Forensic Medicine Practice

20 learning units • 10 questions per unit • 200 explained questions

Module 19 — Pesticides, Phosphides & Envenomation

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Question 01 • Single best answer

Which enzyme is inhibited by organophosphate pesticides?

A. HMG-CoA reductase B. Acetylcholinesterase C. Xanthine oxidase D. Gastric proton pump

Question 02 • Single best answer

Which finding reflects nicotinic involvement in organophosphate poisoning?

A. Fasciculations and muscle weakness B. Isolated gastric acid suppression C. Reduced LDL cholesterol D. Selective platelet inhibition

Question 03 • Single best answer

What is atropine's main role in this poisoning?

A. Reversal of muscarinic effects such as excessive bronchial secretions B. Direct restoration of all muscle strength C. Chemical destruction of every pesticide D. Replacement of ventilatory support in all cases

Question 04 • Single best answer

Which is a more meaningful treatment endpoint than pupil size alone?

A. A fixed requirement for maximal pupil dilation B. Improvement in clinically important respiratory findings C. The container's color changing D. A single undocumented pulse reading

Question 05 • Single best answer

Why may monitoring remain necessary after initial improvement in organophosphate poisoning?

A. Delayed weakness or neuropathy can occur B. Every patient is fully recovered immediately C. Atropine eliminates all delayed effects D. Laboratory normalization guarantees no later symptoms

Question 06 • Single best answer

Which statement about aluminum-phosphide poisoning is accurate?

A. Atropine is a universal curative antidote B. It is identical to elemental phosphorus exposure C. Severe shock may occur and no reliably established specific antidote exists D. It causes only superficial skin irritation

Question 07 • Single best answer

Why should paraquat exposure not be treated as though every feature were organophosphate toxicity?

A. All pesticides inhibit the same enzyme B. The label pesticide determines one antidote C. It has a different mechanism and important pulmonary and organ toxicity D. Paraquat cannot cause systemic illness

Question 08 • Single best answer

Which first-aid approach is appropriate for suspected snakebite?

A. Cut the wound to release venom B. Suck the bite site C. Apply a tight arterial tourniquet routinely D. Minimize movement and obtain urgent trained medical care

Question 09 • Single best answer

What determines antivenom selection?

A. Color of the snake alone as a universal rule B. Giving any available antivenom regardless of region C. Relevant venom coverage and the patient's clinical indication D. The assumption that every bite injected venom

Question 10 • Single best answer

Why should a rescuer avoid trying to capture the snake?

A. Additional bites or exposure may endanger others B. A live snake is required before all treatment C. Treatment cannot begin without capture D. A photograph is always legally mandatory