A new generation endovascular graft for repair of abdominal aortic aneurysms.

Background: Several endovascular grafts are currently being evaluated for repair of abdominal aortic aneurysms (AAA). The goals of our study were twofold. First was to develop a new endovascular graft with several advantages over previous devices: (1) smaller size (16 fr), (2) recapturability (the device can be partially deployed and then recaptured and moved to a new location or entirely removed if needed), and (3) accuracy and ease of placement.

Effects of dietary fish oil on biliary phospholipids and prostaglandin synthesis in the cholesterol-fed prairie dog.

Cholesterol gallstone formation in the prairie dog is accompanied by an increase in the percentage of biliary phospholipids containing arachidonic acid, and an increase in gallbladder prostaglandin (PG) synthesis, but the pathogenetic significance of these changes is unclear. Dietary supplementation with eicosapentaenoic acid (EPA), an omega-3 fatty acid which is commonly found in fish oil, decreases prostaglandin synthesis in some tissues by replacing arachidonic acid, and by competitively inhibiting prostaglandin synthesis. We studied the effect of dietary fish oil on gallbladder PG synthesis, and the relative abundance of various molecular species of phosphatidylcholines and phosphatidylethanolamines in bile and gallbladder epithelium in the cholesterol-fed prairie dog.

Effect of dietary cholesterol on phosphatidylcholines and phosphatidylethanolamines in bile and gallbladder mucosa in the prairie dog.

Humans with cholesterol gallstones have been reported to have alterations in the molecular species of phospholipids in bile. Both decreases in phospholipids with linoleic acid and increases in those with arachidonic acid have been found. The purpose of this study was to investigate the effect of a lithogenic diet (0.

Can ventilation-perfusion scans accurately diagnose acute pulmonary embolism?

To examine the accuracy of ventilation-perfusion (V/Q) scanning, we retrospectively reviewed pulmonary angiograms and V/Q scans from 150 patients clinically suspected of having pulmonary embolism. Pulmonary emboli were documented by angiography in 56 patients (37%). In seven patients V/Q scans were interpreted as being normal and these seven patients were angiographically negative for emboli.