An 18-year-old male with a history of surgery to correct partial drainage of the pulmonary veins had been experiencing symptoms of superior vena cava syndrome (SVCS) for 2 years. Severe obstruction of the superior vena cava where it joined the right atrium became evident upon cardiac catheterization. Because the catheter could not be inserted into the atrium, angioplasty was ruled out and surgery was scheduled. Surgery was performed with the patient in Fowler's position. Electrocardiographic signals, oxygen saturation (pulse oximetry), temperature, bispectral index, diuresis, and invasive arterial pressure were monitored. A large vein was catheterized in the left foot, and a central venous catheter was inserted through the right femoral vein. Balanced anesthesia without nitrous oxide was provided, and a right axillary artery-inferior vena cava cardiopulmonary bypass was established. Once the defect was repaired, central venous pressure became normal and edema in the upper thoracic region decreased. Anesthesia for surgical correction of SVCS carries considerable risk related to such events as difficult intubation and ventilation, bleeding, and vessel collapse. Extreme precautions must be taken and certain procedures followed in order to avoid life-threatening complications.
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Shock
January 2025
Pharmacology, University of Vermont, Burlington, VT.
Objective: Loss of function of the phospholipid scramblase (PLS) TMEM16F results in Scott Syndrome, a hereditary bleeding disorder generally attributed to intrinsic platelet dysfunction. The role of TMEM16F in endothelial cells, however, is not well understood. We sought to test the hypothesis that endothelial TMEM16F contributes to hemostasis by measuring bleeding time and venous clotting in endothelial-specific knockout (ECKO) mice.
View Article and Find Full Text PDFCirculation
January 2025
Department of Angiology, University Hospital Zurich, University of Zurich, Switzerland.
Background: In patients with post-thrombotic syndrome (PTS), stent recanalization of iliofemoral veins or the inferior vena cava can restore venous patency and improve functional outcomes. The risk of stent thrombosis is particularly increased during the first 6 months after intervention. The ARIVA trial tested whether daily aspirin 100 mg plus rivaroxaban 20 mg is superior to rivaroxaban 20 mg alone to prevent stent thrombosis within 6 months after stent placement for PTS.
View Article and Find Full Text PDFSurg Radiol Anat
January 2025
Department of Radiology, International University of Health and Welfare Narita Hospital, 852 Hatakeda, Narita, 286-8520, Chiba, Japan.
Purpose: We present the case of a rare extrahepatic portocaval shunt that resulted in communication of the portal vein and the inferior vena cava (IVC) at the level between two right renal veins that was incidentally diagnosed with contrast-enhanced computed tomography (CECT) in an asymptomatic patient.
Methods: A woman in her sixties with abdominal pain and diarrhea of unclear origin underwent exploratory abdominal CECT.
Results: The CECT incidentally revealed an extrahepatic portocaval shunt, whereby a vessel arising from the portal vein superior to the confluence of the superior mesenteric and splenic veins drained into the posterior aspect of the IVC between two right renal veins.
Int Angiol
December 2024
Department of Vascular Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China -
Background: This study aimed to investigate the clinical outcomes of percutaneous transluminal angioplasty (PTA) in patients undergoing hemodialysis with different types of superior vena cava obstruction (SVCO) lesions.
Methods: This retrospective observational study recruited patients undergoing hemodialysis with SVCO and analyzed the clinical characteristics of SVCO. Patency rates were collected for patients treated with PTA and were assessed using the t-test, U-test, log-rank test and survival analyses such as the Kaplan-Meier method.
Eur Heart J Case Rep
January 2025
Department of Cardiology, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-Ku, Yokohama city, Kanagawa 236-0004, Japan.
Background: Coronary sinus (CS) lead placement in persistent left superior vena cava (PLSVC) cases is challenging because of the poor backup force of the guiding catheter within the enlarged CS. Active fixation Quadripolar leads (Attain Stability™ Quad 4798, Medtronic) can expand choice to CS branches with limited access; however, no cases of anchoring to the main body of the CS have been published to date.
Case Summary: We describe a case of cardiac resynchronization therapy pacemaker upgrade in a 79-year-old female who developed pacing-induced cardiomyopathy after pacemaker implantation via the right superior vena cava (SVC) for atrioventricular block eight years ago wherein PLSVC was revealed during the procedure.
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