Approach To Patient With Lower GI Problems - Dr. McGowen Flashcards
4 common conditions causing hemarochezia
- Diverticulosis bleed
- IBD
- Ischemic colitis
- Inteussusception
hemarochezia and under 50yo
- Infectious colitis
- IBD
- Anorectal disease (hemorrhoids, anal fissures)
- Meckel Diverticulum
hemarochezia and over 50yo
- Malignancy
- Diverticulosis
- Arterial problem (AVM, Angiodysplasia, Angioectasia)
- Ischemic Colitis
LGIB DX and TX
- colonscopy, massive do EGD
2. NPO (nothing by mouth), IV , stabilize
how many hematochezias are from UGIB
10%
Diverticulosis
prevalence and where
most common cause of LGIB
most common in sigmoid colon
Diverticulosis
sx
90% are asymptomatic and only see accidentally in colonoscopy, LGIB, PAINLESS**,
Diverticulosis DX and TX
- colonoscopy if stable, labs until then
2. high fiber diet to prevent constipation (if asymptomatic), NPO and IV or surgery if symptomatic
IBD (UC, CD) risks
- ABs in 1st year of life
- genetics and environment
- breastfeeding protects against it
- appendectomy before 20yo can protect against UC
IBD (UC, CD) DX
1. serum ANCA = UC serum ASCA : CD 2. fecal lactoferrin, calpretectin 3. String sign : (narrowing from inflammation) CD 4. Lead pipe colon : X haustra in UC
IBD (UC, CD) risks TX
NPO, surgery, screening for colonoscopy cancer as prevention
CD looks like what
= acute ileitis (appendicitis)
CD SX
D, Fatigue, Malaise, WL, smoking cigarettes is a huge risk
usually RLQ tenderness
CD DX
ASCA serum
CD TX
ABs, NGT if obstruction, drain abscesses, surgery only if needed
UC SX
Bloody D, fecal urgency (Tenesmus)
Lower abd cramping, relieved when pooping, usually LLQ pain
UC Risk and associated with
- recently stopped smoking (more incidents in non-smoking pts)
- Associations:
= erythema nodosum
= Pyoderma gangrenosum
= Primary sclerosing cholangitis
UC DX
ANCA serum
UC Tx
surgery can be curative only not first thing ro so
blood transfusion if needed
UC complications
- Toxic Megacolon –> colonic perforation
- colon cancer
- Primary Sclerosing cholangitis —-> Cholangiocarcinoma
- DVT
extraGI SX of UC
- Gallstones
2. Nephrolithiasis
extraGI SX of CD
- Pyroderma Gangrenosum
- Toxic megacolon
- Ankylosing spondylitis
Ischemic Colitis where and SX
- Watershed areas : splenic flexures and distal SC
2. Cramping LLQ/LUQ, Bloody D, atherosclerosis, estrogen therapy can cause it
Ischemic Colitis DX
- Xray = thumb- printing image in colon,
2. Sigmoidoscopy = shows submucosal hemorrhage, friability : risk for perforation= free air under diaphragm
Intussusception risks
- polyp or mass or Meckels in adults
2. infants common
Intussusception SX
- Lower ABD pain
2. V, Bloody jelly like stool (currant jelly)
Intussusception Physical exam
Dance sign : emptiness feeling when palpating RLQ
Intussusception DX and Tx
- CT abd + US abd = telescoping bowel (Bulls eye)
2. NPO, IV fluids, surgery
Hemorrhoids how does it happen
hydrostatic P increased in hemorrhoidal venous pleux
Hemorrhoids SX
Bright Red Blood per rectum (BRBPR) (drops on tissue or in toilet)
Hemorrhoids DX
DRE, colonoscopy to rule out other cancer or diseases
Hemorrhoids TX
- bulk laxatives + stool softerners, sitz baths, witch hazel compresses,
- severe bleeding : rubberband ligation, sclerotherapy injection, surgery
Hemorrhoids complications
Thrombosed external Hemorrhoids : very painful acute pain, tense blue nodule (pain goes away in 2-3 days) ,sitz baths and analgesics
Anal fissures what is it
ulcer less then 5mm in anal skin, usually from pooping, (constipation or straining)
Anal fissures SX
sever, tearing pain followed by throbbing pain
can have hematochezia or drops on toilet paper
Anal fissures DX
DRE can be too painful
inspection by spreading cheeks
colonscopy to rule out other things
Anal fissures TX
fiber supplements, sitz baths, ointments to relax anal canal
Anal Cancer happens how
HPV, chronic hemorrhoids, irritations, perianal fissures, LI cancer
Anal Cancer SX
analrectal pain, bleeding, othcing, perianal mass, BM changes, DRE mass
= usually SCC or can by adenocarcinoma, melanoma)
Anal Cancer DX
Pap anal test, anoscopy, US, DRE
Anal Cancer TX
HPV vaccine
chema radiation , surgery,
Perianal Pruritus (pruritus ani) happens how
- Poor anal hyagine (fissular, hemorrhoids, skin tags)
2. pinworms, staph, strep, STIs, dermititis, soaps that irritate
Perianal Pruritus (pruritus ani) SX and DX
perianal itching, and discomfort
DRE and inspection, tape teszt for pinworm, biposy
Occult GI bleed is what and usually from
- bleeding not seen by pt or physician
- premenopausal Fm IDA
- pt with IDA over 45yo think colon cancer
Occult GI bleed DX
- test for Celiac D if IDA, (IgA anti-Ttg)
- FOBT (fecal occult Blood test)
- FIT (fecal immunochemical test)
FOBT
false + and false -
Guaiac-based test :
- can be + if you eat red meats, Fe+3, asprin, UGIB
- can be - if VITC ingesting, intermittent bleeding
FOBT
Heme and Hb detection, sensitive
FIT
for Hb, most sensitive for colorectal cancer and advanced adenomas (detects human globin)
Fecal DNA tests
stool hb, to look at DNA for mutated tumor cells
Colon Cancer : colorectal cancer, adenocarcinoma
who and how
- greater then 45yo think about it
2, from polyps - high risk in Strep bovis bacteremia (also called strep gallolyticus)
Colon Cancer : colorectal cancer, adenocarcinoma SX
- Leser Trelat sign (seb K)
2. bloody stool
Colon Cancer : colorectal cancer, adenocarcinoma RIGTH SIDE SX
- usually late dx
- anemia,
- WL, blood in stool
- perforations, fistulas, volvulus, inguinal hernia
Colon Cancer : colorectal cancer, adenocarcinoma LEFT SIDE SX
- rectal bleeding
- C, D, narrowing
- abd pain, back pain
Colon Cancer : colorectal cancer, adenocarcinoma DX
- colonoscopy
2. Barium enema (apple core sign*)
Arteriovenous malformations (AVM), Angioectasia happens how and SX
- occult GIB, painless bleeding
- usually over 70yo
- common in CRF or Aortic stenosis
- IDA can happen with no clear cause
Arteriovenous malformations (AVM), Angioectasia you know it pt shows up and has
- over 60yo
- normal EGD, not WL, ABD pain, neoplasms)
- occult bleeding
Unintentional WL is defined as and questions to ask
- 5% -10% WL in 6mos
2. difficulty eating?, dysgeusia (distorted sense of taste), dysphagia, Anorexia, N, change in BM
Unintentional WL tests and causes
- poor dentition, oral thrush
- DRE, prostate and GI issues
- Pelvic exam on females
- stool occult blood test
- depression
ABD Aortic Aneurism (AAA) risk and SX
- atherosclerosis, males, FH, HTN, smoking, age
2. asymptomatic usually, non-tender mass felt, abd pulsations, (pain in lower back, chest, scrotum)