CH Pharmacology & Drug Administration 3 — Questions and Answers
Question 1: Which laxative mechanism is most similar to the principle behind colonic hydrotherapy?
- Stimulant laxatives that trigger nerve contractions
- Osmotic laxatives that draw water into the colon (Correct answer)
- Bulk-forming laxatives that add fiber to stool
- Lubricant laxatives that coat the stool
Correct answer: Osmotic laxatives that draw water into the colon
Osmotic laxatives work by increasing water content in the colon, which is mechanically similar to how colonic hydrotherapy softens and flushes waste.
Question 2: A client taking antidepressants reports chronic constipation. Which class of antidepressants most commonly causes this side effect?
- SSRIs
- Tricyclic antidepressants (TCAs) (Correct answer)
- MAO inhibitors
- Bupropion
Correct answer: Tricyclic antidepressants (TCAs)
TCAs have strong anticholinergic effects that slow GI motility and commonly cause constipation, making colonic therapy more relevant for these clients.
Question 3: Why is it important to ask clients about recent use of NSAIDs before colonic hydrotherapy?
- NSAIDs increase the risk of GI mucosal irritation and bleeding (Correct answer)
- NSAIDs prevent electrolyte absorption
- NSAIDs cause excessive bowel spasms during irrigation
- NSAIDs interfere with the body's natural probiotic balance only
Correct answer: NSAIDs increase the risk of GI mucosal irritation and bleeding
NSAIDs inhibit prostaglandins that protect the GI lining, increasing the risk of mucosal damage or bleeding during colonic procedures.
Question 4: A client is prescribed warfarin. What is the primary reason colonic hydrotherapy may be contraindicated?
- Warfarin causes excessive water retention in the colon
- Anticoagulant therapy raises risk of rectal or mucosal bleeding (Correct answer)
- Warfarin interacts with minerals in filtered water
- Warfarin reduces intestinal motility
Correct answer: Anticoagulant therapy raises risk of rectal or mucosal bleeding
Warfarin prevents clot formation, so any mucosal trauma during colonic hydrotherapy could result in uncontrolled bleeding.
Question 5: Which type of medication can reduce the effectiveness of colonic hydrotherapy by slowing intestinal motility?
- Opioid analgesics (Correct answer)
- Antihistamines
- ACE inhibitors
- Statin medications
Correct answer: Opioid analgesics
Opioids bind to gut receptors and strongly inhibit peristalsis, causing constipation that may reduce the effectiveness of colonic cleansing.
Question 6: When a client reports using magnesium supplements, which relevant pharmacological effect should a colonic hydrotherapist consider?
- Magnesium acts as an osmotic agent and can loosen stools (Correct answer)
- Magnesium tightens the anal sphincter, complicating insertion
- Magnesium causes fluid retention in the colon wall
- Magnesium is contraindicated with all herbal supplements
Correct answer: Magnesium acts as an osmotic agent and can loosen stools
High-dose magnesium supplements function as osmotic laxatives, which can compound the laxative effect of colonic hydrotherapy.
Question 7: A client taking lithium for bipolar disorder wants colonic hydrotherapy. What is the most critical concern?
- Lithium levels may be affected by fluid and electrolyte changes (Correct answer)
- Lithium coats the colon and reduces water absorption
- Lithium is only a concern when combined with antacids
- Lithium causes excessive gas production during treatment
Correct answer: Lithium levels may be affected by fluid and electrolyte changes
Lithium has a narrow therapeutic window, and dehydration or electrolyte shifts from colonic therapy can raise lithium levels to toxic concentrations.
CH Pharmacology & Drug Administration 3
Which laxative mechanism is most similar to the principle behind colonic hydrotherapy?