Bariatric Surgery, C42 P281-283 Flashcards Preview

Section II General Surgery P203Surgical Recall Sixth > Bariatric Surgery, C42 P281-283 > Flashcards

Flashcards in Bariatric Surgery, C42 P281-283 Deck (16):
1

What is it?
P281

Weight reduction surgery for the
morbidly obese

2

Define morbid obesity.
P281

1. BMI >40 (basically, >100 pounds
above ideal body weight) or
2. BMI >35 with a medical problem
related to morbid obesity

3

What is the BMI?
P281

Body Mass Index

4

What is the formula for BMI?
P281

Body weight in kg divided by height in
meters squared

5

What is a formula for a
rough estimate of BMI
without using metric
measures?
P282

Wt (pounds) x 703 / (Ht in inches)

6

What medical conditions
are associated with morbid
obesity?
P282

Sleep apnea, coronary artery disease, pulmonary
disease, diabetes mellitus, venous
stasis ulcers, arthritis, infections, sexhormone
abnormalities, HTN, breast
cancer, colon cancer

7

What are the current
options for surgery?
P282

Gastric bypass (malabsorptive)
Vertical-banded gastroplasty

8

Define gastric bypass.
P282 (picture)

Stapling off of small gastric pouch
(restrictive)
Roux-en-Y limb to gastric pouch (bypass)

9

How does gastric bypass work?
P282

1. Creates a small gastric reservoir
2. Causes dumping symptoms when a
patient eats too much food or highcalorie
foods; the food is “dumped”
into the Roux-en-Y limb
3. Bypass of small bowel by Roux-en-Y
limb

10

Which operation works best
overall?
P283

Gastric bypass (mean weight loss 50% of
excess weight)

11

What are the possible
postoperative complications
after weight reduction
surgery?
P283

Gallstones (if gallbladder in situ),
anastomotic leak, marginal ulcer, stenosis
of pouch/anastomosis, malnutrition,
incisional hernia, spleen injury, iron
deficiency, B12 deficiency

12

What is the most common
sign of an anastomotic leak
after a gastric bypass?
P283

Tachycardia

13

What is the incidence of
anastomotic leak?
P283

≈3% (1%–5%)

14

What is the mortality rate of
an anastomotic leak?
P283

≈10%

15

What is a lap-band?
P283 (picture)

Laparoscopically placed band around
stomach with a subcutaneous port to
adjust constriction; results in smaller
gastric reservoir

16

What is a Petersen’s hernia?
P283

Seen after bariatric gastric bypass—
internal herniation of small bowel through
the mesenteric defect from the Roux-en-Y
limb