Vitor Mendes

Dr. Vitor Mendes

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 October 2020 in Perfusion
Verified
Journal Article
Closed access
PDF file
VMVitor Mendes
Vitor Mendes
SCSébastien Colombier
Sébastien Colombier
FVFrançois Verdy
François Verdy
XBXavier Bechtold
Xavier Bechtold
PSPierre Schlaepfer
Pierre Schlaepfer
MKMatthias Kirsch
Matthias Kirsch
Background: Peri-operative coagulation management of patients receiving apixaban, a new oral anticoagulant, is difficult. The CytoSorb® hemoadsorption device might represent a therapeutic option to reduce apixaban’s pharmacological and inflammatory effects during high-risk surgery. Case presentation: An 83-year-old woman treated with Apixaban underwent emergent redo mitral valve replacement for prosthetic valve endocarditis. A CytoSorb® cartridge was added to the cardio-pulmonary bypass (CPB) circuit. Apixaban-specific anti-factor Xa activity (AFXaA) were measured peri-operatively. After 100 minutes of CPB, a 50% AFXaA rate decrease was observed as compared to pre-CPB values. Furthermore, we noticed 39% and 44% reductions of AFXaA levels in comparison to the expected levels in patients with normal or altered renal function, respectively. Conclusion: Insertion of a CytoSorb® cartridge in the CPB was safe and associated with rapid correction of Apixaban-associated anticoagulation.

1 June 2023
Verified
Book Chapter
Closed access
Paul AbrahamPaul Abraham
Paul Abraham
VMVitor Mendes
Vitor Mendes
MKMatthias Kirsch
Matthias Kirsch
ASAntoine Schneider
Antoine Schneider
Extracorporeal circulation (ECC) such as cardiopulmonary bypass or extracorporeal membrane oxygenation (ECMO) may induce a complex activation of the i

1 January 2016 in Arquivos Brasileiros de Cardiologia
Verified
Journal Article
Closed access
VMVitor Mendes
Vitor Mendes
Telmo PereiraTelmo Pereira
Telmo Pereira
VMVítor Azevedo Matos
Vítor Azevedo Matos

6 April 2024 in Journal of Cardiothoracic Surgery
Verified
Journal Article
Open access
PDF file
VMVitor Mendes
Vitor Mendes
JMJaid Mamode
Jaid Mamode
JJJalal Jolou
Jalal Jolou
MMMourad Malki
Mourad Malki
CEChristoph Ellenberger
Christoph Ellenberger
CHChristoph Huber
Christoph Huber
Background: The management of hemostasis in patients medicated with apixaban (Eliquis) undergoing emergency cardiac surgery is exceedingly difficult. The body’s natural elimination pathways for apixaban prove ineffective in emergency situations, and the impact of hemodialysis is limited. The application of Cytosorb® may attenuate the concentration of apixaban, thereby facilitating the stabilization of these patients. Case presentation: An 84-year-old man treated with apixaban, underwent emergency ascending aorta replacement surgery due to an acute type A aortic dissection. To address the challenges induced by apixaban, we integrated Cytosorb® cartridge into the Cardiopulmonary bypass circuit. There was a 63.7% decrease in perioperative apixaban-specific anti-factor Xa activity. The patient’s postoperative course was favourable. Conclusion: Hemoadsorption with Cytosorb® may offers a safe and feasible approach for reducing apixaban concentration in emergency cardiac surgery, thereby mitigating the risk of hemorrhagic complications.

28 May 2025 in Journal of Cardiothoracic Surgery
Verified
Journal Article
Open access
PDF file
VMVitor Mendes
Vitor Mendes
AMAbdelkhalek Mouloudi
Abdelkhalek Mouloudi
JJJalal Jolou
Jalal Jolou
TNTomasz Nalecz
Tomasz Nalecz
AAAna Abecasis
Ana Abecasis
TSTornike Sologashvili
Tornike Sologashvili
The optimal surgical approach for right ventricular outflow tract obstruction in Tetralogy of Fallot aims to preserve the native pulmonary valve annulus, as this is associated with better long-term outcomes. Pediatric humanitarian patients often present with a delayed diagnosis and lack access to preoperative palliative treatments, reducing the likelihood of pulmonary valve annulus preservation and potentially compromising long-term outcomes. This study aims to identify independent predictors of successful pulmonary valve-sparing repair in pediatric humanitarian patients undergoing corrective surgery for Tetralogy of Fallot. Between January 2019 and May 2023, pediatric humanitarian patients with Tetralogy of Fallot underwent surgical correction at our center. We performed a comparative analysis of preoperative, intraoperative, and postoperative variables, followed by univariate and multivariate logistic regression to identify independent predictors of pulmonary valve-sparing repair. A lower body mass index (OR = 0.711; p = 0.021; 95% CI = 0.533–0.949), a larger pulmonary valve annulus measured in centimeters (OR = 28.653; p = 0.008; 95% CI = 2.360-347.890) and a higher Z-score of pulmonary valve annulus (OR = 1.606; p = 0.023; 95% CI = 1.067–2.418) were identified as independent predictors of pulmonary valve-sparing repair. Successful pulmonary valve-sparing repair was associated with lower BMI and a larger pulmonary valve annulus (both measurements in centimeters and Z-score). These findings may help guide clinical and policy strategies to promote more equitable and effective surgical care in resource-limited settings.

2 March 2026 in Journal of Cardiothoracic Surgery
Verified
Journal Article
Open access
VMVitor Mendes
Vitor Mendes
AMAbdelkhalek Mouloudi
Abdelkhalek Mouloudi
JJJalal Jolou
Jalal Jolou
TNTomasz Nalecz
Tomasz Nalecz
AAAna Abecasis
Ana Abecasis
TSTornike Sologashvili
Tornike Sologashvili
Background: Pulmonary valve-sparing repair in Tetralogy of Fallot is associated with better long-term outcomes, but its feasibility remains uncertain in pediatric humanitarian patients, who often present late, with complex anatomy and comorbidities. Objective: To develop a simple and interpretable decision tree model to predict the likelihood of pulmonary valve-sparing repair based on preoperative data in a humanitarian pediatric cohort. Methods: A post-hoc classification and regression tree analysis was conducted on 115 pediatric humanitarian patients with Tetralogy of Fallot who underwent surgical correction at our center, between 2019 and 2023. Predictor variables included demographic, anthropometric, and anatomical parameters. Results: The model achieved an overall accuracy of 80.0%, with a sensitivity of 88.2% and specificity of 56.7%. The pulmonary valve annulus diameter (> 0.855 cm) was the primary discriminator for pulmonary valve-sparing repair. Conclusion: A simple decision tree model using preoperative anatomical variables may support surgical planning in humanitarian contexts. Its interpretability and high sensitivity suggest potential value as a preoperative triage and planning aid.