Chapter 4: Surgical Percentages Flashcards

1
Q

What percentage of people in the United States will develop acute appendicitis?

A

≈7%

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2
Q

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

A

Up to 20%; it is better to remove some normal appendices than to miss a case of acute appendicitis, which could result in a ruptured appendix

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3
Q

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

A

≈80%

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4
Q

What percentage of American women develop breast cancer?

A

12%

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5
Q

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

A

≈10%

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6
Q

What percentage of kidney stones are radiopaque on AXR?

A

≈90%

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7
Q

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

A

≈90%

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8
Q

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

A

3%

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9
Q

Additional 1 liter by nasal cannula increases FIO2 by how much?

A

3%

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