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Gastrointestinal
Constipation
22
Medical
Graduate
02/04/2010

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Cards

Term
Chronic constipation is defined as at least 2 of the following for at least 12wks in 12mths:
Definition
1)<3 BMs/wk 2)Excessive straining for 25% BMs 3)Incomplete evacuation /p 25% of BMs 4)Passage of hard or pellet-like stool in 25% BMs
Term
What gender is constipation more common? What age group?
Definition
Females. Children and elderly.
Term
What is the most common cause of constipation?
Definition
Poor dietary (low fiber/fluid intake) and behavioral habits
Term
What genetic pathology might you consider in a pediatric pt w/ chronic constipation?
Definition
Hirschsprung Dz
Term
Why are the elderly at increased risk for constipation? (4)
Definition
Polypharmacy, inc. rectal capacity, dec. colonic motility, physical limitations
Term
What meds can cause constipation?
Definition
Chronic laxative/cathartic use, benadryl (anti-cholinergics/anti-histamines), opioids, iron
Term
What dz causing neurologic gut dysfunction can cause constipation? (4)
Definition
Parkinson's dz, MS, sacral nerve damage, and paraplegia
Term
What myopathies cause constipation?
Definition
Dermatomyositis and myotonic dystrophy
Term
What endocrine d/o result in constipation?
Definition
hypothyroidism, hyperparathyroidism, and DM
Term
What electrolyte d/o cause constipation?
Definition
hypercalcemia and hypokalemia
Term
What is normal transit constipation?
Definition
Chronic constipation 2/2 low fiber diet
Term
What are the 2 types of primary constipation?
Definition
Normal vs. slow transit
Term
What are causes of slow transit contipation?
Definition
Idiopathic, GI dysmotility syndrome, evacuation d/o (psychosocial - withholding BMs)
Term
What causes secondary constipation?
Definition
Systemic d/o (myopathy, endocrine, lyte d/o), meds, or ileus/obs.
Term
Straining at stools and feeling incomplete evacuation are cardinal sx of what d/o?
Definition
Pelvic floor dyssynergia
Term
Absence of anal relaxation and inadequate perineal descent suggests what?
Definition
Obstructive defecation
Term
Name 6 alarm sx in a pt w/ c/o constipation that would necessitate further w/u.
Definition
Severe constipation, wt loss, rectal bleed, anemia, new in >50yo, family h/o colon CA or IBS
Term
What can result from repeated laxative abuse?
Definition
Cathartic colon (ex-lax)
Term
What is the tx for pts w/ normal transit constipation?
Definition
Lifestyle changes: bowel training, exercise, high fiber diet, at least 1,500ml fluid/d, stools softeners
Term
Which meds are effective for slow transit constipation?
Definition
1)Fiber laxative: psyllium 2)Osmotic: polyethylene glycol or lactulose 3)Stimulant: senna
Term
What pt would you not want to use osmotic laxatives?
Definition
CHF or renal insufficiency (pulls water from bowel wall into the lumen)
Term
What tx are used for pediatric constipation?
Definition
{olyethylene glycol (Miralax), apple juice, Karo syrup
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