Bowel Obstruction Flashcards Preview

Colorectal Surgery > Bowel Obstruction > Flashcards

Flashcards in Bowel Obstruction Deck (17):
1

What are the 3 types of bowel obstruction?

Simple
closed loop obstruction
strangulated

2

What is a simple bowel obstruction?

1 point obstructed - no vascular compromise

3

What is a closed loop bowel obstruction?

two obstructing points - high risk of distention and perf

4

What is a strangulated bowel obstruction?

a bowel obstruction with 1 obstruction point + vascular compromise

5

What can occur within the lumen to cause a bowel obstruction?

Meconium
Faeces
foreign bodies
gallstone ileus
insusseption

6

What can happen in the bowel wall to cause obstruction?

Neoplasia
Inflammation
Trauma

7

What can happen outside the bowel wall o cause obstruction?

Volvulus
Adhesions
hernias

8

What are the non-mechanical causes of bowel obstruction?

paralytic
post-surgical ileus

9

What is oglivie's syndrome?

a pseudo-obstruction where AXR looks like obstruction

10

What are the 2 most common causes of small bowel obstruction?

adhesions
hernia

11

What are the 3 most common causes of large bowel obstruction?

Neoplasia
Diverticulitis
Volvulus

12

What is the most common site of large bowel perforation?

caecum

13

What are the 4 clinical features of bowel obstruction?

Pain - central and colicky
Constipation
Vomiting
Distension

14

How will auscultation compare in smal bowel obstruction vs Large bowel obstruction?

SBO - tinkling
LBO - No BS

15

What investigations will be done in a patient with a bowel obstruction?

Cultures
Bloods:
- ABG
- FBC, CRP, UEs
Imaging
- Erect CXR, AXR
Enema with gastrographin

16

How would you treat a patient with a bowel obstruction?

Analgesia
Drip + Suck
Gastrographin (NG)

17

Why would gastrographin via NG be used to treated bowel obstruction?

to irritate bowel and stimulate peristalsis