Ophitoxaemia refers to poisoning due to ?
**Core Concept**
Ophitoxaemia is a clinical condition characterized by poisoning due to venom from snake bites. It involves the systemic effects of snake venom, which can cause a range of symptoms depending on the type of snake and the amount of venom injected.
**Why the Correct Answer is Right**
The venom from snake bites contains a complex mixture of pharmacologically active molecules, including enzymes, peptides, and proteins. These molecules can cause systemic effects by disrupting normal physiological processes, such as coagulation, inflammation, and neurotransmission. For example, some snake venoms contain phospholipases, which can cause tissue damage and activate the complement system, leading to inflammation and tissue necrosis.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it refers to poisoning due to a different type of venom, specifically that from bees. Bee venom is a complex mixture of bioactive molecules, including melittin, apamin, and phospholipase A2, but it is not responsible for ophitoxaemia.
**Option B:** This option is incorrect because it is a type of poisoning due to a different type of venom, specifically that from scorpions. Scorpion venom contains a variety of bioactive molecules, including neurotoxins and cardiotoxins, but it is not responsible for ophitoxaemia.
**Option C:** This option is incorrect because it is a type of poisoning due to a different type of venom, specifically that from spiders. Spider venom contains a variety of bioactive molecules, including neurotoxins and enzymes, but it is not responsible for ophitoxaemia.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the clinical effects of snake venom can vary widely depending on the type of snake, the amount of venom injected, and the location of the bite. Early recognition and treatment of snake bites are critical to prevent serious complications and improve patient outcomes.
**Correct Answer: D. Snake venom.