Large multicenter studies and meta-analysis have documented the diagnostic accuracy and the prognostic implications of stress echocardiography, cardiac magnetic resonance and, mainly, nuclear stress tests. However, none of them provides a comprehensive anatomical and functional evaluation within the same study as stress CT perfusion. Myocardial CT perfusion is the only non-invasive modality that allows to quantifying coronary stenosis and determining its functional relevance, constituting a potential "one-stop-shop" method for the diagnosis and global management of patients with known or suspected coronary artery disease. In comparison with the dynamic modality, that requires increased radiation, precise acquisition protocols and dedicated post-processing softwares, static CT perfusion was associated with less radiation exposure, non-inferior diagnostic accuracy, easier interpretation of images and is nowadays more widely available.
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http://dx.doi.org/10.1016/j.jcct.2019.09.002 | DOI Listing |
Exp Clin Transplant
December 2024
>From the Department of Hepatobiliary and Pancreatic Surgery and Liver Transplantation, Vall d'Hebron Hospital, Barcelona, Spain.
Marginal liver grafts, such as those from cardiac death donors and donors with steatotic organs, are highly vulnerable to ischemia-reperfusion injury. In addition, ex situ graft alteration, either by reduction or splitting, will prolong the static cold storage time and amplify the ischemia-reperfusion injury. Hypothermic oxygenated machine perfusion has the potential to end the oxygen deprivation during preservation and accordingly improve outcomes in some marginal grafts that have been traditionally discarded.
View Article and Find Full Text PDFAnesth Analg
September 2024
From the Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, Arizona.
Background: During orthotopic liver transplantation, allograft reperfusion is a dynamic point in the operation and often requires vasoactive medications and blood transfusions. Normothermic machine perfusion (NMP) of liver allografts has emerged to increase the number of transplantable organs and may have utility during donation after circulatory death (DCD) liver transplantation in reducing transfusion burden and vasoactive medication requirements.
Methods: This is a single-center retrospective study involving 226 DCD liver transplant recipients who received an allograft transported with NMP (DCD-NMP group) or with static cold storage (DCD-SCS group).
Sci Rep
January 2025
Center for Engineering in Medicine and Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Static cold storage of donor livers at 4 °C incompletely arrests metabolism, ultimately leading to decreases in ATP levels, oxidative stress, cell death, and organ failure. Hydrogen Sulfide (HS) is an endogenously produced gas, previously demonstrated to reduce oxidative stress, reduce ATP depletion, and protect from ischemia and reperfusion injury. HS is difficult to administer due to its rapid release curve, resulting in cellular death at high concentrations.
View Article and Find Full Text PDFSci Rep
January 2025
Institute for Anatomy und Cell Biology, Department of Medical Cell Biology, Philipps-Universität Marburg, Robert-Koch-Str. 8, 35032, Marburg, Germany.
Maximal isometric contraction time (MICT) is critical for most motor tasks and depends on skeletal muscle blood flow at < 40% of maximal voluntary strength (MVC). Whether limb work positions associated with reduced perfusion pressure and facilitated vessel compression affect MICT is largely unknown. In 14 healthy young men we therefore assessed bilateral handgrip MICT at 15, 20, 30, 40, and 70% of MVC in horizontal forearm positions of 0.
View Article and Find Full Text PDFLife (Basel)
December 2024
Department of Urology, Clínica Universidad de Navarra, 31008 Pamplona, Spain.
Chronic kidney disease (CKD) is a prevalent disease affecting almost 10% of the world's population, with many cases progressing to end-stage kidney disease (ESKD). Kidney transplantation (KT) is the gold-standard treatment for ESKD. Due to growing KT waitlists, the deceased kidney donor (DKDs) criteria have expanded to increase the number of available kidney grafts.
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