Intestinal Obstruction Flashcards

1
Q

In which group of population do we commonly see duodenal atresia?

A

Triosomy 21

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2
Q

What is the common clinical presentation of duodenal atresia?

A

Billous vomitting without abdominal distension

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3
Q

What is the key radiological feature of duodenal atresia?

A

Double bubble sign

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4
Q

If you see double bubble sign, and you find gas distally in the rectum, what would be your differential?

A

Stenosis instead of atresia

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5
Q

What is the non-operative management of duodenal atresia?

A

NPO, NGT, IVF.

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6
Q

What are the other abnormalities that are commonly seen with duodenal atresia?

A

Congenital heart defect - kidney - anorectal malformation.

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7
Q

What is the surgery of choice for duodenal atresia?

A

Duodeno-duodenostomy

Diamond shaped anastomosis

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8
Q

What are the alternatives for duodeno-duodenostomy?

A

Duodeno-jejunostomy
Side to side duodeno-duodenostomy
Tapering duosenoplasty

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9
Q

Triple bubble in x-ray abdomen appearance indicate the presence of

A

Jejunoileal atresia

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10
Q

What is the characteristic signs of jujenoileal atresia?

A

Passage of gray plugs of mucus in the rectum + villous vomitting + jaundice + abdominal distension

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11
Q

Differentiate between bowel distention in duodenal atresia and in meconium ileus

A

Meconium ileus occur before even swalloing air.

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12
Q

What is a risk factor for jejunoileal atresia?

A

Polyhydraminos

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13
Q

What are the types of jejunoileal atresia?

A
1- stenosis 
2- type 1 
2- type 2
3- type 3a
4- type 3b 
5- type 4
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14
Q

Describe the lesion in type 1 jejunoileal atresia?

A

Bowel is in continuity, but membrane is causing the obstruction

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15
Q

Describe the lesion in type 2 jejunoileal atresia?

A

Intact mesentry + bowel connected by fibrous band

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16
Q

Describe the lesion in type 3a jejunoileal atresia?

A

V shape mesentry

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17
Q

What makes type 3b difficult to manage?

A

Because it’s supplied by one single artery

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18
Q

What could be a complication of treating jejunoileal atresia?

A

Short bowel syndrome

19
Q

Where do we see the apple core appearance sign?

A

In type 3b jejunoileal atresia

20
Q

Describe the lesion in type 4 jejunoileal atresia?

A

Sausage like lesion

21
Q

How does meconium ileus usually present

A
  • distension
  • visible loops
  • doughy abdomen
  • maternal polyhydaminos
22
Q

When you diagnose meconium ileus in patient, your must test for:

A

Cystic fibrosis

23
Q

What is the pathophysiology of meconium ileus?

A

Dysfunction in exocrine-eccrine function.

Loss production of mucus and meconium clogs the bowel.

24
Q

In which disease do you expect to see soap bubble appearance?

A

In meconium ileus

25
What are the radiological signs to see in meconium ileus?
- thickening - disparity in the diameter of bowel. [some dilated some are collapsed] - ground glass\soap bubble appearance
26
Meconium ileus develops in;
Intrauterine.
27
What is the role of contrast enema in meconium ileus?
Both diagnostic (can rule out atresia) and theraputic.
28
What special precautions should be taken in meconium ileus?
- cover w\Ab to prevent translocated bacteria - hydrate patient - ensure that there’s an attending surgeon to operate in case of perforations
29
How do they do the procedure of contrast enema in meconium ileus?
1- insert catheter from rectum then inject enema. 2- inject N-acetylcystine to dissolve meconium 3- place it for 1-3 days in irregate
30
Treatment in Meconium Ileus in usually:
Non-operative Gastrografin (isotonic water-soluble contrast enema) & 1% N-acetylecysteine
31
Define Meconium Plug Syndrome
Failure to pass meconium with first 24 hours, Maternal gestational diabetes:
32
Treatment of Meconium Plug Syndrome:
Non-operative Contrast enema is diagnostic and therapeutic
33
Non-bilious projectile vomiting and epigastric mass (olive sign):
Hypertrophic Pyloric Stenosis
34
Hypertrophic Pyloric Stenosis sign in imaging
string sign” or “double railroad track sign”:
35
hallmark metabolic derangement in Hypertrophic Pyloric Stenosis:
- Hypochloremic - Hypokalemic - Metabolic alkalosis
36
Treatment of Hypertrophic Pyloric Stenosis:
Fredet–Ramstedt pyloromyotomy (without entering the lumen/mucosa)
37
How does intussecption usually present?
Crampy, sever, intermittent abdominal pain last for 1-2min with 5-10min intervals:
38
Describe stool in intussecption
Red current jelly stool
39
Most common site of intussusception:
Ileocecal valve
40
What is dance’s sign
RLQ mass on plain abdominal film, empty RLQ on palpation
41
Treatment of intussusception:
Air or barium enema; 85% reduce with hydrostatic pressure
42
Bilious vomiting in infant considered as a .......... until proven otherwise:
Malrotation ( volvulus )
43
Procedure done for malrotation (name)
Ladd’s procedure