A 28 year old boy met with on accident and sustained severe crush injury. He is most likely to develop:
**Core Concept**
Acute kidney injury (AKI) following severe crush injuries is a common complication due to rhabdomyolysis, a condition characterized by the breakdown of skeletal muscle tissue, leading to the release of intracellular contents, including myoglobin, into the bloodstream. This can cause direct tubular injury and vasoconstriction in the kidneys.
**Why the Correct Answer is Right**
The patient is at risk of developing rhabdomyolysis, which will lead to a massive release of myoglobin into the bloodstream. Myoglobin can cause direct tubular injury, vasoconstriction, and oxidative stress in the kidneys, ultimately resulting in acute kidney injury. The kidneys are highly sensitive to the effects of myoglobin, and even small elevations in serum myoglobin levels can cause significant renal impairment.
**Why Each Wrong Option is Incorrect**
**Option A:** While sepsis is a potential complication of trauma, it is not the most direct consequence of a severe crush injury. Sepsis would be a secondary complication rather than a direct result of the injury.
**Option B:** Hemorrhagic shock is a possible complication of trauma, but it is not the most likely outcome in this scenario. The patient's kidneys are more likely to be affected by the crush injury than their cardiovascular system.
**Option C:** Hypothermia is not a direct consequence of a severe crush injury. While the patient may be at risk of hypothermia, it is not the most likely outcome in this scenario.
**Clinical Pearl / High-Yield Fact**
The "6 Ps" of rhabdomyolysis are: Pain, Pallor, Paresthesias, Paralysis, Pulselessness, and Poikilothermia (hypothermia). Remembering these symptoms can help you identify patients at risk of developing rhabdomyolysis.
**Correct Answer:** D. Acute kidney injury