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This research study will be conducted in two parts. The first part will consist of selecting appropriate screening and assessment tools for Veterans undergoing elective surgery and identifying the number of Veterans who are malnourished and at risk of malnutrition. The second portion of the study will be to determine if a protein-enhanced diet before and after surgery will improve function and postoperative outcomes and compare the results to an education control group.
The waveform plethysmographic signal can be used to establish an index for predicting fluid responsiveness (∆POP: respiratory variation of the plethysmographic waveform of pulse oximetry). This index was validated in some studies and because of its non-invasiveness it seems very interesting in anesthesia. However, in a previous study the investigators evaluated the correlation between the results provided by this index (∆POP) and those of the reference index (∆PP: pulse pressure variation), and the obtained results were significantly lower than what had been previously described. In this study, the index was calculated from a recording of a filtered signal. This unavoidable application of a filter on anesthesia monitors could contribute to the discrepancy between the ∆POP and the ∆PP. The realization of a new study, comparing ∆PP and ∆POP obtained from an unfiltered plethysmographic signal, should answer the ∆POP ability to be used in place of ∆PP.
The aim of this study is to find which is the best nutritional strategy in cancer patients undergoing abdominal surgery regarding postoperative complications.
The aim of this study is to examine the safety and effectiveness of 2 morphine delivery systems for post-surgical neonates. The investigators hypothesize that this study will be feasible to conduct, and that neonates receiving morphine via a Parent/Nurse Controlled Analgesia pump will receive less morphine and experience fewer side effects than neonates receiving morphine via continuous opioid infusion.
The investigators validated ICG's(impedance cardiography) usefulness during the abdominal surgery, by comparing it with FloTrac/Vigileo™ (Edwards Lifesciences,Irvine, CA, USA)
The purpose of this study is to investigate the effect of continuous perioperative infusion of prostacyclin on haemostasis and endothelial functionality in patients undergoing major abdominal surgery.
The optimal fluid regimen, haemodynamic (or other) targets and fluid choice (colloid or crystalloid) for patients undergoing major surgery are based on rationales that are not supported by strong evidence. Practices vary substantially, guidelines are vague, small trials and meta-analyses are contradictory. The strongest and most consistent evidence, and biological plausibility because of tissue edema, supports a restrictive fluid strategy. But other evidence supports goal-directed therapy, requiring additional IV fluid. There is no good evidence that use and choice of colloids improves outcome. RELIEF will study the effects of fluid restriction, and the possible effect-modification of goal-directed therapy and colloids. The first will be randomly assigned; the latter will be measured covariates dictated by local practices and beliefs. Study Hypotheses A restrictive fluid regimen for adults undergoing major abdominal surgery leads to reduced complications and improved disability-free survival when compared with a liberal fluid regimen. Secondary hypothesis: The effects of fluid restriction are similar whether or not goal-directed therapy is used (assessed as a statistical test of interaction). A restrictive fluid regimen will reduce a composite of 30-day septic complications and mortality.
The purpose of this study is to assess the roll of pre-operative chest physiotherapy, in addition to the usual care given after major abdominal surgery, in the prevention of post-operative respiratory complications.
This is a research study testing SABER™-Bupivacaine (an experimental pain-relieving medication). SABER™-Bupivacaine is designed to continuously deliver bupivacaine, a common local anesthetic, for a few days in order to treat local post-surgical pain. The purpose of this study is to investigate safety (side effects) associated with the use of SABER™-Bupivacaine and how well it works in reducing pain and opioid-related side effects following various kinds of abdominal surgeries.
Hypothesis: Plastic wound retractors reduce passage of bacteria from the abdomen to the surgical incision site in abdominal surgery Currently, plastic wound retractors are used in abdominal surgery to facilitate access to the abdominal cavity. This study aims to establish whether they also prevent bacteria crossing from the abdominal cavity to the surgical incision site. Patients undergoing abdominal surgery in which a plastic wound retractor (Alexis®)is used are eligible for inclusion in the study. Swabs are taken from the inside and the outside of the plastic wound retractor prior to removing the retractor from the abdomen. The bacterial flora from swabs taken inside and outside the plastic wound protector are then compared to see if there is any difference between inside and outside the retractor. Bacteria are classified as 'enteric'(i.e. from the gastrointestinal tract) or 'skin' bacteria, depending on their usual location. The study aims to establish whether a plastic wound retractor (Alexis®) reduces translocation of enteric bacteria to the surgical incision site.