Aortoesophageal fistula due to thoracic aortic aneurysm is an uncommon cause of gastrointestinal bleeding and has an extremely poor prognosis. In the English literature, we found only 27 successfully managed cases of primary aortoesophageal fistula due to thoracic aortic aneurysm. We present a case of 74-year-old man who experienced the erosion of a thoracoabdominal aortic aneurysm into the esophagus. We successfully performed resection and replacement of the thoracoabdominal aorta with a cryopreserved allograft and total thoracic esophagectomy. A few months later, the esophagus was reconstructed with orthotopic colonic interposition. The patient recovered well and resumed a normal life (12 months' follow-up).
The effect of fibre level in protein-free diets on the recovery and amino acid composition of endogenous protein collected from the ileum in pigs was studied. Although the Heal nitrogen excretion increased slightly with dietary fibre level, no significant difference was observed on the amino acid recovery between diets containing 30, 60,90 or 120 g wood cellulose per kg.
A comparison was made between the Heal digestibility of the amino acids in pigs obtained by the use of a basal diet, the apparent Heal digestibility obtained with a semi-synthetic diet where peas were the sole protein source and the true Heal digestibility obtained with synthetic and nitrogen-free diets.
A comparison was made between the rate of passage of digesta through the digestive tract of pigs with an ileo-rectal anastomosis (IRA) or an Heal T-cannula according to the single marker dose method by using polyethylene glycol (PEG) as liquid marker, Cr2O3 as solid phase marker and Yb2O3-mordantedcell walls as fibre marker. The rate of passage was slightly faster with IRA than with cannulated pigs.
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