Prostate, rectum Flashcards
What muscles supply internal and external anal sphincters
Internal: involuntary
External: voluntary
What nerves supply anus vs. rectum
Anus: somatosensory
Rectum: visceral
what line is located at the anorectal junction?
pectinate or dentate line separating skin from mucosa and visceral from somatosensory nerves
location and size of prostate
heart shaped on the anterior wall of the rectum about 2.5 cm, only lateral lobes and median sulcus palpable
what can be felt on the anterior rectal wall of a female?
cervix
Two categories of health history
- lower GI
2. lower GU
Incidence of Prostate cancer
leading cancer in men in US and 2nd leading COD
incidence of colorectal cancer
2nd COD, 3rd cancer in US
screening for prostate cancer for average risk
annual DRE >50yo
screening for prostate ca for high risk
DRE >45 yo
who is at high risk for prostate Ca
African americans
1st degree relative of early prostate cancer
who is at highest risk for prostate ca
multiple first degree relative with early dx of prostate ca (67 yo)
Screening for highest prostate ca risk
DRE >40yo
Avg risk screening for colorectal ca (1 of 5)
> 50 yo one of the following
- Flex sig every 5 yrs
- colonoscopy every 10 yr
- virtual conoloscopy every 5 yr
- DCBaE (barium) every 5 yr
- anual FOBT
what position do you perform rectal exam
LLDCB with bent right knee
