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| 2. |
- Arnbjornsson, E.
(författare)
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Acute appendicitis related to faecal stasis
- 1985
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Ingår i: Annales Chirurgiae et Gynaecologiae. - 0355-9521. ; 74:2, s. 90-93
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Tidskriftsartikel (refereegranskat)abstract
- The objectives of the study presented here were to evaluate the role of faecal stasis in the development of acute appendicitis. Inquiries about bowel habits were made of 188 patients admitted to this Department of Surgery with a clinical diagnosis of acute appendicitis, and of 188 healthy volunteers without known gastrointestinal disease, matched for age and sex. The results show that the number of bowel actions per week were significantly lower in the group of patients with acute appendicitis. Furthermore, the patients with a gangrenous and perforated appendix found at had has significantly fewer bowel actions per week than those with phlegmonous appendicitis. These findings support the hypothesis of the importance of the obstruction of the appendix lumen in the development of acute appendicitis.
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| 3. |
- Arnbjornsson, E.
(författare)
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Acute appendicitis risk in various phases of the menstrual cycle
- 1983
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Ingår i: Acta Chirurgica Scandinavica. - 0001-5482. ; 149:6, s. 603-605
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Tidskriftsartikel (refereegranskat)abstract
- The significantly different age-specific incidence of acute appendicitis between males and females in the second, third and fourth decades of life led to a study of the frequency of acute appendicitis and the degree of appendiceal inflammation found at operation in the different phases of the menstrual cycle. The frequency of acute appendicitis was almost twice as high in the luteal phase as in the other half of the menstrual cycle. The proportion of gangrenous, perforated or normal appendices was significantly higher in the menstrual and follicular phases of the cycle. The study indicated that the female sex hormones may play an important etiologic part in acute appendicitis or may influence the inflammatory process in the appendix.
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| 4. |
- Arnbjornsson, E., et al.
(författare)
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Decreasing incidence of acute appendicitis, with special reference to the consumption of dietary fiber
- 1982
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Ingår i: Acta Chirurgica Scandinavica. - 0001-5482. ; 148:5, s. 461-464
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Tidskriftsartikel (refereegranskat)abstract
- The incidence of acute appendicitis and the total number of appendectomies performed in the adult population admitted to our medical center are both decreasing. The cause is not clear. Better nutrition and the wide-spread use of antibiotics are two possible factors which come to mind, but we know of no scientific evidence that these are responsible. There has been a slight decrease in the mean dietary fiber content in the Swedish diet during the last three decades. The decreased incidence of acute appendicitis cannot therefore be correlated with an increase in the mean dietary fiber intake.
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| 5. |
- Arnbjornsson, E., et al.
(författare)
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Effect of loperamide on faecal control after rectoplasty for high imperforate anus
- 1986
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Ingår i: Acta Chirurgica Scandinavica. - 0001-5482. ; 152:3, s. 215-216
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Tidskriftsartikel (refereegranskat)abstract
- The effect of loperamide on faecal control after Stephens rectoplasty for high imperforate anus was studied in eight patients more than 8 years after surgery. Clinical assessment and anorectal manometry were performed before and after administration of loperamide for 6 to 8 weeks. Decreased faecal soiling was noted in seven of the eight cases. Obstipation forced two patients to stop the medication. The improved faecal control was verified by an increase in sequeeze pressure at anorectal manometry in four patients. When incontinence persists after Stephens rectoplasty, loperamide can improve the faecal control in some cases.
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| 6. |
- Arnbjornsson, E.
(författare)
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Etiological factors in acute appendicitis, an experimental study using the human appendix transplant
- 1987
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Ingår i: Surgical Research Communications. - 0882-9233. ; 1:4, s. 289-291
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Tidskriftsartikel (refereegranskat)abstract
- In an experimental model using the human appendix transplanted into the Rowett rat, the role of obstruction in the pathogenesis of acute appendicitis was studied. Nine animals were anaesthetized and underwent laparotomy. Normal human appendices, removed during routine surgery, were transplanted into the rats. The appendices were obstructed by a balloon catheter introduced through the open end. Pressure inside the obstructed appendices was measured with a balloon at the tip of the catheter. The anaesthesia was continued and pressures were registered regularly up to six hours afterwards. The animals were then sacrificed. At autopsy the appendix was studied and evidence of obstruction, distention and inflammatory changes, both gross and microscopic, was registered.
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| 7. |
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| 8. |
- Arnbjornsson, E., et al.
(författare)
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Obstruction of the appendix lumen in relation to pathogenesis of acute appendicitis
- 1983
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Ingår i: Acta Chirurgica Scandinavica. - 0001-5482. ; 149:8, s. 789-791
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Tidskriftsartikel (refereegranskat)abstract
- The role of obstruction in the pathogenesis of acute appendicitis was studied by measuring the pressure in the appendix peroperatively in 33 patients undergoing appendectomy because of suspected acute appendicitis. The technique involved insertion of a fine needle via the apex into the lumen of the appendix and measurement of the hydrostatic pressure required to inject a saline solution. In all six patients with gangrenous appendix and in two patients with phlegmonous appendix there were signs of obstruction of the appendix lumen expressed as raised intraluminal pressure. In 19 patients found at operation to have phlegmonous appendix there were no signs of obstruction. The experimental data suggest that obstruction is not an important factor in the causation of acute appendicitis, but may develop as a result of the inflammatory process.
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| 9. |
- Arnbjornsson, E., et al.
(författare)
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Reply
- 2000
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Ingår i: Journal of Pediatric Surgery. - 0022-3468. ; 35:5, s. 810-810
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Tidskriftsartikel (refereegranskat)
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| 10. |
- Arnbjornsson, E.
(författare)
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Scoring system for computer-aided diagnosis of acute appendicitis. The value of prospective versus retrospective studies
- 1985
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Ingår i: Annales Chirurgiae et Gynaecologiae. - 0355-9521. ; 74:4, s. 159-166
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Tidskriftsartikel (refereegranskat)abstract
- The high negative exploration rate in patients with suspected acute appendicitis is the main compelling reason to improve the accuracy in managing patients with acute abdominal pain. In this article, data from a prospective study on a group of patients undergoing acute appendectomy were used to devise a scoring system for the purpose of differentiating between the patients with an acute appendicitis and those found to have a normal appendix at operation. The results show that by using the scoring system described, 30% of the unnecessary appendectomies could have been avoided. These findings show the potential value of this method. The results of the prospective study were compared with the results of a retrospective study on the same group of patients demonstrating a significant difference and hence the unreliability of retrospective studies.
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