Intense local pain, swelling, ecchymoses, and oozing of the hemolyzed blood from the site of snake bite is most likely to occur with a bite of which species of snake?
**Core Concept**
The question is testing the student's knowledge of the clinical presentation and characteristics of snake envenoming. The correct answer is based on the understanding of the venom composition and its effects on the human body.
**Why the Correct Answer is Right**
The intense local pain, swelling, ecchymoses, and oozing of the hemolyzed blood from the site of the snake bite are characteristic of a viperid snake envenoming. Viperid snakes, such as the saw-scaled viper (Echis carinatus), Russell's viper (Daboia russelii), and hump-nosed viper (Hypnale hypnale), produce a hemotoxic venom that causes local tissue damage, hemorrhage, and necrosis. The venom contains phospholipase A2 enzymes that disrupt the cell membranes, leading to hemolysis, thrombocytopenia, and coagulopathy.
**Why Each Wrong Option is Incorrect**
**Option A:** Cobra venom is primarily neurotoxic, causing systemic symptoms such as respiratory failure, paralysis, and cardiac arrest. It does not typically cause intense local pain, swelling, and ecchymoses.
**Option B:** Krait venom is also neurotoxic, with symptoms similar to those of cobra venom. It does not cause significant local tissue damage or hemorrhage.
**Option C:** Sea snake venom is primarily myotoxic, causing muscle damage and weakness. It does not typically cause intense local pain, swelling, and ecchymoses.
**Clinical Pearl / High-Yield Fact**
In cases of suspected snake envenoming, it is essential to identify the species of snake and administer appropriate antivenom promptly to prevent further tissue damage and systemic complications.
**Correct Answer:** D.