Urinary retention

Question 1

acute urinary retention presentation?

Answer 1

difficulty voiding and a palpable lower abdominal mass (overfilled bladder) .

Question 2

acute urinary retention can be caused by?

Answer 2

first-generation H1 antihistamines ( ex: diphenhydramine side effects).

Question 3

first generation H1 antihistamines

Answer 3

ex: diphenhydramine, chlorpheniramine, hydroxyzine. also have anticholinergic effects ( ex: muscarinic receptors of the parasympathetic nervous system) which can manifest as dryness of the eyes, dryness of the oral mucosa and respiratory passages, or urinary retention.

Question 4

acute urinary retention caused by anticholinergic agents?

Answer 4

detrusor muscle contraction and to a lesser extent, impaired internal sphincter relaxation, both of which are controlled by parasympathetic nervous system input from the pelvic splanchnic nerves.

Question 5

risk factors?

Answer 5

elderly men who have some degree of obstruction due to benign prostatic hyperplasia are at higher risk for urinary retention due to anticholinergic agents.