Intraabdominal Infections Flashcards Preview

Clinical Pathology > Intraabdominal Infections > Flashcards

Flashcards in Intraabdominal Infections Deck (30):
1

What is the definition of intraabdominal infections

Presence of microorganisms in normally sterile sites within the abdominal cavity

2

What types of bacteria do you find in the stomach

Considered to be sterile

3

What types of bacteria do you find in the prox. small intestine

Relatively free of microorganisms. Growth inhibited by bile. A few aerobic bacteria and candida

4

How many organisms/gram do you find in the large intestine?

10(9)-10(11)

5

Is the large intestine pred. covered with aerobic or anaerobic bacteria?

Anaerobic bacteria (95-99%)

6

3 mechanisms of intra-abdominal infection

1.translocation of micro-organisms from GI tract lumen to peritoneal cavitye.g. intraperitoneal infections
2.transolcation of micro-organisms across a lumen e.g. biliary tract/hepatobiliary infections
3.translocations of microorganims from an extra-intestinal source e.g. penetrating trauma, haematogenous spread

7

Give 3 examples of when you can get translocation across a wall

Performation e.g. appendix
Loss of integrity e..g strangulation, ischaemia
Surgery e.g. seeding at operation, anastomotic leak

8

Give 2 examples of when you can get translocation across a lumen

Blockage e.g. cholecystitis
Iatrogenic e.g. instrumentation

9

Outine the 3 stages of perforated appendix

1.stagnation of luminal contents, bacterial growth and recruitment of inflammatory cells
2.build up of intraluminal pressure
3.escape of luminal contents into peritoneal cavity

10

Inflammation of the gall bladder wall, associated iwth obstruction of the cystic duct e.g. gallstones, malignancy, surgery

Cholecytitis

11

Clinical presentation of cholecystitis

Fever, right upper quadrant pain, mild jaundice

12

Intramural gas in gall bladder wall

Emphysematous cholecystitis

13

Complication of cholecystitis- pus in the gall bladder

Empyema of the gall bladder

14

Which differences are there in the clinical presentations of cholecystitis and empyema of the gall bladder

Same presenations but empyema in addition presents with severe pain, high fever, chills and rigors

15

Inflammation.infection of biliary tree

Cholangitis

16

Collection of pus in the lvier

Pyogenic liver abscess

17

Localised area of peritonitis with build up of pus

Intraperitoneal abscess

18

Presentation of intraperitoneal abscess

non specific. Sweating, anorexia or pyrexia

19

What type of intraperitoneal abscess presents with pain in shoulder on affected side, persistent hiccup, intercostal tenderness, apparent hepatomegaly and ipsilateral lung collapse with pelural effusion

Subphrenic abscess

20

What type of intraperitoneal abscess presents with urinary frequency, tenesmus (bowel frequency)

Pelvic abscess

21

Infected ascitic fluid

Spontaneous bacterial peritonitis

22

Amoebic abscess is caused by what parasite

Entamoeba histolytica

23

Hyatid cyst is caused by what bacteria

Echinoccocus granulosus

24

Give 2 examples of aerobic gram -ve bacilli

Enterobacteriaceae/coliforms e.g. E.coli
Pseudomonas

25

Give 1 example of an anaerobic gram -ve bacilli

Bacteroides

26

Give 1 example of an aerobic gram +ve cocci

Enterococcus

27

Give 1 example of an anerobic gram +ove bacilli

Clostridium

28

Liver abscesses are commonly caused by what bacteria?

Usually polymicrobial

29

What antibiotics are given to people with intraperitoneal infections

65yrs: piperacillin/tazobactam

30

When do you switch to oral antibiotics?

After 48hrs apyrexial with normal white cell count