Surgical Percentages Flashcards
What percentage of people
in the United States will
develop acute appendicitis?
> 7%
What is the acceptable percentage of normal appendices removed with the preoperative diagnosis of appendicitis?
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
In what percentage of cases
can ultrasound diagnose
cholelithiasis?
98%
In what percentage of cases
does a lower GI bleed stop
spontaneously?
> 90%
In what percentage of cases
does a UGI bleed stop
spontaneously?
> 80%
What percentage of patients undergoing laparotomy develop a postoperative small bowel obstruction at some time later?
> 5%
What percentage of
American women develop
breast cancer?
10%
What percentage of patients
with acute appendicitis will
have a radiopaque fecalith
on abdominal x-ray (AXR)?
Only about 5%
What percentage of patients
with gallstones will have radiopaque
gallstones on AXR?
> 10%
What percentage of kidney
stones are radiopaque on
AXR?
> 90%
At 6 weeks, wounds have
achieved what percentage of
their total tensile strength?
> 90%
What percentage of patients
with ARDS will die?
> 40%
What percentage of the
population have a Meckel’s
diverticulum?
2%
What is the risk of
appendiceal rupture
24 hours after the onset of
symptoms?
> 25%
What percentage of colonic
villous adenomas contain
cancer?
> 40% (Think: VILLous VILLain)
