Publications by authors named "Maria Rosal Martins"

Regional cerebral oxygen saturation (rS o2 ) obtained from near-infrared spectroscopy (NIRS) provides valuable information during cardiac surgery. The rS o2 is calculated from the proportion of oxygenated to total hemoglobin in the cerebral vasculature. Root O3 cerebral oximetry (Masimo) allows for individual identification of changes in total (ΔcHbi), oxygenated (Δ o2 Hbi), and deoxygenated (ΔHHbi) hemoglobin spectral absorptions.

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Background: Postoperative delirium (POD) is a frequent complication in older patients. Dexmedetomidine might be effective in decreasing the incidence of POD. We hypothesised that adding low-dose rate dexmedetomidine infusion to a propofol sedation regimen would have fewer side-effects and would counteract the possible delirium producing properties of propofol, resulting in a lower risk of POD than propofol with placebo.

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Background: In congenital cardiac surgery, priming cardiopulmonary bypass (CPB) with fresh frozen plasma (FFP) is performed to prevent coagulation abnormalities. The hypothesis was that CPB priming with crystalloids would be different compared with FFP in terms of bleeding and/or need for blood product transfusion.

Methods: In this parallel-arm double-blinded study, patients weighing between 7 and 15 kg were randomly assigned to a CPB priming with 15 ml · kg PlasmaLyte or 15 ml · kg FFP in addition to a predefined amount of packed red blood cells used in all patients.

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Studies have associated electroencephalogram (EEG) suppression with postoperative delirium (POD) and postoperative cognitive decline (POCD). Otherwise, improving cerebral tissue oxygen saturation (rScO) seems beneficial. No study has evaluated the impact of EEG suppression and decreased rScO on the incidence of POD and POCD when the intraoperative management of patients is performed with a depth-of-anesthesia (DOA) monitor and a cerebral oximetry.

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Introduction: The authors modified an adult jet ventilation injector (Hunsaker Mon-Jet Ventilation Tube(®)) to be able to provide transglottal high-frequency jet ventilation (HFJV) in small children undergoing laryngeal procedures with CO2 laser.

Methods And Material: Retrospective review of the anesthetic records of all children younger than 2years undergoing transglottal HFJV for CO2 laser laryngeal procedures using this modified adult injector between 2006 and 2013.

Results: Nine children (5 boys, 4 girls) were identified who underwent a total of 20 procedures.

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