Pharmacology

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Updated: May 12, 2026 at 5:28 AM

Pharmacology

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Pharmacology

May 11, 2026, 07:47 PM

[poll]

27,900

Pharmacology

May 11, 2026, 07:47 PM

Correct Answer - A
Ans: A. Bethanechol
Bethanechol is a preferred drug in the treatment of postpartum
and postoperative nonobstructive urinary retention, and it also
can counteract bladder dysfunction often seen with phenothiazines
and tricyclic antidepressants.
It can afford symptomatic relief in congenital megacolon and
gastroesophageal reflux but is rarely used for these.

16,600

Pharmacology

May 11, 2026, 07:47 PM

Correct Answer - A
Ans: A. Intravenous digoxin
Management of AMS follows three axioms: a) further ascent should
be avoided until the symptoms have resolved, b)patients with no
response to medical treatment should descend to a lower altitude
and c) if and when HACO is suspected, patients should urgently
descend to a lower altitude.
Descent and supplementary oxygen are the treatments of choice
and for severe illness, the combination provides optimal therapy.
Remarkably, a descent of only 500 to 1000 m usually leads to
resolution of acute mountain sickness while high-altitude cerebral
edema(HACO) may require further descent. Simulated descent with
portable hyperbaric chambers, now commonly available in remote
locations, are also effective.
Medical therapy becomes crucial when the descent is not
immediately possible.

18,600

Pharmacology

May 11, 2026, 07:47 PM

[poll]

26,700

Pharmacology

May 11, 2026, 07:47 PM

[poll]

29,900

Pharmacology

May 11, 2026, 07:47 PM

Follow the Doctor usmle channel on WhatsApp: https://whatsapp.com/channel/0029Va5uYgUKGGGNpDS2LJ2X

20,400

Pharmacology

May 11, 2026, 07:47 PM

Correct Answer - A
Ans: A. Rifampicin
Overall inhibition of RNA synthesis by rifampicin is caused by a
destabilizing effect on the binding of the intermediate
oligonucleotides to the active enzyme-DNA complex.
Rifampicin itself can only interact specifically with RNA polymerase
if the enzyme is free or in a binary complex with DNA.

18,100

Pharmacology

May 11, 2026, 07:47 PM

Correct Answer - B
Ans: B. Trihexyphenidyl
* Fluphenazine may block the effects of agents used to treat
Parkinson's disease such as levodopa/carbidopa.
* Trihexyphenidylis an antispasmodic drug that exerts a direct
inhibitory effect on the parasympathetic nervous system.
- It also has a relaxing effect on smooth muscle.
- It is indicated in all forms of Parkinsonism.
* Trihexyphenidyl works as an anticholinergic and is used for the
treatment of tremors, spasms, stiffness, and weak muscle control
seen in patients with Parkinson’s disease.
- It can also be used for the prevention or treatment of similar
muscular conditions which are caused by certain central nervous
system (CNS) drugs such as fluphenazine, haloperidol,
chlorpromazine.

17,100

Pharmacology

May 11, 2026, 07:47 PM

[poll]

17,900

Pharmacology

May 11, 2026, 07:47 PM

[poll]

25,300

Pharmacology

Mar 30, 2026, 11:16 PM

Correct Answer - A
Ans: A. Neostigmine
Neostigmine has been traditionally used as the agent of choice
to reverse Neuromuscular Blockade (NMB) after muscle paralysis
during general anesthesia.
Anticholinesterases (neostigmine) are generally used to reverse the
effects of neuromuscular blocking agents

16,800

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