Injection injury occurs when a jet of hydraulic fluid pierces the skin and enters the bloodstream.

• A. Burns
• B. Injection injury
• C. Whiplash/Striking
• D. Pollution

Answer: (B)

The main idea here is high‑pressure injection injuries. A jet of hydraulic fluid can be forced through the skin so forcefully that it penetrates deep tissues and, if it gets into a blood vessel, can travel through the bloodstream. This isn’t just a simple puncture wound; the fluid under pressure can cause extensive internal damage, tissue necrosis, and even systemic complications like embolism. That combination—skin puncture by a high‑pressure fluid jet and potential entry into the bloodstream—defines an injection injury, making it the best description for this scenario.

Burns involve heat or chemical damage, not a penetrating high‑pressure jet entering the body. Whiplash or striking injuries come from blunt force or rapid movement, not a puncturing jet. Pollution refers to environmental contamination, not a bodily injury. So the term that fits the mechanism described—a jet of hydraulic fluid piercing the skin and entering the bloodstream—is injection injury. If such an incident occurs, it’s an urgent medical issue requiring prompt evaluation and appropriate wound care, potential debridement, infection control, and monitoring for vascular or systemic complications.