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Obstructive complications of the Nissen fundoplication.

The obstructive complications of the Nissen fundoplication can be devastating. They are much more easily prevented than treated. The technical considerations in avoiding these complications are conceptually simple. The fundoplication should be done over a large intraesophageal stent. A no. 50 or 60 French dilator is appropriate and, in addition, the fundoplication should be left loose. If the fundoplication is to be left in the chest, the hiatus must be widely enlarged so that there is not the slightest hint of obstruction at the level of the diagphragm. Care must be taken in this case to approximate stomach to diaphragm. The Nissen fundoplication should be carried out using heavy sutures with generous bites of the stomach on both sides as well as bites of the esophageal wall and perhaps also the proximal stomach. If careful attention is paid to these technical details, the obstructive complications of the Nissen fundoplication should be eliminated.

Adult↗

[Stomach torsion in swine].

Sudden death in mature sows due to torsion of abdominal organs (stomach, spleen, liver) is described. Hepatic torsion is seen only separately, but gastric torsion and torsion of spleen appear by themselves as well as in combination with each other. Often no clinical symptoms are observed. Acute cardiovascular failure is responsible for death in these sows. Authors unanimously report on feeding as a possible aetiological factor. Both the composition and technique of feeding should therefore be examined in problematic live stock. Excitement and excessive movements before and during feeding as well as the rapid intake of large amounts of water and feed seem to predispose to the development of gastric dilatation or torsion in sows. Suitable prophylactic measures should be taken.

Animals↗

The role of splenomesenteric vein anastomosis after division of the splenic vein in pancreatoduodenectomy.

Division of the splenic vein was performed in 29 patients who underwent pancreatoduodenectomy to achieve lymph node dissection and neural resection around the superior mesenteric artery. The basic protocol for the splenic vein reconstruction to reduce congestion of the spleen and stomach is as follows. When the inferior mesenteric vein (IMV) drained into the splenic vein, the confluence was preserved without reconstruction of the splenic vein. When the IMV drained into the superior mesenteric vein (SMV) or the splenomesenteric angle, the division of the IMV and spleno-IMV anastomosis were performed. In postoperative venography, nine patients showed downward flow (from the splenic vein to the IMV) and three patients showed upward flow (from the IMV to the splenic vein). Postoperative computed tomography scans showed venous dilatation and splenomegaly in the upward flow group; there were no patients in the downward flow group. In selected patients, splenic vein reconstruction is necessary to reduce congestion of the spleen and stomach. When the flow is downward, spleno-IMV flow should be preserved. When the flow is upward, spleno-SMV anastomosis is necessary instead of spleno-IMV anastomosis.

Anastomosis, Surgical↗

Effect of fundic distension on gastric acid secretion in man.

The effect of distension of the fundus and body of the stomach on gastric acid secretion was studied in 26 patients with duodenal ulcer and six healthy subjects. Graded distension produced by inflating a rubber balloon to volumes of 150, 300, and 600 ml resulted in significant sequential increments of acid output. The secretory response outlasted stimulation by at least one hour. In both groups of subjects, the highest acid output obtainable with fundic distension amounted to just above 50% of the maximum secretory response evoked by intravenous infusion of pentagastrin. A significant correlation was found between the peak secretory rates observed during fundic distension and after pentagastrin stimulation. It is concluded that distension of the oxyntic gland area in man is a potent stimulus for gastric secretion of acid and that patients with duodenal ulcer are no more sensitive to this stimulus than healthy subjects.

Adult↗

Significance of the Heineke-Mikulicz pyloroplasty in the treatment of gastric dilatation-volvulus. A prospective clinical study.

Twenty-six dogs with gastric dilatation-volvulus (GDV) were stabilized medically, followed by tube gastrostomy and gastropexy. In 13 dogs, a Heineke-Mikulicz pyloroplasty was also performed. Complications and recurrences were monitored during the immediate postoperative period and for 5 to 31 months thereafter. Barium gastrograms and contrast radiographs of the stomach were evaluated at week 1 and months 5 to 31. Significantly fewer dogs without pyloroplasty had complications during the immediate postoperative period. There were no differences in the long-term complication rates. Radiographic evaluations of the width of the pylorus, the size of the stomach, and the rate of gastric emptying showed no differences between dogs with and without pyloroplasty at any evaluation period. The Heineke-Mikulicz pyloroplasty increased the immediate postoperative complication rate after surgical fixation of the stomach for the treatment of GDV. It did not appear to influence the long-term outcome of the surgical treatment of this disease. The Heineke-Mikulicz pyloroplasty is not recommended in the treatment of GDV unless pyloric outflow obstruction can be demonstrated.

Animals↗

Aneurysm of the gastroduodenal artery associated with absence of the celiac axis: report of a case.

A 65-year-old woman was referred to us for treatment of an aneurysm, found incidentally by abdominal ultrasonography. Angiography demonstrated a saccular aneurysm of the gastroduodenal artery and absence of blood flow from the celiac axis. The blood flow in the hepatic artery, splenic artery, and other arteries originating from the celiac axis was supplied by the superior mesenteric artery through one dilated and elongated pancreaticoduodenal artery and the gastroduodenal artery. The aneurysm was resected, and the inflow and outflow arteries were reconstructed with end-to-end anastomoses. Pathologic examination of the aneurysm sac showed diffuse intimal thickening with focal atheromas. We speculate that the increased blood flow compensating for the absence of blood flow from the celiac axis was an etiologic factor predisposing to the formation of this gastroduodenal artery aneurysm.

Aged↗

Chronic mesenteric vascular insufficiency with gastric ulceration.

Four middle-aged women presented with long histories of severe progressive weight loss and chronic abdominal pain. Endoscopically atypical gastric ulcers were identified in all; the ulcers were multiple and antral in location, with irregular shapes, sloping edges, and whitish sclerotic bases, and were surrounded by mottled and erythematous mucosa containing numerous superficial erosions. They did not heal with conservative therapy. All 4 patients were found to be suffering from chronic mesenteric vascular insufficiency. Balloon dilatation of the superior mesenteric artery in one and surgical revascularization in the others resulted in progressive clinical improvement and healing of the ulcers. The striking feature in these patients with mesenteric ischemia was the finding of gastric ulcers with a morphology different from the ordinary gastric ulcer, which healed only with revascularization. Future observation of similar lesions should suggest the possible diagnosis and expedite early treatment of mesenteric insufficiency in patients with this disorder.

Dilatation↗

Nature of the bleeding vessel in recurrently bleeding gastric ulcers.

An unselected consecutive series of 826 patients admitted for acute upper gastrointestinal bleeding underwent urgent endoscopy. Peptic ulcers were found in 402 (49%). Of the 329 ulcer craters that could be fully examined, visible vessels were identified in 156 (47%), other stigmata of recent hemorrhage in 66, and no stigmata of recent hemorrhage in 107. One hundred twenty-nine patients with stigmata of recent hemorrhage (93 of whom had visible vessels) randomly allocated to no endoscopic treatment were observed for evidence of further bleeding. Fifty-four of the 93 patients (58%) with visible vessels rebled, compared with 2 of 36 (6%) with other stigmata of recent hemorrhage. No patient without stigmata of recent hemorrhage rebled. Twenty-seven patients in whom a visible vessel in a gastric ulcer was identified at endoscopy underwent urgent partial gastrectomy because of recurrent bleeding. The vessel identified at endoscopy was found in 26 of 27 resection specimens (96%). The arterial vessel wall protruded above the surface of the ulcer crater in 10 specimens, and clot in continuity with a breach in the vessel wall protruded in a further 10 specimens. Postoperative angiography, when technically possible, showed that the breached artery ran across the base of the ulcer in all of these specimens. Pathological changes were common in the bleeding artery and included arteritis in 24 of 29 (83%) eroded arteries found in these specimens, with aneurysmal dilatation in 14 of 27 (52%) bleeding points that could be fully examined. The ulcer had penetrated to serosa in 13 specimens (45%). The bleeding artery had a mean external diameter of 0.7 mm with a range of 0.1-1.8 mm. This study provides new information about the nature of the bleeding vessel in gastric ulcers, and some of this information is relevant in planning studies of endoscopic therapy for bleeding peptic ulcers. It validates the endoscopic identification of a visible vessel, and confirms that such identification has a high predictive value for the development of recurrent hemorrhage.

Arteries↗

1-Naphthol--single and repeated dose (30-day) oral toxicity studies in the mouse.

The oral toxicity of 1-naphthol in Charles River CD1 mice was investigated in single (2, 1 and 0.5 g/kg body weight) and 30-day repeat dosing (200, 100 and 50 mg/kg body weight) studies. In the single-dose study, animals dosed by oral gavage at 2 g/kg body weight either died or were killed in extremis between 15 and 90 min after dosing, and although the animals treated at 1 g/kg body weight survived to the end of the study (14 days post-dosing), one male in the 0.5 g/kg body weight dose group was killed in extremis approximately 2 hr after treatment. Acute dosing was associated with histopathological lesions seen in the kidneys and stomachs of mice from all treatment groups. The kidney lesions consisted of degeneration of the distal tubule epithelium, papillary necrosis and tubular dilatation. Gastric changes characterized by splitting of the epithelium of the forestomach and sloughing of the superficial epithelium of the glandular mucosa were generally accompanied by vascular congestion and acute inflammatory cell infiltration. In the 30-day study, mice dosed by oral gavage at 50 and 100 mg/kg body weight tolerated the treatment well, as did the female mice treated at 200 mg/kg body weight. Three male mice in the 200 mg/kg body weight group did, however, show gastric histopathological effects. Two of the mice (one killed in extremis on the fourth day of the study with the other surviving treatment) showed focal mucosal erosion, and a third (killed in extremis on the twentieth day of the study) exhibited peeling of the mucosa of the forestomach. Both of these gastric lesions were considered to be related to treatment at 200 mg/kg body weight. None of the mice in the 30-day study showed any kidney lesions or changes in haematology or clinical chemistry parameters.

Administration, Oral↗

Portal hypertension-related bleeding: management of difficult cases.

Many advances have occurred in the management of varices over the years. Guidelines based on sound evidence have been developed to manage the esophageal variceal hemorrhage. Less is known about how best to manage some of the more difficult cases of bleeding related to portal hypertension. This article reviews evidence in the hypertensive gastropathy, ectopic varices, and management of patients who are intolerant of or have not responded to beta-blocker therapy. The goal of this article is to review the sparse available evidence and to suggest reasonable management options.

Dilatation, Pathologic↗

Infectivity and pathogenicity of Cryptosporidium andersoni to a novel host, southern multimammate mouse (Mastomys coucha).

The infectivity and pathogenicity of Cryptosporidium andersoni (bovine isolate) for neonatal and adult southern multimammate mice (Mastomys coucha) was studied using transmission experiments. C. andersoni isolate used in this study was not infective for BALB/c mice, but experimental infection proved susceptibility of neonatal and adult M. coucha to the infection. The prepatent period was 20-24 days, the patent period varied between 46 and 59 days. No signs of clinical illness or macroscopic findings were detected in infected animals. Cryptosporidium developmental stages were detected only in the glandular part of the stomach of M. coucha in histological sections stained with Wolbach's modification of Giemsa and using immunofluorecence. Histopathological changes were characterized by dilatation and epithelial metaplasia of infected gastric glands without inflammatory response in the lamina propria. Neonatal M. coucha were more susceptible to C. andersoni infection than adults. M. coucha seems to be a useful laboratory model for study of C. andersoni infection.

Age Factors↗

Avoiding postoperative complications with the LAP-BAND system.

The most frequently occurring complications associated with the LAP-BAND (INAMED Health, Santa Barbara, CA) include gastric prolapse, stoma obstruction, esophageal and gastric pouch dilatation, erosion, and access port problems. This article describes the causes of these complications and details some points for their prevention and treatment. As techniques for placement of the LAP-BAND have evolved, complication rates have declined. For example, occurrence of gastric prolapse was reduced from the initially reported rates of 22% to less than 5%. The emergence of many problems, such as gastric pouch dilatation or prolapse, can be minimized with proper operative technique and close postoperative management and follow-up. As with other major surgical procedures, particularly those performed in the bariatric population, complications associated with the LAP-BAND system are unavoidable but are rarely life-threatening if managed appropriately. Surgeons and patients should adopt strategies that will help avoid complications and be sensitive to any indication of their emergence.

Dilatation↗

Parietal cell vagotomy.

Although long-term follow-up data have not been obtained, it appears that parietal cell vagotomy for the treatment of intractable duodenal ulcer is withstanding the test of time. Operative mortality and morbidity are low, as is the incidence of side effects. The majority of patients who have a recurrent ulcer improve with medical therapy, and only a minority require reoperation.

Dilatation↗

Non-surgical treatment of cardio-esophageal obstruction--role of endoscopy.

The role of fiberendoscopy with regard to various dilatatory procedures is discussed. In particular detailed information is given for dilatation of tight asymmetrical fibrous strictures, with metal olives, for dilatation of advanced achalasia and for dilatation of obstructing gastro-esophageal malignancy, followed by positioning of a plastic prosthesis under endoscopic control.

Adenocarcinoma↗