Reoperative procedures following liver transplantation.
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Follow-Up Studies↗
Biomedical subjects
M D Stone
Publications and source records attributed to M D Stone.
Intraoperative radiation therapy for biliary tract carcinoma: results of a 5-year experience.
The results of a 5-year experience with use of intraoperative radiation therapy (IORT) in the management of locally advanced bile duct carcinoma are presented. Fifteen patients received IORT doses between 5 and 20 Gy for localized disease, which was either primary and resected with microscopic residual (2 patients), primary and unresected (10 patients), or recurrent (3 patients). Thirteen patients also received postoperative radiation therapy. The median survival of the 12 patients with primary disease was 14 months, with disease controlled in the porta hepatis in 5 of 10 evaluable patients. The three patients with recurrent disease survived 2, 9, and 11 months. There were two operative deaths, for an operative mortality of 13%. Acute and chronic complications are reviewed. Cholangitis is the most frequent in both categories. This aggressive approach in the therapy for advanced disease has an acceptable level of morbidity and may warrant the use of IORT as part of the management of biliary tract cancer.
Acute Disease↗
Orthotopic liver transplantation managed exclusively with autologous blood.
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Adult↗
Portoazygous disconnection for bleeding esophageal varices.
Between 1971 and 1982, 20 portoazygous disconnections (modified Tanner's operation) were performed in patients with bleeding esophagogastric varices who were anatomically portosystemic shunting. Immediate control of variceal hemorrhage was achieved in all patients, although rebleeding occurred after eight operations at intervals from 2 days to 7.5 years postoperatively, requiring additional surgery at a mean interval of 2.5 years. There were eight perioperative deaths. Analysis has suggested increased mortality in patients with more severely impaired liver function according to Child's classification, and in patients who require urgent or emergent operations. There was an 80 percent incidence of major and minor complications. Portoazygous disconnection is not a satisfactory alternative to portosystemic shunting, except in a selected group of patients with intact hepatic function and with anatomic characteristics that preclude usual shunting procedures.
Adolescent↗
Budd-Chiari syndrome. Historical and clinical review with an analysis of surgical corrective procedures.
Seventeen patients who fulfilled the criteria for the Budd-Chiari syndrome (centrilobular congestion and necrosis, a defined postsinusoidal block, and rapid onset of ascites) have been analyzed in terms of cause, prognosis, and treatment. Causal factors included caval web or tumor, hepatic tumor, a hypocoagulable state, myeloproliferative disease, and veno-occlusive disease. Location of the outflow block was suprahepatic (vena cava or major hepatic veins) in 13 patients and intrahepatic in 4. In five patients, a side-to-side portacaval shunt was effective in dissipating ascites with restoration to a normal lifestyle, as were transatrial fracture of a caval web (one patient) and resection of a huge cystadenoma of the liver (one patient). A peritoneal shunt provided effective palliation in three patients.
Budd-Chiari Syndrome↗
Investigation of factors determining the optimal glucose infusion rate in total parenteral nutrition.
We have used the primed constant infusion of U-13C-glucose to study glucose metabolism during conventional total parenteral nutrition (TPN) in five postoperative surgical patients. Glucose production from nonrecycled carbon sources was suppressed to 17% of the basal level at the lowest rate of glucose infusion tested (4 mg/kg x min). Subsequent increases in glucose infusion rate had minimal effect in further suppressing glucose production. Additional nitrogen-sparing effects of glucose when glucose is infused at rates in excess of 4 mg/kg x min must therefore be derived from oxidation of the infused glucose. An increase in the infusion rate from 4 mg/kg x min to 7 mg/kg x min was associated with an increased rate of glucose oxidation, but a further increase in glucose infusion rate (9 mg/kg x min) was without significant effect on glucose oxidation. As the rate of TPN administration (glucose and amino acids) increased, both metabolic rate and RQ rose significantly. Our calculations indicate that the high RQ's observed during the highest glucose infusion rate (X = 1.13) could be attributed to the synthesis of fat from infused glucose, and that about 30% of the increase in VO2 above the basal level could also be attributed to fat synthesis. The progressive increase in the ability to clear glucose from the blood that occurred as TPN progressed was not due to an increase in the rate of oxidation of glucose; we found no correlation between glucose clearance and glucose oxidation.
Adult↗
Effect of combined modality therapy on the surgical management of locally advanced rectal carcinoma.
The treatment of locally advanced rectal carcinoma is one of the more complicated problems in the management of colorectal carcinoma. More than any other site successful treatment requires a multimodality approach as surgery alone is frequently insufficient to completely eradicate all disease. This review focuses primarily on the management of patients who present without prior treatment and discusses the role of preoperative radiation therapy as well as intraoperative radiation therapy. Although much less gratifying, patients who present after failing previous therapy may also benefit from an aggressive multimodality approach.
Carcinoma↗
The push toward generalism: a view from surgery.
Recent proposals for health care reform center on restructuring the physician workforce in favor of more "generalists." These plans are based on several assumptions that have been neither clearly argued nor proved. Despite this, each of the plans enunciated thus far dictate that primary care physicians comprise at least 50% of the nation's physician workforce. Such a mandate has enormous repercussions for medical education. This paper takes issue with several assumptions underlying these reform initiatives, particularly the assumption that primary care does not include surgery. Because of the primary nature of surgical care, the prevalence of surgical diseases, the projected shortage of physicians entering general surgery, and the fact that surgical care is most effectively and efficiently provided by general surgeons, general surgery should not be handicapped as it would under present reform proposals. We recommend that the assumptions underlying plans to restructure the nation's physician workforce be tested, and that any reform enacted be based on rational criteria linked to the projected prevalence of disease in the nation as well as a determination of which practitioners care for those diseases most effectively and efficiently. We further recommend that medical students' time in surgical activities be increased rather than decreased, that general surgeons increase their activity in medical school curricular development and teaching, and that surgeons become involved more actively in the graduate training of primary care physicians.
Family Practice↗
Intraoperative radiation therapy for carcinoma of the gallbladder.
The recognition of a high incidence of local failure following surgical management of adenocarcinoma of the gallbladder has led to the use of adjuvant radiation therapy. In order to deliver higher doses to the gallbladder bed, intraoperative radiation therapy (IORT) has been used both with and without external beam radiation. The experience to date is reviewed. Ten patients have been treated, all of whom had either gross residual or unresected disease. The median survival for the group was approximately 1 year. There were no long-term survivors. The IORT did not contribute to the overall morbidity. Because of the limited number of patients and the advanced nature of the disease, the role of IORT in the management of gallbladder carcinoma has yet to be determined. The utility of this modality will most likely reside in the treatment of minimal residual disease at the time of cholecystectomy rather than in the palliative treatment of unresectable tumors.
Adenocarcinoma↗
The renal response to exogenous parathyroid hormone in treated pseudohypoparathyroidism.
Resistance to the renal actions of parathyroid hormone (PTH) in pseudohypoparathyroidism (PsH) may be improved after treatment with vitamin D or its metabolites, but reports conflict. We have examined the renal response to infusion of 35 micrograms of 1-38 PTH in patients with PsH type I (n = 8) and PsH type II (n = 1) during treatment and related this to prevailing endogenous serum PTH and calcium levels. Nine patients with postsurgical or idiopathic hypoparathyroidism (HP) served as controls. The urinary cAMP increase (delta cAMP) was lower (p < 0.001) in the PsH type I (175 +/- 6.4 nmol/l glomerular filtrate) than in the HP group (3251 +/- 515 nmol/l glomerular filtrate). delta cAMP in the PsH type I subjects was dependent on endogenous PTH concentrations (r = -0.76; p = 0.046) and serum calcium (r = 0.74; p = 0.037). Phosphaturic responses (expressed as % decrease in TmPO4/glomerular filtration rate) were lower (p = 0.013) in the PsH type I (28.8 +/- 3.75) compared with those of the HP patients (43 +/- 3.48). The phosphaturic responses in the PsH type I patients were strongly dependent on endogenous PTH (r = 0.94; p < 0.001) and serum calcium levels (r = 0.94; p < 0.001) so that the responses of subjects with normal or low PTH levels were no different (p = 0.16) from the HP group. Renal handling of calcium and sodium in response to exogenous PTH was identical in patients with PsH (types I and II) and HP. Renal tubular reabsorption during a calcium infusion was normal in all patients with PsH. These results emphasise the importance of the modulatory effects due to associated biochemical abnormalities in PsH on the responses to exogenous PTH. They also confirm that renal handling of calcium and sodium is probably normal in treated PsH.
Adult↗
Fracture incidence in England and Wales: a study based on the population of Cardiff.
Despite the importance of fractures as an economic and health problem, and consequent interest in osteoporosis, few workers have previously attempted to define the overall incidence of fracture. This population based study was based in the Accident and Emergency Department of Cardiff Royal Infirmary and identified all patients presenting with fractures of any type. Over a single year a total of 6467 fractures were identified among the 306,600 people who live in the city of Cardiff. This gives an overall fracture incidence of 21.1/1000/year, (23.5/1000/year in males and 18.8/1000/year in females); a result very similar to those from similar work in the USA, Australia and Norway. This result is over twice the previous estimate of fracture incidence in the UK; the figure of 9/1000/year from the only equivalent study performed since the 1960s. In part, this discrepancy appears to reflect our more rigorous definition of the study population, and our improved ascertainment of minor fractures. We believe our result to offer the most accurate estimate of fracture incidence currently available for a UK population.
Adolescent↗
Pulmonary toxicity of lomustine.
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Adenocarcinoma↗