Chapter 4 - Surgical Percentages

Question 1

What percentage of people in the US will develop acute appendicitis?

Answer 1

~7%

Question 2

What is the acceptable percentage of normal appendices removed with the preoperative diagnosis of appendicitis?

Answer 2

Up to 20%

Better to remove some normal appendices than miss acute appendicitis, which could rupture

Question 3

In what percentage of cases does an upper gastrointestinal bleed stop spontaneously?

Answer 3

~80%

Question 4

What percentage of American women develop breast cancer?

Answer 4

12%

Question 5

What percentage of patients with gallstones will have radiopaque gallstones on abdominal X-ray (AXR)?

Answer 5

~10%

Question 6

What percentage of kidney stones are radiopaque on abdominal X-ray (AXR)?

Answer 6

~90%

Question 7

At 6 weeks, wounds have achieved what percentage of their total tensile strength?

Answer 7

~90%

Question 8

What percentage of the population has a Meckel’s diverticulum?

Answer 8

2%

Question 9

One unit of packed RBCs increases the hematocrit by how much?

Answer 9

3%

Question 10

Additional 1 liter by nasal cannula increases FiO2 by how much?

Answer 10

3%