A patient was operated for right upper lobe resection. He was shifted to post awakening recovery after completion of surgery with vitals- BP 100/70 mm of Hg, HR – 94bpm, SPO2 100. After 2 hrs when he was assessed ,his vitals was BP 70/50 mm of Hg. HR-126 bpm ,SPO2 92 and surgical drain was filled with blood. Immediate re-exploration was planned. IV anaesthetic agent of choice –

**Core Concept**
The question tests the concept of managing a patient with suspected postoperative hemorrhage, specifically the choice of intravenous anesthetic agent for immediate re-exploration. Postoperative hemorrhage is a life-threatening complication that requires prompt intervention, including control of the airway and maintenance of hemodynamic stability.

**Why the Correct Answer is Right**
The correct answer is **Ketamine**, which is the preferred choice for immediate re-exploration in a hemodynamically unstable patient. Ketamine provides good analgesia and anesthesia without significant depression of the cardiovascular system, making it ideal for patients with suspected hemorrhage. Ketamine also has a sympathomimetic effect, which can help to maintain blood pressure.

**Why Each Wrong Option is Incorrect**
* **Option A:** **Propofol** is a good choice for sedation and anesthesia, but it can cause significant hypotension and respiratory depression, making it less suitable for a hemodynamically unstable patient.
* **Option B:** **Midazolam** is a benzodiazepine that provides sedation and anxiolysis but does not provide adequate anesthesia for surgical re-exploration.
* **Option C:** **Fentanyl** is a potent opioid analgesic, but it can cause respiratory depression and hypotension, making it less suitable for a patient requiring immediate re-exploration.

**Clinical Pearl / High-Yield Fact**
Remember the "Ketamine Kid" principle: Ketamine is the preferred choice for managing pediatric patients with trauma or suspected hemorrhage due to its ability to maintain cardiovascular stability and provide good analgesia.

**Correct Answer:** C. Ketamine

✓ Correct Answer: A. Ketamine