Pylorus
Mostrando 37-48 de 71 artigos, teses e dissertações.
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37. Pylorus-preserving pancreatoduodenectomy. A clinical and physiologic appraisal.
Since 1978, 252 patients from different centers in the world have undergone pylorus-preserving pancreatoduodenectomy. Fifty-five per cent of the patients had malignant tumors in the region of the head of the pancreas. The overall operative mortality rate was 2.8%. Anastomotic leakage and fistulae occurred in 19% of the patients. Pancreatic, biliary, and ente
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38. Pancreatoduodenectomy with preservation of the pylorus and gastroduodenal artery.
OBJECTIVE: The authors evaluated the rationale for and feasibility of gastroduodenal artery preservation in pylorus-preserving pancreatoduodenectomy (PPPD) for periampullary cancer in which the pancreatic remnant maintains a normal function and morphologic characteristics. SUMMARY BACKGROUND DATA: Pylorus-preserving pancreatoduodenectomy has become one of th
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39. Extrinsic and intrinsic neural control of pyloric sphincter pressure in the dog.
1. In chloralose-urethane-anaesthetized dogs a manometric assembly was inserted via a gastrostomy to monitor pyloric pressure with a sleeve sensor. Antral and duodenal contractions were monitored with both manometric side holes and serosal strain gauges. 2. Subserosal silver wire electrodes were placed in the antrum 5 cm orad and the duodenum 3 cm aborad to
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40. Delayed gastric emptying after Billroth I pylorus-preserving pancreatoduodenectomy: effect of postoperative time and cisapride.
OBJECTIVE: To study the recovery course of gastric emptying after Billroth I pylorus-preserving pancreatoduodenectomy (PPPD) and therapeutic effects of cisapride. METHODS: To examine gastric emptying, acetaminophen was given, admixed in a pasty liquid meal, to 16 patients undergoing PPPD before surgery and at 1, 3, 6, 9, and 12 months after surgery. Cisaprid
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41. Electromyographic events in the stomach and small intestine of a small kangaroo, the Tammar wallaby (Macropus eugenii).
The extracellular electrical activity of the stomach and small intestine of a macropodid marsupial was studied using chronically implanted bipolar electrodes. Recordings from the elongate, tubular, haustrated stomach showed triphasic slow waves with a frequency of 5.5/min, an amplitude of 120 microV and an aborad propagation rate of 3 mm/sec. Action potentia
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42. Duodenal bulb control of the flow rate of digesta in the fasted and fed dog.
1. Continuous measurement of the flow of digesta near the pylorus, and 5 cm aborally, was assessed in the conscious dog using a chronically implanted flowmeter. The patterns of flow were related to motor activity of the gastroduodenal junction. 2. Electromagnetic measurement of the flow was calibrated in vitro by means of a pulsatile pump. Validation was obt
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43. Mechanics of pulsatile transpyloric flow in the pig.
1. In eight conscious pigs equipped with gastric and duodenal cannulae, the relationship of transpyloric flow to gastro-duodenal motor events was evaluated during gastric emptying of 1000 ml of saline. Rates of liquid gastric emptying were correlated with pressures at the antrum, pylorus and duodenum, recorded by a sleeve sensor and multiple perfused side-ho
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44. Excitatory and inhibitory motor reflexes in the isolated guinea-pig stomach.
1. We have described and analysed the movements of the isolated stomach during distension by correlating intragastric pressure with video recordings, and investigated the presence of intrinsic inhibitory and excitatory reflexes. 2. Isolated guinea-pig stomachs, placed in an organ bath, were slowly distended with Krebs solution using a syringe pump via a cann
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45. The advantages of pylorus-preserving pancreatoduodenectomy in malignant disease of the pancreas and periampullary region.
The aim of this study was to establish whether the pylorus-preserving pancreatoduodenectomy (PPPD) is a safe and radical procedure in malignant disease of the head of the pancreas and periampullary region, without increased morbidity and mortality rates compared with the standard Whipple's procedure. During the period 1984 to 1990, a Whipple's procedure (n =
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46. Effect of leucine 13-motilin (KW5139) on early gastric stasis after pylorus-preserving pancreatoduodenectomy.
OBJECTIVE: To test a hypothesis that exogenously administered motilin would improve early gastric stasis after pylorus-preserving pancreatoduodenectomy (PPPD). SUMMARY BACKGROUND DATA: Prolonged gastric stasis is a frequent complication after PPPD. We demonstrated that this might at least in part be attributable to delayed recovery of phase III activity of t
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47. Gastroduodenal motor activity associated with gastric emptying rate in sheep.
1. Gastric emptying rate was calculated from dye dilution and was measured as the net flow over periods of 5 days through an electromagnetic probe inserted into a T-cannula, 5 cm beyond the pylorus in conscious hay-fed sheep. The net aboral flow was related to the motor activity of the antrum and duodenal bulb which was recorded via chronically fixed strain-
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48. Prospective, randomized trial on the effect of cyclic versus continuous enteral nutrition on postoperative gastric function after pylorus-preserving pancreatoduodenectomy.
OBJECTIVE: The effect of a cyclic versus a continuous enteral feeding protocol on postoperative delayed gastric emptying, start of normal diet, and hospital stay was assessed in patients undergoing pylorus-preserving pancreatoduodenectomy (PPPD). SUMMARY BACKGROUND DATA: Delayed gastric emptying occurs in approximately 30% of patients after PPPD and causes p