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Biomedical subjects

A R Hatfield

Publications and source records attributed to A R Hatfield.

At least 37 records · Page 2Linked to original sources
PubMed1989

Endoscopic endoprosthesis insertion following failure of cholecystojejunostomy in pancreatic carcinoma.

Sixteen patients in whom malignant biliary obstruction recurred after failure of cholecystojejunostomy had attempted relief of obstruction by endoscopic insertion of an endoprosthesis. This treatment was successful in 13 patients, although one required percutaneous insertion because of duodenal distortion and one required a combined percutaneous-endoscopic approach. Median survival after stenting was 3.5 months (range from 2 weeks to 16 months). Of the three treatment failures, two patients had external drainage only and one succumbed before further treatment could be attempted. There were two complications associated with the procedure (one small bile leak and one episode of cholangitis) but the 30-day mortality rate of 12.5 per cent was related to disease progression rather than the procedure. Endoscopic stent insertion may achieve further worthwhile palliation of jaundice after the failure of surgery to relieve malignant biliary obstruction.

Adenocarcinoma↗
PubMed1989

Endoscopic management of inoperable cholangiocarcinoma using iridium-192.

We report a well tolerated endoscopic technique of administering intraluminal radiotherapy to 14 patients with inoperable cholangiocarcinoma, in which the iridium-192 wire source was inserted down a nasobiliary catheter placed within a previously inserted endoscopic biliary prosthesis, thus allowing bile flow to continue during treatment. Radiotherapy was commenced 2 weeks after biliary decompression, when the median serum bilirubin level had fallen from 213 to 34 mumol/l. A total radiation dose of 6000 cGy at 0.5 cm from the source was administered over a median of 85 h (range 77-116 h). In four patients there was a transient increase in serum bilirubin during iridium treatment and, in two cases (14 per cent), this was associated with mild cholangitis. Both cases resolved rapidly once the iridium wire and nasobiliary catheter were removed. The median hospital stay after treatment was 2.5 days (range 0-28 days). The late complications associated with stent blockage were minimized by routinely changing stents at 4-6 monthly intervals; ten of the patients have so far undergone from one to five (median three) stent changes. Five patients have died at 3.6-8.2 months (median 4.8 months) following iridium treatment; four had extensive type III hilar lesions at diagnosis. Nine patients are still alive at 5.4-31.0 months (median 16.4 months). The overall median survival after iridium therapy is 10.5 months. This technique of endoscopic biliary decompression before internal iridium administration minimizes complications by allowing biliary drainage during treatment. The role of this treatment in patients with inoperable cholangiocarcinoma awaits the results of randomized, controlled trials.

Adenoma, Bile Duct↗
PubMed1989

Endoscopic biliary therapy using the combined percutaneous and endoscopic technique.

Between September 1985 and December 1987, 74 patients underwent attempted endoscopic biliary therapy using a combined percutaneous transhepatic and endoscopic transpapillary approach (combined procedure). All patients had had failed endoscopy-alone procedures and had contraindications to surgery. The indication was palliation of malignant biliary obstruction in 66 cases (41 common bile duct, 25 hilar), assistance with sphincterotomy for the removal of common bile duct stones in 6 cases, and management of benign biliary stenosis in 2 cases. The initial procedure was percutaneous transhepatic access to the biliary tree, which was successful in all but 1 case (99%). The bile duct was drained externally for an average of 3.4 days before the combined procedure. One patient died during this period from hemorrhage associated with liver puncture. Combined procedure was performed in 72 cases and was successful in 60 [53 malignant stricture (53/66 = 80%), five common duct stone (5/6 = 83%), two benign stricture (2/2 = 100%)]. Procedure-related morbidity and mortality, respectively, were 12.5% and 0% for benign disease and 36% and 3% for malignant disease. The total (initial endoscopy included) morbidity and 30-day mortality were 33% and 0%, respectively, for benign disease and 62% and 27% for malignant disease. Subsequently, stent change has been required on 16 occasions, with endoscopy-only successful in 13 (81%) and repeat combined procedure being required in three (19%). The combined procedure improves the ability of endoscopy to offer nonsurgical therapy to poor risk patients with both malignant and benign biliary disease but is associated with significant morbidity and disease-related mortality.

Bile Duct Neoplasms↗
PubMed1989

A comparison of right versus left hepatic duct endoprosthesis insertion in malignant hilar biliary obstruction.

Endoscopic endoprosthesis insertion plays an increasingly important role in the palliation of jaundice in patients with unresectable malignant hilar biliary obstruction (HBO). Drainage of both obstructed lobes in Types II and III HBO is not necessary to achieve adequate palliation, providing 25% of the liver volume is drained by a single endoprosthesis. The anatomy of the main hepatic ducts suggests some benefit may accrue from preferential drainage of the left hepatic duct. We have reviewed a consecutive series of 151 patients with Type II and III HBO over a 4-year period to compare the outcome of endoprosthesis placement in either the right (RHD) or left (LHD) hepatic duct, to test this hypothesis. No significant difference was found in terms of successful drainage, complications, 30-day mortality, number of endoprosthesis changes and survival between patients with right system drainage compared with those with left sided drainage (chi 2-test and Mann Whitney U test). When dealing with a patient with a Type II or III HBO, we would recommend single endoscopic endoprosthesis insertion into the technically most accessible obstructed system. This would achieve adequate palliation in 84% of the patients.

Adenoma, Bile Duct↗
PubMed1989

Is duodenal diverticulum a risk factor for sphincterotomy?

It is uncertain whether ERCP and associated procedures are more difficult when the papilla is inside or adjacent to a duodenal diverticulum. We have therefore reviewed the data from 2458 consecutive, prospectively reported ERCPs between November 1983 and March 1988. Three hundred and eight patients (12.5%) had periampullary diverticula and in 21 the papilla was located deep within the diverticulum of whom 227 had undergone endoscopic sphincterotomy (73.7%). Comparison was made with the 2150 patients without diverticula of whom 1223 (56.9%) had undergone sphincterotomy. The success rate of specific duct cannulation was 94.2% in the diverticulum group and 96.7% in those without diverticula (p less than 0.05). The overall success rate of endoscopic sphincterotomy was 95.2% in the diverticulum group, as compared with 98.0% in those without diverticula (p less than 0.05). The procedure related morbidity and mortality of sphincterotomy were 5.2%/0.9% and 4.0%/0.7% respectively (NS). If only those who had successful cholangiography were included there was no difference in sphincterotomy success between those with and without diverticula. The group of patients with papilla deep within diverticula had a slightly higher failure rate of pure endoscopic sphincterotomy (11.8% v 5.7%: NS) but did not have a higher complication rate. In the subgroup of patients with choledocholithiasis, duct clearance of stones was as successful after sphincterotomy in those with diverticula as in those without. Medium term complications (mean 26 months) occurred in 1.4% of patients with diverticula and in 0.7% of patients without diverticula. We conclude that diagnostic cholangiography is more difficult when the papilla is closely associated with a diverticulum but that if diagnostic cholangiography is obtained, sphincterotomy may be performed as successfully and as safely in those with or without diverticula.

Adult↗
PubMed1987

Randomised trial of endoscopic versus percutaneous stent insertion in malignant obstructive jaundice.

Patients with biliary obstruction due to malignant disease, and judged unfit for open operation, were randomised to have a biliary stent inserted either endoscopically via the papilla of Vater or percutaneously. Analysis after 75 patients had been entered showed that the endoscopic method had a significantly higher success rate for relief of jaundice (81% versus 61%, p = 0.017) and a significantly lower 30-day mortality (15% versus 33%, p = 0.016). The higher mortality after percutaneous stents was due to complications associated with liver puncture (haemorrhage and bile leaks). When stenting is indicated in elderly and frail patients the endoscopic method should be tried first.

Aged↗
PubMed1985

Disproportionate steatorrhoea in alcohol-induced calcific pancreatitis.

The pancreatograms, as assessed by endoscopic retrograde cholangiopancreatography, of 51 patients with alcohol-induced calcific pancreatitis (AICP), were compared after division of the patients into three groups according to their insufficiency patterns. The first group, consisting of 18 patients, was labelled as having 'disproportionate steatorrhoea' characterized either by overt steatorrhoea and mild or no diabetes or by mild steatorrhoea and a normal glucose tolerance test result. The second group of 15 patients had severe diabetes associated with overt, mild or no steatorrhoea and constituted the 'insufficiency' group. The third group consisted of 18 patients with little or no pancreatic insufficiency. Twelve of the 18 patients with disproportionate steatorrhoea had a proximal complete or incomplete obstruction of their main pancreatic ducts, compared with 3 out of 15 in the insufficiency group and 4 out of 18 in the group with little or no pancreatic insufficiency. In this study an increased incidence of complete or incomplete obstruction (P less than 0,002) was found in the patients with disproportionate steatorrhoea compared with the other two groups. This suggests that obstruction to pancreatic flow may account for the dominant clinical presentation of steatorrhoea in some patients with AICP.

Alcoholism↗
PubMed1985

Percutaneous transhepatic assistance for duodenoscopic sphincterotomy.

Duodenoscopic sphincterotomy is an established method for dealing with common bile duct stones and papillary stenosis. Occasionally even an experienced operator is unable to carry out a sphincterotomy, for instance in the presence of large peri-papillary diverticula or Billroth II gastrectomy. Most of these patients will be offered surgery--a few will refuse or be unfit for operation. One further therapeutic option is a combined approach involving a radiologist and endoscopist, in which percutaneous transhepatic insertion of a guide wire through the papilla, with or without balloon dilatation, is used to facilitate insertion of the sphincterotome by the endoscopist. This has been done successfully in 10 of 11 patients attempted, without significant complication.

Aged↗
PubMed1984

Structure and function in noncalcific pancreatitis.

A group of 47 carefully assessed patients with noncalcific pancreatitis was studied with ERCP and the secretin pancreozymin pancreatic function test (PFT). A simple scoring system was constructed for each of the PFT indices to create a PFT score for each patient and four grades of ERCP abnormality were documented, from minimal to gross. A simple pancreatic pain score was constructed to allow for the inclusion of patients with classical pancreatic pain in the absence of acute attacks associated with an elevated serum amylase. In general there was a correlation between the degree of structural change and functional impairment, with patients with the worst pancreatic function having the grossest ERCP changes. ERCP was abnormal in 45 of the 47 patients (96%) and the PFT in 34 of the 47 (72%). However, there were some marked discrepancies between the two methods, in particular two patients with normal function in the presence of gross structural changes. ERCP proved to be the more sensitive diagnostic technique than the PFT in this group of patients.

Adolescent↗
PubMed1982

Preoperative external biliary drainage in obstructive jaundice. A prospective controlled clinical trial.

57 patients with obstructive jaundice were randomly allocated to surgery with preoperative external biliary drainage (29 patients) and without preoperative external biliary drainage (28 patients). 22 patients ultimately underwent laparotomy after a mean of 11.7 days of drainage and 25 had surgery without preoperative drainage. The postoperative complication rate was low and similar in both groups but complications associated with the drainage procedure were substantial. Perioperative mortality was 4/28 (14%) in the drainage group and 4/27 (15%) in the non-drainage group. There seems to be no advantage associated with routine preoperative external biliary drainage before surgery for obstructive jaundice.

Acute Kidney Injury↗
PubMed1981

Pre-operative biliary drainage in patients with obstructive jaundice. A comparison of the percutaneous transhepatic and endoscopic transpapillary routes.

Pre-operative biliary drainage may reduce the mortality and morbidity associated with surgery in the patient with obstructive jaundice. It is possible to drain the bile duct via two routes pre-operatively The transhepatic route was used in 12 patients and the papillary route in 8. Only 1 patients died in the postoperative period. Transhepatic drainage was found suitable for routine use in patients with a dilated biliary tree, in particular in those with unresponsive cholangitis. Transpapillary drainage is not suitable for routine use but has a place in short-term drainage in patients with mild jaundice and cholangitis caused by gallstones in the bile duct.

Bile↗
PubMed1976

Assessment of endoscopic retrograde cholangio-pancreatography (ERCP) and pure pancreatic juice cytology in patients with pancreatic disease.

Pure pancreatic juice has been collected from 61 patients at the time of endoscopic retrograde cholangio-pancreatography (ERCP) for the purpose of cytodiagnosis. The ERCP and cytological findings are discussed. Pure pancreatic juice cytology may help in the interpretation of the pancreatogram in both pancreatitis and pancreatic carcinoma. In patients with pancreatic carcinoma, ERCP alone was diagnostic in 65%, cytology alone in 54%. By combining these two approaches, a diagnostic result was obtained in 92% of patients.

Age Factors↗