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GK F3 E3 > Obstruction Popcorn > Flashcards

Obstruction Popcorn Flashcards

1
Q

Blood supply to small bowel?

A

SMA

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2
Q

Blood supply to large bowel?

A

SMA & IMA

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3
Q

Innervation to small and large bowel?

A

Autonomic nervous system (ANS)

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4
Q

Digestion/Absorption of water, electrolytes, & nutrients

A

Small Bowel

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5
Q

Absorbs water & electrolytes from liquid stool –> right colon

A

Large Bowel

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6
Q

FAST transit time

A

Small Bowel

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7
Q

SLOW transit time

A

Large Bowel

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8
Q

Which study?

  • used to see air fluid levels
A

Upright x-ray

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9
Q

Which study?

  • used to see free air
A

PA chest x-ray

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10
Q

MC cause of SBO WORLDWIDE??

A

Hernias

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11
Q

MC cause of SBO in the UNITED STATES??

A

Post-operative surgical adhesions

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12
Q

SBO

  • Small intestine dilates PROXIMAL or DISTAL to obstruction??
A

Proximal

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13
Q

MC finding in a patient’s Hx of has SBO??**

A

Prior abdominal surgery**

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14
Q

Which condition?

  • Periumbilical pain (colicky, then steady)
  • Crampy pain
  • Gas in small intestine
A

SBO

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15
Q

SBO

  • Which symptom is more pronounced is obstruction is DISTAL?
A

Distention

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16
Q

SBO

  • Which symptom is more pronounced is obstruction is PROXIMAL?
A

Vomiting

17
Q

Normal or Increased Bowel Sounds

A

SBO

18
Q

Gastrografin if perforation is suspected

A

SBO

19
Q

Rebound tenderness / pt laying still

A

Strangulation (advanced/late SBO)

20
Q

Tachycardia

Hypotension

Dry membranes

Early obstruction: high pitched BS

Late obstruction: silent BS

A

SBO

21
Q

Causes of what condition?

  • narcotics
  • bedrest
  • trauma
  • hypothryoid
  • electrolyte abnormalities
  • anesthesia
  • sepsis
A

Paralytic Ileus

22
Q
  • Minimal abd pain*
  • Decreased or Absent BS
  • Gas in BOTH small & large intestine on x-ray**
A

Paralytic Ileus

23
Q

Decreased bowel motility

Bowel distended WITHOUT mechanical obstruction

A

Paralytic Ileus

24
Q

No transition zone appreciated***

Tx conservatively (NPO, NG tube, IV fluids)

A

Paralytic Ileus

25
Q

Sigmoid colon MC site!

Adhesions are RARE!!

A

LBO

26
Q

3 top causes of LBO

A
  1. Adenocarcinoma
  2. Scarring
  3. Volvulus
27
Q
  • Proximal colon distended
  • Absence of air in rectum
  • Competent ileocecal valve: closed loop & MASSIVE dilation of cecum
A

LBO plain film findings

28
Q

Localized, tender, palpable mass

A

LBO

(consistent w/ strangulated closed loop)

29
Q

Tx for Partial / Complete / Perforated LBO??

A

Partial: conservative (NG tube)

Complete: OR for laparotomy

Perforated: IMMEDIATE laparotomy w/ resection & colostomy

30
Q

Abnormal twisting of intestine –> obstruction

A

Volvulus (LBO)

31
Q

MASSIVE abd distention

MASSIVELY dilated sigmoid/cecum

A

LBO due to Volvulus

32
Q

Loss of haustral markings***

Bird’s Beak on Barium Enema

A

LBO due to Volvulus

33
Q

Tx for LBO due to Volvulus?

A

Reduced w/ sigmoidoscopy

GK F3 E3 (24 decks)

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