Publications by authors named "Gleicy Keli Barcelos"

9 Publications

  • Page 1 of 1

Goal-directed hemodynamic therapy versus restrictive normovolemic therapy in major open abdominal surgery: A randomized controlled trial.

Surgery 2020 Oct 31. Epub 2020 Oct 31.

Department of Anesthesiology, Pharmacology, Intensive Care, and Emergency Medicine, University Hospital of Geneva, Switzerland; Faculty of Medicine, University of Geneva, Switzerland. Electronic address:

Background: The aim of this study was to compare the occurrence of postoperative complications in patients undergoing elective open abdominal surgery and receiving intraoperative goal-directed hemodynamic therapy or restrictive normovolemic therapy.

Methods: A total of 401 patients were randomized in the goal-directed hemodynamic therapy or restrictive normovolemic therapy groups. A cardiac output monitor was used in all goal-directed hemodynamic therapy patients and was left at the discretion of anesthetists in charge of patients in the restrictive normovolemic therapy group. The primary outcome was a composite morbidity endpoint (30-day mortality and complications grade 2-4 according to Dindo-Clavien classification). Secondary outcomes were the hospital duration of stay, the incidence of pulmonary, cardiovascular, and renal complications up to 30 days after surgery, and midterm survival.

Results: Intraoperatively, the goal-directed hemodynamic therapy group received higher intravenous fluid volumes (mean of 10.8 mL/kg/h and standard deviation of 4.0) compared with the restrictive normovolemic therapy group (mean of 7.2 mL/kg/h and standard deviation of 2.0; P < .001). On the first postoperative day, similar fluid volumes were infused in the 2 groups. The primary outcome occurred in 57.7% of goal-directed hemodynamic therapy and 53.0% of restrictive normovolemic therapy (relative risk, 1.09 [95% confidence interval, 0.91-1.30]), and there was no significant difference between groups for any secondary outcomes.

Conclusion: Among patients undergoing major open abdominal surgery, the goal-directed hemodynamic therapy and the restrictive normovolemic therapy were associated with similar incidence of moderate-to-severe postoperative complications and hospital resource use.
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October 2020

Easy-to-prescribe nutrition support in the intensive care in the era of COVID-19.

Clin Nutr ESPEN 2020 10 31;39:74-78. Epub 2020 Jul 31.

Division of Intensive Care, Department of Acute Medicine, Geneva University Hospitals, Switzerland. Electronic address:

Background & Aims: COVID-19 pandemic had resulted in a massive increase in the number of patients admitted to intensive care units (ICUs). This created significant organizational challenges including numerous non-specialist ICU caregivers who came to work in the ICU. In this context, pragmatic protocols were essential to simplify nutritional care. We aimed at providing a simple and easy-to-prescribe nutritional protocol and evaluated its usefulness with questionnaires sent to physicians involved in the care of ICU COVID-19 patients.

Methods: A simplified nutrition protocol was distributed to all physicians (n = 122) of the ICU medical team during COVID-19 pandemic. Clinical dieticians estimated energy targets for acute and post-acute phases at patient's admission and suggested adaptations of nutrition therapy. More complex situations were discussed with clinical nutrition doctors and, if required, a clinical evaluation was performed. To further facilitate the procedure, a chart with prescription aids was also distributed to the whole medical ICU team. At the end of the current pandemic wave, a 13-item questionnaire was emailed to the ICU medical team to obtain their opinion on the suggested nutritional therapy.

Results: Answers were received from 81/122 medical doctors (MDs) (66% response rate), from intensive care physicians (41%), anaesthesiologists (53%) and MDs from other specialties (6%). Thirty-two percent of MDs felt that their knowledge of nutrition management was insufficient and 45% of the physicians surveyed did not face nutrition management in their daily practice prior to the pandemic. The initially proposed nutritional protocol, the chart with prescription aids and the suggested nutritional proposals were considered as useful to very useful by the majority of physicians surveyed (89.9, 90.7 and 92.1% respectively). The protocol was followed by 92% of MDs, and almost all participants (95%) were convinced that adaptations of nutritional therapy had beneficial effects on patients' outcomes.

Conclusions: Nutritional therapy in critically ill COVID-19 patients is a challenge and the implementation of this specific pandemic simplified nutritional protocol was assessed as useful by a great majority of physicians. Pragmatic and simplified protocols are useful for ensuring the quality of nutritional therapy and could be used in future studies to assess its actual impact on the clinical outcomes of COVID-19 patients.
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October 2020

Preparedness and Reorganization of Care for Coronavirus Disease 2019 Patients in a Swiss ICU: Characteristics and Outcomes of 129 Patients.

Crit Care Explor 2020 Aug 29;2(8):e0173. Epub 2020 Jul 29.

Division of Intensive Care, Geneva University Hospitals and the University of Geneva Faculty of Medicine, Geneva, Switzerland.

Objectives: In many countries, large numbers of critically ill patients with coronavirus disease 2019 are admitted to the ICUs within a short period of time, overwhelming usual care capacities. Preparedness and reorganization ahead of the wave to increase ICU surge capacity may be associated with favorable outcome. The purpose of this study was to report our experience in terms of ICU organization and anticipation, as well as reporting patient characteristics, treatment, and outcomes.

Design: A prospective observational study.

Setting: The division of intensive care at the Geneva University Hospitals (Geneva, Switzerland).

Patients: All consecutive adult patients with acute respiratory failure due to coronavirus disease 2019 admitted in the ICU between March 9, 2020, and May 19, 2020, were enrolled. Patients' demographic data, comorbidities, laboratory values, treatments, and clinical outcomes were collected.

Interventions: None.

Measurements And Main Results: The ICU was reorganized into cells of six to eight patients under the care of three physicians and five nurses. Its capacity increased from 30 to 110 beds, fully equipped and staffed, transforming the surgical intermediate care unit, the postoperative care facility, and operating theaters into ICUs. Surge capacity has always exceeded the number of patients hospitalized. Among 129 critically ill patients with severe acute hypoxemic respiratory failure, 96% required invasive mechanical ventilation. A total of 105 patients (81%) were discharged alive and 24 died, corresponding to a mortality of 19%. Patients who died were significantly older, with higher severity scores at admission, had higher levels of d-dimers, plasma creatinine, high-sensitive troponin T, C-reactive protein, and procalcitonin, and required more frequent prone sessions.

Conclusions: A rapid increase in ICU bed capacity, including adequate equipment and staffing, allowed for a large number of critically ill coronavirus disease 2019 patients to be taken care of within a short period of time. Anticipation and preparedness ahead of the wave may account for the low mortality observed in our center. These results highlight the importance of resources management strategy in the context of the ongoing coronavirus disease 2019 pandemic.
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August 2020

Assessment of spontaneous neuromuscular recovery: A comparison of the TOF-Cuff with the TOF Watch SX.

Acta Anaesthesiol Scand 2020 02 28;64(2):173-179. Epub 2019 Oct 28.

Division of Anaesthesiology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, Geneva, Switzerland.

Background: TOF-Cuff is a modified blood pressure cuff used to monitor neuromuscular block. We compared the assessment of spontaneous neuromuscular recovery between TOF-Cuff (test device) and TOF Watch SX (reference device).

Methods: Forty patients aged 18-65 years undergoing elective surgery were enrolled. TOF-Cuff was installed on an upper arm and the TOF Watch SX on the thumb of the opposite side. Anaesthesia was induced and maintained with intravenous propofol and sufentanil. After induction, the devices were calibrated and continuous train-of-four (TOF) stimulation was started. A single intravenous dose of rocuronium (0.6 mg kg ) was administered for intubation. The primary outcome was total recovery time (time in minutes from the injection of rocuronium to a normalized TOF ratio of 90%). Agreement between the two devices was calculated using mean difference and limits of agreement.

Results: The primary outcome could be analysed in 27 patients because of 13 exclusions due to neuromuscular block reversal for shorter procedure surgical time, necessity of reinjection of rocuronium or technical failures of one of the two devices. Median total recovery time with the test device was 45 minutes (interquartile range [IQR] 38.5-61.5) and 63 minutes (IQR 51.1-74.5) with the reference device. Total recovery time with the test device was on average 16.4 minutes shorter (limits of agreement, -6.1 to 39); increasing total recovery time was associated with increasing difference. The TOF ratio of the reference device was on average 0.59 (SD 0.23) when the test device indicated complete recovery. The TOF ratio of the test device was on average 0.98 (SD 0.03) when the reference device indicated complete recovery.

Conclusion: When compared with the TOF Watch SX , TOF-Cuff overestimates spontaneous recovery of a rocuronium-induced neuromuscular block.
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February 2020

Atypical clinical presentation of variant Creutzfeldt-Jakob disease.

Eur J Anaesthesiol 2019 09;36(9):714-715

From the Division of Anaesthesiology, Department of Anaesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals, Geneva, Switzerland (GKB, GH), Infection Control Program, WHO Collaborating Centre on Patient Safety, Geneva University Hospitals, Geneva, Switzerland (MA), Biochemistry-Molecular Biology Division, Neurobiology and Prion Diseases Laboratory, University Hospital of Lyon, Lyon, France (AP-L), University of Lyon 1, CNRS UMR5292, INSERM U1028, BioRan, Lyon, France (AP-L), and Hospital Strategic Project of Quality Improvement, Geneva University Hospitals, Geneva, Switzerland (GH).

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September 2019

A Case of Persistence of Normal Tissue Oxygenation Monitored by Near-Infrared Spectroscopy (NIRS) Values Despite Prolonged Perioperative Cardiac Arrest.

Am J Case Rep 2019 Jan 5;20:21-25. Epub 2019 Jan 5.

Department of Anesthesiology, University Hospitals of Geneva, Geneva, Switzerland.

BACKGROUND Patients undergoing cardiac surgery are at risk of adverse perioperative neurological complications. Cerebral oximetry monitoring is increasingly used in these patients to detect intraoperative cerebral hypoxia or ischemic events. Near-infrared spectroscopy (NIRS) uses the near-infrared region of the electromagnetic spectrum for oximetry imaging. A case is reported of the persistence of normal tissue oxygenation monitored by NIRS values despite a prolonged perioperative cardiac arrest. CASE REPORT A 65-year-old man was admitted to the Emergency Department with dysarthria, left facial ptosis, left hemiplegia, and arterial hypotension of 75/50 mmHg. Computed tomography (CT) angiography showed a Stanford type A aortic dissection extending to the right common carotid artery. Shortly after arrival in the operating room, his hemodynamic condition rapidly deteriorated resulting in cardiac arrest. Despite the rapid onset of extracorporeal circulation, adequate systemic blood flow could not be restored. Cerebral NIRS values remained within the normal range (70-80%) from the start of emergency resuscitation, during a prolonged period of extremely low global blood perfusion values, and until all resuscitation ceased. CONCLUSIONS Cerebral oximetry values reflect a balance between cerebral oxygen delivery and consumption. This case demonstrated the persistence of normal tissue oxygenation monitored by NIRS values despite a prolonged perioperative cardiac arrest.
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January 2019

Early Experience with Intraoperative Leak Test Using a Blend of Methylene Blue and Indocyanine Green During Robotic Gastric Bypass Surgery.

Obes Surg 2019 03;29(3):949-952

Division of Digestive and Transplant Surgery, Department of Surgery, University Hospital Geneva, 4 Rue Gabrielle-Perret-Gentil, 1211, Geneva, Switzerland.

Introduction: Leak tests using air or methylene blue (MB) for gastrojejunal anastomoses are often performed during gastric bypass surgeries to avoid leaks due to technical errors. Still, early leaks have been reported in the literature. Indocyanine green (ICG) fluorescence with laser excitement makes this dye easily visible even in small amounts, and, thus, may be an excellent agent for leak testing.

Methods: During robotic gastric bypass surgery, a leak test of a gastrojejunal anastomosis was performed with air through a nasogastric tube under manual occlusion of the jejunum. Afterward, 50 ml of a mix of 100 ml sterile water, 2 mg of MB, and 5 mg ICG was injected through the same tube. The entire anastomosis was inspected for integrity under both fluorescent and normal light modes.

Results: Leak tests with air and the blend of MB and ICG have been performed in 95 patients from January 2017 to April 2018. No intraoperative leak test-related adverse events occurred. Zero (0%) patients had a positive leak test with air, 0 patients showed MB excretion, and an ICG leak was observed in four (4.2%) patients. No anastomotic complications, including leaks and/or strictures, were found 30 days postoperatively.

Conclusions: Leak tests using a blend of MB and ICG appear to be more sensitive for small defect detection of gastrojejunal anastomoses during robotic gastric bypass surgery. Larger datasets and research that is more stringent are needed to determine the exact clinical value of this new method.
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March 2019

CSF neopterin level as a diagnostic marker in primary central nervous system lymphoma.

Neuro Oncol 2015 Nov 25;17(11):1497-503. Epub 2015 May 25.

Neuro-oncology Department, Hospices Civils de Lyon, Hôpital Neurologique, Bron, France (A.V., F.D., L.T.-M., S.C.-C., J.H.); INSERM U1028/CNRS UMR 5292, Lyon Neuroscience Research Center, Lyon, France (A.V., F.D., Y.T., G.K.B., L.T.-M., D.M., I.Q., J.H., A.P.-L.); Université de Lyon, Université Claude-Bernard Lyon 1, Lyon, France (A.V., F.D., L.T.-M., J.H.); Neurochemistry Unit, Biochemistry Department, Hospices Civils de Lyon, Hôpital Neurologique, Bron, France (Y.T., I.Q., A.P.-L.); Department of Anesthesiology, Pharmacology and Intensive Care, Geneva University Hospitals, Geneva, Switzerland (G.K.B.); Hematology Department, Centre Léon Bérard, Lyon, France (H.G.); Neuroradiology Department, Hospices Civils de Lyon, Hôpital Neurologique, Bron, France (G.L.-T.); Neurosurgery Department B, Hospices Civils de Lyon, Hôpital Neurologique, Bron, France (E.J.); Neurosurgery Department D, Hospices Civils de Lyon, Hôpital Neurologique, Bron, France (J.G.).

Background: The diagnosis of primary central nervous system lymphoma (PCNSL) can be challenging. PCNSL lesions are frequently located deep within the brain, and performing a cerebral biopsy is not always feasible. The aim of this study was to investigate the diagnostic value of CSF neopterin, a marker of neuroinflammation, in immunocompetent patients with suspected PCNSL.

Methods: We retrospectively reviewed the characteristics of 124 patients with brain tumor (n = 82) or an inflammatory CNS disorder (n = 42) in whom CSF neopterin levels were assessed. Twenty-eight patients had PCNSL, 54 patients had another type of brain tumor (glioma n = 36, metastasis n = 13, other n = 5), and 13 patients had a pseudotumoral inflammatory brain lesion.

Results: CSF neopterin levels were significantly higher in the patients with PCNSL than in those with other brain tumors (41.8 vs 5.1 nmol/L, P < .001), those with pseudotumoral inflammatory brain lesions (41.8 vs 4.3 nmol/L, P < .001), and those with nontumefactive inflammatory CNS disorders (41.8 vs 3.8 nmol/L, P < .001). In the 95 patients with space-occupying brain lesions, at a cutoff of 10 nmol/L, the sensitivity of this approach was 96% and the specificity was 93% for the diagnosis of PCNSL. The positive and negative predictive values were 84% and 98%, respectively.

Conclusion: Assessing CSF neopterin levels in patients with a suspected brain tumor might be helpful for the positive and differential diagnosis of PCNSL. A prospective study is warranted to confirm these results.
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November 2015

Biochemical neuromonitoring of poor-grade aneurysmal subarachnoid hemorrhage: comparative analysis of metabolic events detected by cerebral microdialysis and by retrograde jugular vein catheterization.

Neurol Res 2015 Jul 10;37(7):578-87. Epub 2015 Feb 10.

Objectives: In severe aneurysmal subarachnoid hemorrhage (aSAH), pathological changes in cerebral energy metabolism can be detected either by local measurements using cerebral microdialysis (cMD) together with brain tissue oxygen probe or by global measurements of arterio-jugular difference performed with retrograde jugular vein catheter. Our main objective was to compare the two methods of detection and assess whether combining biomarkers from both procedures could improve outcome prediction, which has never been studied before.

Methods: This study included 400 sets of paired arterial and jugular venous samples and 3138 brain microdialyzates obtained from 18 poor-grade aSAH patients. Using Glasgow outcome scale (GOS), neurochemical data from unfavorable (GOS 1-3) and favorable (GOS 4-5) outcome groups were compared.

Results: The lactate/pyruvate ratio was found as the most sensitive marker for predicting unfavorable outcome (90%), although not specific. In contrast, hypoxic lactate events and those of metabolic ratio (MR) < 3.44, most frequently observed in the unfavorable outcome group than in the favorable one (13.9 vs 0.9% and 33.3 vs 3.75% respectively), were shown to be more specific biomarkers (86%) to predict unfavorable outcome, but less sensitive ( < 70%). The combination of these three biomarkers improved the accuracy of outcome prediction (sensitivity 90% and specificity 71%).

Discussion: Both retrograde jugular venous catheterization (RJVC) and cMD contribute to monitor poor-grade aSAH patients. In this preliminary study, we show that these two techniques are complementary and their combination increases the accuracy of outcome prediction.
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July 2015