INTRODUCTION Decreases in oxygen saturation (SO2) and lactate concentration [Lac] from superior vena cava (SVC) to pulmonary artery have been reported. These gradients (Delta SO2 and Delta[Lac]) are probably created by diluting SVC blood with blood of lower SO2 and [Lac]. We tested the hypothesis that Delta SO2 and Delta[Lac] result from mixing SVC and inferior vena cava (IVC) blood streams. ...

The determination of CD4 cells is of crucial clinical importance for patients with AIDS. However, the high costs involved represent limitations for CD4 cell counting in developing countries. In order to provide an affordable technique, we introduced a simplified volumetric counting (SVC) technique without sample manipulations and investigated it in a multicentre study. Blood samples from 434 he...

AIMS The benefits of superior vena cava (SVC) resection for lung cancer remain controversial. Data obtained in four international centers were analyzed in order to identify prognostic factors and thus guide in future patient selection. MATERIALS AND METHODS Retrospective study. Prognostic factors were examined by logistic regression for postoperative morbidity/mortality using the Kaplan-Meier...

INTRODUCTION Induction of general anesthesia in patients with superior vena cava (SVC) syndrome may cause airway obstruction and cardiovascular collapse. CASE PRESENTATION Herein, we introduced a patient with the diagnosis of dissecting aneurysm of the ascending aorta who was candidate for emergency surgery. He also had symptoms of SVC syndrome. To maintain airway patency during anesthetic ma...

The flow patterns emerging at a catheter migrating close to the simulated superior vena cava (SVC) wall has been investigated for jet to cross stream velocity ratios of 3 and 6 experimentally. As the catheter moves close to the SVC wall, changes in the jet behavior can potentially cause health problems to the patient. In this study, time-averaged velocity, vorticity, and Reynolds stress correla...

This paper presents graphic-based simulation and optimal PI controller design of a static var compensator (SVC) using MATLAB’s SIMULINK. Utilization of MATLAB software simplifies problem solving complexity and also reduces working time. In this paper, an optimal PI controller design using genetic algorithms for the SVC was demonstrated. From which satisfactory controller design results, tests a...

The use of pacemakers and central venous catheters (CVC) has become commonplace in the field of medicine. In the past, superior vena cava (SVC) syndrome was almost always associated with malignant occlusion of the SVC. However, with the increased use of pacemakers and implantable cardioverter-defibrillators (ICDs) almost 30% of all cases are related to the use of intravascular devices today. We...

Superior vena cava (SVC) syndrome is an unusual complication of pacemaker and implantable cardioverter-defibrillator implantation. It is believed to be due to SVC thrombosis with or without stenosis induced by endothelial disruption from repeated mechanical trauma by the leads. A 58-year-old man presented with gradual swelling of his face, neck, and upper extremities of 10 days duration. A pace...

We report a case of locally advanced excavated non-small cell lung cancer with superior vena cava (SVC) syndrome that underwent four cycles of induction chemotherapy. Due to early treatment failure and the impossibility applying radical radiotherapy, a decision was made to perform surgery. The patient underwent right intrapericardial pneumonectomy with en-bloc resection of the SVC, azygos vein ...