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Inferior mesenteric artery arteriovenous malformation, a rare cause of ischemic colitis: A case report.
Medicine (Baltimore)
March 2023
Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
Rationale: An arteriovenous malformation (AVM) is an abnormal tangle of blood vessels that connects the arteries and the veins. Because normal capillary bed is partially or completely absented in the AVM, the blood passes quickly from the arteries to the veins, which disrupts normal blood flow and oxygen supply to the surrounding tissues. This is called "steal phenomenon," and in the inferior mesenteric artery (IMA) territory, this may lead to abdominal pain, gastrointestinal bleeding, portal hypertension, and even ischemic colitis.
View Article and Find Full Text PDFGreater omentum may be the problem, not part of the solution: vascular steal phenomenon.
Br J Surg
January 2023
Department of Upper Gastrointestinal Surgery, Bankstown-Lidcombe Hospital, Bankstown, New South Wales, Australia.
Do Natural Portosystemic Shunts Need to Be Compulsorily Ligated in Living Donor Liver Transplantation?
J Clin Exp Hepatol
April 2021
Centre for Liver and Biliary Sciences, Max Super Speciality Hospital, 1, Press Enclave Road, Saket, New Delhi, 110017, India.
Article Synopsis
- Different transplant centers have varying practices for ligating natural portosystemic shunts during liver transplants to avoid complications like portal steal phenomenon, but clear guidelines are lacking.
- A study involving 89 cirrhotic patients revealed no significant differences in early graft dysfunction or portal venous complications between those who underwent shunt ligation and those who didn't, despite more overall complications in the non-ligated group.
- The findings suggest that shunt ligation might not be essential in living donor liver transplants if there is sufficient portal flow and good graft quality.
Objective Assessment of Physiologic Alterations Associated With Hemodynamically Significant Patent Ductus Arteriosus in Extremely Premature Neonates.
Front Pediatr
February 2021
Division of Neonatology, Department of Pediatrics, Kentucky Children's Hospital, University of Kentucky, Lexington, KY, United States.
Delay in closure of ductus arteriosus in postnatal life may lead to serious consequences and complications in an extremely premature neonate secondary to hemodynamic alterations in regional blood flow pattern in various organs. Despite the widespread recognition amongst neonatologists to identify a hemodynamically significant patent ductus arteriosus (hsPDA) early in the postnatal course, there is lack of consensus in its definition and thus the threshold to initiate treatment. Echocardiographic assessment of PDA shunt size and volume combined with neonatologists' impression of clinical significance is most frequently used to determine the need for treatment of PDA.
View Article and Find Full Text PDFA Single-Center Experience in Portal Flow Augmentation in Liver Transplantation With Prior Large Spontaneous Splenorenal Shunt.
Transplant Proc
April 2021
Akdeniz University, Faculty of Medicine, Department of General Surgery, Tuncer Karpuzoglu Organ Transplantation Center, Antalya, Turkey.
Large portosystemic shunts may cause portal steal syndrome in liver transplantation (LT). Because of the possible devastating consequences of the syndrome, the authors recommend perioperative management of these large shunts. Fourteen adult recipients who underwent portal flow augmentation, including left renal vein ligation (LRVL), renoportal anastomosis (RPA), shunt ligation (SL), and splenic vein ligation (SVL) for large spontaneous splenorenal shunt (SSRS), are included in this study, and the results were analyzed.
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