Radiologic Studies of the GI Tract Flashcards Preview

MS2 - Digestive, Endocrine, and Metabolic Systems > Radiologic Studies of the GI Tract > Flashcards

Flashcards in Radiologic Studies of the GI Tract Deck (23)
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1
Q

What can cause small bowel obstruction in a patient post-surgery?

A

Adhesions

2
Q

Why is there an increased risk of DVT in pregnant patients?

A

The IVC can be occluded

3
Q

In the lateral decubitus position, check for air _____________.

A

lateral to the large intestine

4
Q

Calcified gallbladder indicates _____________.

A

cancer

5
Q

What is a neobladder?

A

In a patient post-cystectomy (bladder removal), surgeons can create a bladder out of bowel.

6
Q

In the small intestine, the ____________ go all the way through, while in the large intestine the _________ do not .

A

plicae circulares; haustrations

7
Q

What is emphysematous cholecystitis?

A

Air in the wall of the gallbladder

8
Q

What might you notice on a CT of someone with acute bowel ischemia?

A

Blocked vessel (if the CT has contrast), meaning no enhancement

9
Q

Do not give barium to someone with _______________.

A
  • bowel obstruction, because the colon will absorb water and the barium will become concentrated
  • bowel perforation, because the colon will leak barium into the peritoneum
10
Q

Barium swallows can reveal _______________.

A

aspiration

11
Q

The fundus is a ___________ structure.

A

posterior (so it will be full of air when the patient is prone)

12
Q

Enteroclysis involves _________________.

A

injecting air and methylcellulose –provides a greater amount of detail than small-bowel follow through, but is more time and labor intensive

13
Q

Describe a good system of approaching films.

A

(1) Assess patient data: is it the correct patient? When was it taken? Are there past films for comparison?
(2) Assess the technical aspects of the film: in what position is this taken? Is the area of concern in the film? Is it a good quality?
(3) Assess and describe the anatomy: pay attention to soft tissue, alignment, and bones –particularly regarding changes from past films.
(4) Create a differential.

14
Q

What is the 3, 6, 9 rule?

A

The small intestine should be no larger than 3 cm. The transverse colon should be no larger than 6 cm. And the cecum should be no larger than 9 cm.

15
Q

What disorders can IV contrast mask?

A

Renal stones, calcifications, and hemorrhage

16
Q

Prior to giving IV contrast, screen _________ in high-risk patients.

A

creatinine

17
Q

Have a patient __________ if you’re taking an x-ray for bowel obstruction.

A

stand upright

18
Q

A cratered esophagus on barium swallow is indicative of _______________.

A

Candida infection in the esophagus

19
Q

Hepatocellular carcinoma receives its feeding from _____________ blood.

A

arterial

20
Q

Gadolinium has ________ risk.

A

very low

21
Q

What is the best technique for detecting kidney stones?

A

CT without contrast

22
Q

X-ray plain films are best for detecting _____________.

A

perforation (shown by free air) and impaction

23
Q

CTs should only be done after _____________.

A

non-radiation techniques have been used

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