Prepare for the Prehospital Trauma Life Support (PHTLS) exam. Access diverse quizzes and multiple-choice questions, each with hints and comprehensive explanations. Enhance your readiness and confidence for the PHTLS certification exam!

Multiple Choice

What SpO2 range should you target after initial oxygen therapy in a trauma patient?

After initial oxygen therapy, aim to keep SpO2 in the high-normal range to ensure adequate tissue oxygenation without causing oxygen toxicity. The best target is 94-98%. This level provides enough arterial oxygen content for injured tissues while avoiding the risks associated with breathing 100% oxygen, such as vasoconstriction and oxidative stress. Saturations in the low 80s or below indicate hypoxemia, and 92-94% is typically not as protective as 94-98% in trauma. Adjust FiO2 to maintain this target as the patient’s condition evolves.

After initial oxygen therapy, aim to keep SpO2 in the high-normal range to ensure adequate tissue oxygenation without causing oxygen toxicity. The best target is 94-98%. This level provides enough arterial oxygen content for injured tissues while avoiding the risks associated with breathing 100% oxygen, such as vasoconstriction and oxidative stress. Saturations in the low 80s or below indicate hypoxemia, and 92-94% is typically not as protective as 94-98% in trauma. Adjust FiO2 to maintain this target as the patient’s condition evolves.