Appendix Flashcards

1
Q

in appendicitis, fecoliths are usually located at the ___ of the appendix

A

exit

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2
Q

when the intralumenal pressure inside the appendix surpasses that of the _____, ischemia occurs

A

vessels

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3
Q

ischemia of the appendix can cause ___ and ___

A

edema, necrosis

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4
Q

necrosis can lead directly to ____ or can provide a site for ____

A

perforation; bacterial invasion

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5
Q

if the appendix perforates, what can happen?

A

peritonitis and sepsis

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6
Q

the first pain felt with appendicitis is called _____ pain, and is located?

A

visceral pain; periumbilical region

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7
Q

as the inflammation progresses through the wall of the appendix and reaches the serosa, pain becomes localized to the ____, also known as?

A

RLQ; McBurney’s point

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8
Q

if perforation occurs, ____ ensues, resulting in?

A

peritonitis; diffuse abdominal pain

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9
Q

sx of appendicitis

A

abdominal pain, N/V, mild fever/chills, anorexia

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10
Q

physical findings appendicitis

A

tachycardia, low grade fever, RLQ pain, Rovsing sign, Psoas sign, Obturator sign

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11
Q

tx of appendicitis

A

appendectomy + ABX (prophylactic)

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12
Q

majority of diverticula in the West are located in the _____ colon

A

sigmoid

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13
Q

microperforation of diverticula is due to?

A

inspissation with fecolith

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14
Q

diverticulitis presentation

A

LLQ pain, fever, constipation, leukocytosis, bowel obstruction, peritoneal signs if macroperf

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15
Q

do NOT do this on a pt with suspected diverticulitis

A

colonoscopy, barium enema

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16
Q

complications of macroperforation of diverticula

A

peritonitis, abscess, fistulas

17
Q

complications of microperforation of diverticula

A

local phlegmon, segmental narrowing, stricture, obstruction

18
Q

tx of diverticulitis

A

clear liquid diet, ABX against gram-neg, anaerobes; verify etiology after; surgery?

19
Q

presentation of pseudomembr colitis

A

diarrhea, crampy abdominal pain, leukocytosis, can develop toxic megacolon

20
Q

dx of PC

A

stool for c diff toxin (toxin A only tho); colonoscopy for pseudomembranes

21
Q

management of PC

A

stop ABX, AVOID anti-diarrheals, give metronidazole/vancomycin/fidaxomycin; fecal transplant?

22
Q

prominent lymphoid hyperplasia in the appendix is indicative of?

A

a normal appendix!

23
Q

microscopic features of appendicitis

A

mucosal ulceration and hemorrhage; mural hemorrhage; neutrophilic infiltration of muscularis propria

24
Q

gross features of appendicitis

A

erythema, surface exudate, perforation

25
Q

microscopic features of pseudomembranous colitis

A

volcano lesions composed of degenerating epithelial cells, PMNs, mucin, and fibrin erupting from distended crypts; varying degrees of necrosis

26
Q

diverticula occur at sites of colonic wall weakness, including?

A

portion without taeniae coli, sites where vasa recta penetrate muscularis propria

27
Q

diverticulitis causes mucosal ____ and ____

A

necrosis; inflammation

28
Q

if diverticular inflammation is sufficient, it can produce a ___ and mimic ___

A

mass; colon cancer