachment Due to Paracentral Retinal Breaks

Start date: January 2017
Phase:
Study type: Observational

To describe the technique and outcomes of using either inverted or free internal limiting membrane flap in the management of retinal detachment due to paracentral retinal breaks.