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A 69-year-old man with benign prostatic hyperplasia develops urinary retention 1 day after undergoing removal of a melanoma. After catheterization, a drug is
administered that increases phosphoinositide turnover in the smooth muscle cells of the bladder fundus but has no effect on nicotinic synapses. This drug is most likely
which of the following?

A) Atropine
B) Bethanechol
C) Neostigmine
D) Succinylcholine
E) Trimethaphan
 

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A 69-year-old man with benign prostatic hyperplasia develops urinary retention 1 day after undergoing removal of a melanoma. After catheterization, a drug is
administered that increases phosphoinositide turnover in the smooth muscle cells of the bladder fundus but has no effect on nicotinic synapses. This drug is most likely
which of the following?

A) Atropine
B) Bethanechol
C) Neostigmine
D) Succinylcholine
E) Trimethaphan
Its Benthanechol.
 

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A 69-year-old man with benign prostatic hyperplasia develops urinary retention 1 day after undergoing removal of a melanoma (postoperative urinary retention ). After catheterization, a drug is
administered that increases phosphoinositide turnover in the smooth muscle cells of the bladder fundus but has no effect on nicotinic synapses. This drug is most likely
which of the following?

B) Bethanechol
 

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142 Posts
A 69-year-old man with benign prostatic hyperplasia develops urinary retention 1 day after undergoing removal of a melanoma. After catheterization, a drug is
administered that increases phosphoinositide turnover in the smooth muscle cells of the bladder fundus but has no effect on nicotinic synapses. This drug is most likely
which of the following?

A) Atropine
B) Bethanechol
C) Neostigmine
D) Succinylcholine
E) Trimethaphan
Bethanechol would be right answer. It has effect only on Muscarinic receptors and its action is Gq coupled (increases phosphoinositide).
 
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