This drug is used to?& x20; - NORCET 1 - 2020

NORCET 1 - 2020

Pharmacology

Easy

Appeared in: NORCET 1 - 2020

Explanation

The image shows Atropine Sulphate, a classic anticholinergic (or antimuscarinic) drug.
Anticholinergic drugs work by blocking the action of acetylcholine, a neurotransmitter responsible for stimulating the 'rest and digest' functions of the parasympathetic nervous system.
One of the primary actions of blocking acetylcholine at muscarinic receptors is the inhibition of exocrine glands.
This leads to a significant reduction in bodily secretions, including saliva, sweat, and mucus in the respiratory tract.
This antisecretory effect is a key reason atropine is used as a preanesthetic medication to ensure a dry airway during surgery.

Option A: Atropine has no direct analgesic (pain-relieving) properties.
Option B: Atropine is not an anti-inflammatory agent and does not reduce swelling.
Option D: This is the direct opposite of atropine's effect. As an anticholinergic, it dries secretions.

Visual 1: Diagram illustrating the mechanism of action of anticholinergic drugs at the muscarinic receptor synapse, showing how atropine blocks acetylcholine.
Visual 2: Infographic listing the common side effects of anticholinergic drugs, using the mnemonic 'can't see, can't pee, can't spit, can't shit'.

Clinical Relevance

Nursing practice connection: Knowing Pharmacological action of Atropine Sulphate helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
A primary nursing role when administering atropine pre-operatively is patient education. The nurse must inform the patient that they will experience a very dry mouth and that this is an expected and intended effect of the drug.
Nurses must monitor for common anticholinergic side effects, including tachycardia, urinary retention (especially in older males with prostate issues), constipation, and blurred vision.
Atropine is contraindicated in patients with narrow-angle glaucoma because it can cause mydriasis (pupil dilation), which can precipitate a dangerous increase in intraocular pressure.

How to Approach the Question

First, carefully examine the image to identify the drug. The label clearly reads 'Atropine Sulphate Injection I.P.'.
Next, recall the pharmacological class of Atropine. It is a prototype anticholinergic (or antimuscarinic) agent.
Think about the mechanism of anticholinergic drugs. They block the parasympathetic nervous system's 'rest and digest' functions.
Consider the main effects of this blockade: drying of secretions, increased heart rate, pupil dilation, and relaxation of smooth muscle. The mnemonic 'can't see, can't pee, can't spit, can't shit' can help remember these effects.
Evaluate the given options against these known effects. 'Decrease secretion' is a primary and well-established action of atropine.
Eliminate the other options based on pharmacological principles: atropine is not an analgesic, not an anti-inflammatory, and it does not increase secretions.

Concept Tested & Keywords

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