PubMed HealthSearch

Biomedical subjects

R C Britton

Publications and source records attributed to R C Britton.

17 recordsLinked to original sources

Pregnancy and esophageal varices.

A review of the case histories of 53 patients with established cirrhosis who had 83 pregnancies and 38 noncirrhotic patients with varices who had 77 pregnancies suggests that conception may occur in patients with varying degrees of hepatic decompensation, that sustaining gestation to term and delivery is unlikely to overtax cirrhotic livers in patients who are able to conceive, that infertility does not necessarily follow portal decompression operations, that fatal hemorrhage from preexisting esophageal varices is not more likely to occur during gestation, that variceal hemorrhage during pregnancy is not predictable on the basis of individual history of bleeding, and that the risk of variceal bleeding is not increased during vaginal delivery. Management of the rare patient with the combination of inactive cirrhosis, portal hypertension and esophageal varices requires a high degree of individualization. The strong desire for a child must be balanced against acceptance of an indeterminate prognosis of intrinsic liver disease, the possible need to terminate pregnancy in the presence of progressive hepatic decompensation, and termination of pregnancy when the potential for fetal abnormality resulting from serious hemorrhage early in gestation is significant. Under these circumstances and with currently available methods for the control of active variceal bleeding, a nihilistic approach cannot be justified.

Esophageal and Gastric Varices

Propagation of sepsis in vascular grafts.

Clinical studies have stated that sepsis tends to remain localized at the point of origin in a patent arterial synthetic graft. We have demonstrated in the pig model that in the acute phase, infection will propagate distally in both thrombotic and patent grafts. The propagation of infection is probably intraluminal. The implication is that total graft excision is necessary for proximal suture-line sepsis in the patent synthetic graft.

Animals

The clinical effectiveness of selective portal shunts.

The use of four types of selective portal shunts designed to avoid postshunt encephalopathy has been reviewed. The incidence of hospital mortality and recurrent hemorrhage from varices among 187 reported cases have been comparable to standard portacaval shunts. The incidence of postshunt encephalopathy among 154 survivors with patent shunts followed from two to ninety-six months has averaged 8 per cent but with significant differences between the types of operation. The most effective has been the left gastric vein to vena cava shunt followed by the distal splenorenal shunt, the modified central splenorenal shunt, and the central splenorenal shunt, with success in avoiding encephalopathy in direct proportion to the number and size of postoperative collaterals between the persistently hypertensive portal system and the decompressed splenic system. The development of such collaterals inlong-term survivors, especially after the splenorenal shunts, may contribute to an incidence of late encephalopathy approaching that of nonoperative patients.

Adult