A patient with organophosphorus poisoning is brought to the emergency department. Which of the following actions is not appropriate in the initial management?

Appeared in: NORCET 9 Mains - 2025

Explanation

Starting an adrenaline infusion is inappropriate in the initial management of organophosphorus (OP) poisoning.
The myocardium in OP poisoning is often hypoxic and irritable due to the accumulation of acetylcholine.
Administering adrenaline in this state significantly increases the risk of precipitating fatal cardiac arrhythmias, such as ventricular fibrillation.
The correct drug to manage bradycardia and other muscarinic effects in OP poisoning is Atropine, which acts as a competitive antagonist to acetylcholine at muscarinic receptors.

Option A: This is an appropriate and often necessary action. Respiratory failure due to paralysis of respiratory muscles is a primary cause of death in severe OP poisoning.
Option B: This is a critical and appropriate action. OP poisoning causes excessive bronchial secretions (bronchorrhea), which can obstruct the airway. Aggressive suctioning is vital to maintain airway patency.
Option C: This is an essential and appropriate first step. Organophosphates can be absorbed through the skin, so removing contaminated clothing and washing the skin prevents ongoing absorption of the poison.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Initial management and contraindications in organophosphorus poisoning in acute care settings.
A nurse's primary role in OP poisoning is to prioritize the ABCs: Airway (suctioning, preparing for intubation), Breathing (oxygen), and Circulation (IV access, monitoring).
Nurses must perform decontamination quickly while wearing appropriate Personal Protective Equipment (PPE) to prevent self-exposure.
Administering antidotes like atropine requires careful titration. The nurse monitors for signs of 'atropinization' (dry mouth, dry skin, increased heart rate, pupil dilation) to ensure therapeutic levels are reached without causing toxicity.

How to Approach the Question

First, identify the question type. This is a negative question asking what is 'not appropriate'.
Recall the pathophysiology of organophosphorus (OP) poisoning: it's a cholinergic crisis due to acetylcholinesterase inhibition.
Think about the main symptoms: the 'DUMBBELS' mnemonic (Diarrhea, Urination, Miosis, Bronchorrhea/Bradycardia, Emesis, Lacrimation, Salivation) for muscarinic effects and muscle weakness/paralysis for nicotinic effects.
Evaluate each option based on the standard emergency management protocol (ABCDE: Airway, Breathing, Circulation, Decontamination, Exposure/Environment).
Options A (intubation) and B (suction) address Airway and Breathing. Option C (decontamination) addresses Decontamination. These are all core principles.
Evaluate Option D (adrenaline). While bradycardia is a symptom, the specific antidote is atropine. Consider the risks of adrenaline in a poisoned, irritable heart. This makes it the most likely inappropriate action.

Concept Tested & Keywords

Concept Tested: Initial management and contraindications in organophosphorus poisoning.
Stem keywords: organophosphorus poisoning, emergency department, initial management
Lead-in keywords: not appropriate
Clinical cues: The care setting changes urgency, monitoring level, and the expected nursing action.
Negative lead-in flag: The question asks for an action that is NOT appropriate, requiring you to identify the contraindicated intervention among several correct ones.

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 755-757

E6 Medicine Davidson Principles Practice 24e p. 166-168

E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 2263-2265

Practise the full NORCET 9 Mains - 2025

Attempt every question from this paper in a timed mock, then review the full solution for each one.