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Biomedical subjects

K Rolles

Publications and source records attributed to K Rolles.

At least 127 records · Page 7Linked to original sources

Hepatic transplantation with perioperative and long term anticoagulation as treatment for Budd-Chiari syndrome.

Conventional medical and surgical management of Budd-Chiari syndrome is often unsuccessful. In this communication, we report the results of 19 hepatic transplants done for 17 patients suffering from Budd-Chiari syndrome. The first patient who had a transplant did not receive anticoagulant therapy during the postoperative period, and recurrent thrombosis of the hepatic veins in the newly transplanted liver rapidly developed. Sixteen patients who subsequently underwent transplantation were managed using a philosophy of early postoperative anticoagulant treatment when feasible. Using this approach, the cumulative proportion of patients surviving at one and three years was 88 per cent, and no recurrent hepatic vein thrombosis occurred during a mean follow-up period of 28.2 months. Forty-four per cent of the patients who were deliberately given anticoagulant medication experienced a hemorrhagic complication in the postoperative period, but there were no associated deaths. In spite of anticoagulant therapy, 31 per cent of the patients on anticoagulantion medication experienced a thrombotic complication that did not involve the hepatic veins; one early and one late death resulted, and a third patient required urgent retransplantation. Despite the difficulties in patient management, a carefully selected population of patients with hepatic failure secondary to Budd-Chiari syndrome appear to be well served by hepatic transplantation with early postoperative and long term anticoagulant therapy.

Adolescent↗

Hepatic transplantation in Europe. First Report of the European Liver Transplant Registry.

At the 32 European centres where livers are transplanted the actuarial survival rate for 1218 patients was 44% at 1 year and 41% at 2 years. Perioperative mortality (30 days) was 30%. Recipients aged under 15 years had a higher survival rate than those aged over 15; the differences were 22% at 1 year and 32% at 2 years. For the 97 patients who received two or more liver grafts, actuarial survival was 27.7% at 1 and 2 years. Two-thirds of the transplantations were done since 1984. Since then the best results have been obtained for biliary atresia (88 cases; survival rates at 30 days, 1 year, and 2 years were 87%, 74%, and 68%). Primary biliary cirrhosis was the commonest benign indication for transplantation, with survival of 64% at 1 and 2 years. The proportion of transplantations that were done for patients with hepatocellular carcinoma was smaller after than before 1984; among transplantations done in adults after 1984, those done because of hepatocellular carcinoma gave the best perioperative survival rate (76%) but the worst 2 year survival (30.8%).

Actuarial Analysis↗

Reversal of severe neurological manifestations of Wilson's disease following orthotopic liver transplantation.

Experience with liver transplantation for patients with Wilson's disease who have major neurological impairment is limited, and this report describes the results obtained in two such patients. The first was a 30-year-old man with a 14-month history of hepatic and neurological impairment. In spite of treatment with d-penicillamine, he developed increasing dysarthria, dysphagia, akinesia and rigidity of all four limbs, and required continuous nursing care. Following transplantation, liver function was almost normal from four weeks onwards, but recovery of neurological function was much slower and was not seen until two to three months after surgery. By four months he was sufficiently mobile to be discharged, and when he returned for assessment at eight months, no abnormal neurological signs were detectable. The second patient was a 27-year-old woman with worsening liver dysfunction for eight years; one year previously she had developed dysarthria, akinesia, a fine tremor and moderate rigidity of all limbs as well as marked psychological impairment. There was no improvement on treatment with d-penicillamine or trientine, but as liver function returned to normal two months after liver grafting, her neurological and psychological function began to improve so that by three months she could be discharged.

Adult↗

Current results with orthotopic liver grafting in Cambridge/King's College Hospital series.

In the 12 months from 1 August 1983 to 31 July 1984, 29 orthotopic liver transplant operations were performed in 26 patients, 10 of whom were aged 20 or under. Results in this younger age group were very satisfactory, nine of the patients being alive at review, giving an actuarial predicted one year survival of 75%. In the older age group seven of the 16 patients were alive, perioperative bleeding and infection in association with malnutrition being major factors in the nine who died. Two patients in whom a blocked portal vein required disobliteration at the time of the operation made excellent recoveries. An increase in availability of donor organs made possible a greater use of retransplantation, and for the first time transplantation for severe liver failure due to subacute hepatic necrosis was successful.

Adolescent↗

Primary hyperoxaluria (type I): attempted treatment by combined hepatic and renal transplantation.

A case is reported of a patient with renal failure and developing systemic and renal oxalosis due to pyridoxine-resistant type I primary hyperoxaluria. In spite of vigorous haemodialysis and hydration before and after operation, an allografted cadaveric kidney failed because of oxalate deposits in the transplant. The patient was treated by combined hepatic and renal transplantation. The liver allograft functioned well but the kidney had poor function due to primary acute tubular necrosis aggravated by steroid-associated acute pancreatitis, systemic cytomegalovirus infection and high cyclosporin A levels. The patient died from generalised cytomegalovirus infection. The early course after operation was associated with a reduced rate of oxalate production, which would slow the rate of oxalate deposition in the tissues. The size of the oxalate metabolic pool was also diminished. These observations are compatible with the grafted liver having corrected the metabolic lesion.

Child↗

Preservation of ischemically injured canine kidneys by retrograde oxygen persufflation.

Canine kidneys were briefly perfused with Ross and Marshall's hypertonic citrate solution and stored at O C. This study concerns the effect, during such storage, of insufflating various gases via the renal vein and allowing the gas to escape through needle perforations of the renal surface. We were able to confirm the finding of Ross and Escott that kidneys that have suffered 30 min of warm ischemia prior to preservation, will, if oxygen is so "persufflated" during 24 hr storage, provide life-supporting function when subsequently auto-grafted. Moreover, we were able to extend the preservation period to 48 hr after 30 min warm ischemia, and to achieve 24-hr preservation after 60 min of warm ischemia. Oxygen was essential: our results suggest that air is less effective than pure oxygen, and we found inert gases to be completely ineffective. Uniformly high oxygen tensions were measured throughout the kidneys during storage, but we were unable to demonstrate any resynthesis of adenosine triphosphate and adenosine diphosphate. The mechanism responsible for the effectiveness of retrograde oxygen persufflation remains obscure.

Animals↗