What does "H" stand for in P-MARCH-P?

In the context of P-MARCH-P, the "H" stands for "Hypoxia." This acronym is designed to help remember the key steps in managing a casualty through the Tactical Combat Casualty Care (TCCC) process, focusing on critical interventions.

Hypoxia refers to a deficiency in the amount of oxygen reaching the tissues, which can occur in combat and emergency situations due to various factors, such as respiratory distress or injury. Addressing hypoxia is crucial because adequate oxygenation is vital for cellular function and survival. By identifying and managing hypoxia, you can improve the casualty's chances of recovery, especially in life-threatening situations.

The other options, while relevant to trauma management, do not align with what the "H" in P-MARCH-P specifically represents. Understanding this can significantly impact the care provided during tactical and emergency medical situations.