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ORIGINAL ARTICLE Table of Contents   
Year : 2010  |  Volume : 16  |  Issue : 4  |  Page : 272-274
Pattern of acute intestinal obstruction: Is There a change in the underlying etiology?


Department of Surgery, Liaquat University of Medical & Health Sciences, Jamshoro, Pakistan

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Date of Submission01-Oct-2009
Date of Acceptance07-Jan-2010
Date of Web Publication24-Sep-2010
 

   Abstract 

Background/Aim: To study the changing pattern of acute intestinal obstruction at a teaching institute. Patients and Methods: It is a prospective descriptive study conducted at a teaching hospital during the period from June 2004 to June 2009. All patients with clinical or radiological evidence of acute intestinal obstruction were included in this study regardless of the gender of the patient. Patients below the age of 10 years were excluded from the study. The treatment strategy was planned ranging from conservative treatment to emergency laparotomy after resuscitation and rehydration of the patient. Details of individual patients were recorded on a pro forma sheet and data analyzed statistically on SPSS version 14. Results: A total of 229 patients with acute intestinal obstruction were admitted and treated. The mean age of the study population was 43.08 ± 13.07 years. Postoperative adhesions accounted for 41% (n= 95) of the total cases, followed by abdominal tuberculosis (25%, n= 58), obstructed/ strangulated hernias of different types (18%, n= 42). There was an obvious change in the pattern of etiology of acute intestinal obstruction as the common causes were postoperative adhesions and abdominal tuberculosis instead of obstructed inguinal hernias. Conclusion: An increase in the adhesive obstruction and a concomitant decrease in the incidence of obstructed hernias indicate a changing trend towards early operation before it gets complicated. Abdominal tuberculosis is emerging as another common cause of acute bowel obstruction.

Keywords: Acute intestinal obstruction, adhesions, etiology, obstructed/strangulated hernias

How to cite this article:
Malik AM, Shah M, Pathan R, Sufi K. Pattern of acute intestinal obstruction: Is There a change in the underlying etiology?. Saudi J Gastroenterol 2010;16:272-4

How to cite this URL:
Malik AM, Shah M, Pathan R, Sufi K. Pattern of acute intestinal obstruction: Is There a change in the underlying etiology?. Saudi J Gastroenterol [serial online] 2010 [cited 2019 Nov 12];16:272-4. Available from: http://www.saudijgastro.com/text.asp?2010/16/4/272/70613


Acute intestinal obstruction is a common surgical emergency globally with high morbidity and mortality. [1],[2],[3],[4],[5] The most common underlying cause of acute bowel obstruction in the West has always been postoperative adhesions as suggested by many reports. [6],[7],[8] A number of studies conducted in our part of the world had found obstructed/ - strangulated hernias to be the most common underlying cause of acute intestinal obstruction. [9],[10] This was attributed to a general reluctance for surgery due to unawareness, poverty and fear. During the last few years, a change in the etiology of acute intestinal obstruction has been noted in the developing countries. [11],[12],[13],[14],[15],[16]


   Patients and Methods Top


A prospective study of 229 patients, presenting with acute intestinal obstruction, admitted and treated at a teaching hospital over a period of five years from 2004 to 2009, was undertaken. All patients with radiological and clinical evidence of acute bowel obstruction admitted and treated in a surgical unit were included in this study regardless of the gender of the patients. However, patients below the age of 10 years and those with incarcerated and irreducible hernia and paralytic ileus were excluded from the study. All patients were admitted through casualty department and were received by two of the co-authors in the ward. Upon arrival of the patients in the ward, an immediate fluid and electrolyte resuscitation was started on every patient, and necessary investigations were done before surgery. Patients with previous laparotomy were initially put on conservative management comprising of nasogastric decompression, fluid and electrolyte correction by intravenous route and broad-spectrum antibiotics. Failure of relief of obstruction on this conservative treatment for more than 48 hours was followed by laparotomy. Patients with clinical suspicion and previous history of tuberculosis were also initially kept on conservative regime. The data collection was started by two of the co-authors immediately upon arrival of the patient in the ward.

The variables studied included demographic details, time between onset of symptoms and arrival in ward, symptoms and signs, imaging studies, initial resuscitation, type of treatment offered, operative findings, cause of obstruction and eventual outcome of the treatment offered. The data were collected on a pro forma sheet of individual patient and statistically analyzed using Statistical package for social sciences (SPSS, version 14.0; Chicago, IL, USA).

The ethical committee approval was not needed for this particular study.


   Results Top


A total 229 patients with a mean age of 43.08 years (Std of 13.069) and a range of 13-74 presented with classical acute bowel obstruction during a period of five years and were included in this study. Males constituted 74% (n= 170) of the study population; and females, 26% (n= 59). Site of obstruction was found to be in the small bowel in a vast majority (85%) of the study population; while in 35 (15%) patients, the site of obstruction was in the large bowel. The most common features on presentation included distension of the abdomen (87%), vomiting (73%), absolute constipation (88%), dehydration (67%) and pain in abdomen (75%). In majority of the patients, there was a substantial delay in admission to the hospital from the time of development of the symptoms, as shown in [Table 1]. Preliminary investigations included complete blood picture, plain x-ray abdomen (erect and supine films), ultrasound of abdomen, serum electrolytes and urea. There were multiple air-fluid levels on plain x-ray films in 87% of the patients. We found concomitant pulmonary tuberculosis in 2 patients who presented with acute intestinal obstruction due to abdominal tuberculosis. Patients with adhesive obstruction and suspected abdominal tuberculosis were given a trial of conservative treatment for 48 to 72 hours. Of these, 76% responded with complete recovery, but the remaining 34% needed exploration due to worsening condition. Overall 192 patients were operated, and the various underlying causes of obstruction discovered in relation to the site of obstruction are shown in [Table 2]. There was a surprisingly high proportion of adhesive obstruction followed by tuberculosis of abdomen. This is contrary to the results obtained a couple of decades back in the same setting, when obstructed hernias were the most common cause of acute bowel obstruction. Depending upon the underlying cause of the obstruction, various treatment modalities were adopted, ranging from conservative measures to resuscitation followed by laparotomy and resection anastomosis wherever indicated. Of the total number of patients, 200 recovered completely while 3 patients developed fecal fistula, 15 patients developed wound infection and 3 patients developed wound dehiscence. There was an overall mortality of 3.49%. Mortality was high in patients who were brought too late to our hospital (P < 0.001) after the onset of the symptoms, as shown in [Table 3].
Table 1 :Duration of symptoms


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Table 2 :Underlying cause and site of obstruction


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Table 3 :Outcome of treatment in relation to duration of symptoms


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   Discussion Top


Acute intestinal obstruction is one of the common life-threatening emergencies all over the world. [1],[17],[18],[19] There is a global change in the spectrum of etiology of acute intestinal obstruction over the past few years. A number of recent studies have found adhesive obstruction to be replacing obstructive hernias as the most common cause. [20],[21],[22] This study is done to explore a similar change in the spectrum of acute intestinal obstruction in our part of the developing world, comparing the pattern of etiology at present with results obtained in the past. The pattern of presentation in our study is consistent with that in the reports of many similar studies, and the same is true for the sex distribution. [23],[24],[25],[26] The mean age of 43.08 years in our study is also consistent with age incidence in many similar reports. [12],[26],[27] The most common underlying cause of obstruction in this study is found to be adhesive obstruction. This is contrary to the earlier results in our region, when obstructed inguinal hernia was the commonest cause of acute intestinal obstruction. [9],[26] It was believed that patients were reluctant for elective surgery of hernias due to poverty, lack of education, and general fear of surgery. This led to a large number of hernias presenting as obstructed/ strangulated bowel obstruction. A growing knowledge about hernias and rising fear of likely complications are probably the reasons for an increasing number of hernias repaired electively. There is also a parallel increase in the number of laparotomies, and this has raised the incidence of adhesive obstruction in our institute. Maximum numbers of patients with adhesive obstruction (60%, n= 57) in our study had a history of appendectomy and other abdominal operations during the last six months to one year. Similar results are also described by many authors who have conducted similar trials. [12],[27] All patients with adhesive obstruction were initially given a trial of conservative treatment, and this approach is recommended and adopted by many other authors in their trials. [28],[29],[30] A total of 76% of patients of adhesive obstruction responded with complete recovery in our study.

Another important and increasingly common cause of acute bowel obstruction is found to be abdominal tuberculosis. Our results show a total of 55 (24%) patients of abdominal tuberculosis presenting as acute intestinal obstruction. This observation is comparable to that in many similar local studies in our country and in neighboring countries. [31]

There is an overall mortality of 3.49%, which is found directly related to the delay between onset of obstructive symptoms and arrival at our hospital (P < 0.001). This delayed presentation increases morbidity and mortality many-folds, as is evident from our results.

In conclusion, we have found that adhesions are becoming an ever increasing underlying cause of bowel obstruction. A trend of elective hernia surgery has reduced the number of patients of hernias presenting with obstruction of bowel. Acute bowel obstruction due to abdominal tuberculosis is becoming a common occurrence in our region.

 
   References Top

1.Osuigwe AN, Anyanwu. Acute intestinal obstruction in Nnewi Nigeria: A five year review. Nigerian J Surg Res 2002;4:107-11.  Back to cited text no. 1      
2.Ohene-Yeboah M, Adippah E, Gyasi-Sarpong K. Acute intestinal obstruction in adults in Kumasi, Ghana. Ghana Med J 2006;40:50-4.  Back to cited text no. 2      
3.McConkey SJ. Case series of acute abdominal surgery in rural Sierra Leon. World J Surg 2002;26:509-13.   Back to cited text no. 3      
4.Wilson MS, Ellis H, Menzies D, Moran BJ, Parker MC, Thompson JN. A review of the management of small bowel obstruction. Ann R Coll Surg Engl 1999;81:320-8.  Back to cited text no. 4      
5.Miller G, Boman J, Shrier I, Gordon PH. Natural history of patients with adhesive small bowel obstruction. Br J Surg 2000;87:1240-7.  Back to cited text no. 5      
6.Pickleman J. Small bowel obstruction In: Zinner MJ ed. Maingot's Abdominal Operations.10 th edn. London: Prentice Hall; 1997. p. 1159-72.  Back to cited text no. 6      
7.Stewardson RH, Bombeck CT, Nyhus LM. Critical operative management of small bowel obstruction. Ann Surg 1978;187:189-93.  Back to cited text no. 7      
8.Ihedioha U, Alani A, Modak P, Chong P, O'Dwyer PJ. Hernias are the most common cause of strangulation in patients presenting with small bowel obstruction. Hernia 2006;10:338-40.  Back to cited text no. 8      
9.Memon AS, Memon JM, Malik A, Soomro AG. Pattern of acute intestinal obstruction. Pak J Surg 1995;11:91-3.  Back to cited text no. 9      
10.Kφssi J, Salminen P, Laato M. The epidemiology and treatment patterns of post-operative adhesions induced intestinal obstruction in Varsinais-suomi Hospital District. Scand J Surg 2004;93:68-72.  Back to cited text no. 10      
11.Lawal OO, Olayinka OS, Bankole JO. Spectrum of causes of intestinal obstruction in adult Nigerian patients. S Afr J Surg 2005;43:34-6.  Back to cited text no. 11      
12.Adesunkanmi AR, Agbakwuru EA. Changing pattern of acute intestinal obstruction in tropical African population. East Afr Med J 1996;11:727-30.  Back to cited text no. 12      
13.Naaeder SB, Archampong EQ. Changing pattern of acute intestinal obstruction in Accra. West Afr J Med 1993;12:82-8.  Back to cited text no. 13      
14.Archampong EQ, Naaeder SB, Darko R. Changing pattern of intestinal obstruction in Accra,Ghana. Hepatogastroenterology 2000;47:185-93.  Back to cited text no. 14      
15.Chen XZ, Wei T, Jiang K, Yang K, Zhang B, Chen ZX, et al. Etiological factors and mortality of acute intestinal obstruction: a review of 705 cases. Zhong Xi Yi Jie He Xue Bao 2008;6:1010-6.  Back to cited text no. 15      
16.Ismail, Khan M, Shah A, Ali N. Pattern of dynamic intestinal obstruction in adults. J Postgrad Med Inst 2005;19:157-61.  Back to cited text no. 16      
17.McEntee G, Pender D, Mulvin D, McCullough M, Naeeder S, Farah S, et al.Current spectrum of intestinal obstruction. Br J Surg 2005;74:976-80.  Back to cited text no. 17      
18.Menzies D, Parker M, Hoare R, Knight A. Small boission.wel obstruction due to postoperative adhesions: treatment patterns and associated costs in 110 hospital admissions. Ann R Coll Surg Engl 2001;83:40-6.  Back to cited text no. 18      
19.Madziga AG, Nuhu AI. Causes and treatment outcome of mechanical bowel obstruction in north eastern Nigeria. West Afr J Med 2008;27:101-5.  Back to cited text no. 19      
20.Tamijmarane A, Chandra S, Smile SR. Clinical aspects of adhesive intestinal obstruction. Trop Gastroenterol 2000;21:141-3.  Back to cited text no. 20      
21.Oladele AO, Akinkuolie AA, Agbakwuru EA. Pattern of intestinal obstruction in a semi urban Nigerian hospital. Niger J Clin Pract 2008;11:347-50.  Back to cited text no. 21      
22.Markogiannakis H, Messaris E, Dardamanis D, Pararas N, Tzertzemelis D, Giannopoulos P, et al. Acute mechanical bowel obstruction: Clinical presentation, etiology, management and outcome. World J Gastroenterol 2007;13:423-37.  Back to cited text no. 22      
23.Kuremu RT, Jumbi G. Adhesive intestinal obstruction. East Afr Med J 2006;83:333-6.   Back to cited text no. 23      
24.Zubaidi A, Al-Saif F, Silverman R. Adult intussusception: a reterospective review. Dis Colon Rectum 2006;49:1546-51.  Back to cited text no. 24      
25.Malik K, Ahmed W. Pattern of intestinal obstruction at Jinnah Postgraduate Medical Centre Karachi. J Coll Physicians Surg Pak 1991;1:32-5.  Back to cited text no. 25      
26.Perea Garcνa J, Turιgano Fuentes T, Quijada Garcνa B, Trujillo A, Cereceda P, Dνaz Zorita B, et al. Adhesive small bowel obstruction: Predictive value of oral contrast administration on the need for surgery. Rev Esp Enferm Dig 2004;96:191-200.  Back to cited text no. 26      
27.Foster NM, McGory ML, Zingmond DS, Ko CY. Small bowel obstruction; a population-based appraisal. J Am Coll Surg 2006;203:170-6.  Back to cited text no. 27      
28.Williams SB, Greenspon J, Young HA, Orkin BA. Small bowel Obstruction: Conservative versus surgical management. Dis Colon Rectum 2005;48:1140-6.   Back to cited text no. 28      
29.Mehmood Z, Aziz A, Iqbal M, Sattar I, Khan A. Causes of intestinal obstruction: A study of 257 patients. J Surg Pak 2005;10:17-9.  Back to cited text no. 29      
30.Zahra T, Sultan N. Prevalance of intestinal tuberculosis amongst cases of bowel obstruction. Pak J Surg 2004;20:82-5.  Back to cited text no. 30      
31.Sharma MP, Bhatia V. Abdominal tuberculosis. Indian J Med Res 2004;120;305-15.  Back to cited text no. 31      

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Correspondence Address:
Arshad M Malik
Department of Surgery, Liaquat University of Medical and Health Sciences, Jamshoro
Pakistan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1319-3767.70613

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    Tables

  [Table 1], [Table 2], [Table 3]

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