The Journal of surgical research
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Bioluminescence imaging (BLI) is an ideal tool for noninvasive, quantitative monitoring of tumor progression/regression in animal models. The effectiveness of different treatment strategies is displayed by an altered intensity of bioluminescence, demonstrating a change of the tumor burden. The aim of this study was to establish a reliable, reproducible colorectal hepatic metastases cancer animal model. ⋯ BLI is an important tool with many potential advantages for investigators. The measurement of intrahepatic tumor growth by imaging luciferase activity noninvasively provides valuable information on tumor burden and effectiveness of therapy. Thus, the presented intrahepatic metastases model based on the growth of HCT-116 Luc(pos) cells is suitable for in vivo testing of different cancer therapy strategies.
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Operations on the infrarenal aorta can cause ischemic-reperfusion (IR) injury in local tissues, which could result in remote organ (e.g., lung) damage. Treatment of such injuries remains an unresolved problem. ⋯ Postconditioning reduced lung damage under experimental conditions, in the early period of reperfusion after lower limb IR injury.
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Randomized Controlled Trial Comparative Study
Long-term patient perception of pain control experience after participating in a trial between patient-controlled analgesia and epidural after pectus excavatum repair with bar placement.
Pain control is the dominant management issue after bar placement for pectus excavatum. We previously conducted a prospective, randomized trial comparing patient-controlled analgesia (PCA) to thoracic epidural (EPI) documenting similar objective outcomes. Our impression is that the subjective cognitive experience differs between the groups, which impacts trial results interpretation. Therefore, we conducted a survey to ascertain patient recollection and impression of their experience. ⋯ Long-term recall after repair of pectus excavatum with bar placement does not substantially differ between those managed with an epidural or PCA.
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We evaluated the effect of incomplete revascularization (IR) on the long-term outcomes after off-pump coronary artery bypass grafting. ⋯ CR in off-pump coronary artery bypass grafting was related to superior cardiac survival after 5 years of follow-up compared with IR. The benefit of CR was more distinct in those with a low LVEF. CR should be achieved whenever possible, especially in patients with a low LVEF.
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Comparative Study
Initial assessment on the impact of crystalloids versus colloids during damage control resuscitation.
High ratios of fresh frozen plasma:packed red blood cells in damage control resuscitation (DCR) are associated with increased survival. The impact of volume and type of resuscitative fluid used during high ratio transfusion has not been analyzed. We hypothesize a difference in outcomes based on the type and quantity of resuscitative fluid used in patients that received high ratio DCR. ⋯ During high ratio DCR, resuscitation with higher volumes of crystalloids was associated with an overall decreased survival, whereas low volumes of colloid use were associated with increased survival. In order to improve outcomes without diluting the survival benefit of hemostatic resuscitation, guidelines should focus on effective low volume resuscitation when high ratio DCR is used. A multi-institutional analysis is needed in order to validate these results.