EMR Chapter 25-MCIT-F3-1209 | After The Rhythm Returns:  After  the heart and the brain it supplies, have been through significant trauma, the body just doesn’t bounce back to normal, just because it was shocked into rhythm. This chapter provides specific goals to work toward, concrete interventions that an EMR can immediately apply and help understand why what is done in the first few minutes after rosc which determines a patients survival.

The lessons covered are

• Lesson 1: Understanding Post-rosc Instability
• Lesson 2: The Five Norms: What EMRs Need to Know
• Lesson 3: Immediate EMR Interventions, and,
• Lesson 4: Critical Communication and Handoff

Excerpt from EMR Chapter 25-MCIT-F3-1209 | After The Rhythm Returns

Now, let’s get practical about how you actually achieve normoxia in the field. Here’s your step-by-step approach.

Start with high-flow oxygen—typically a non-rebreather mask at 15 liters per minute. If they’re not breathing adequately on their own, you’re using your BVM to ventilate them. Don’t worry about overtreating at this point; you’re about to titrate down if needed.

Within the first 60 seconds, get that pulse oximeter reading. Once you know where you are, you can adjust. If you see 100% or 99%, you’re giving too much oxygen, just titrate down. Maybe switch from a non-rebreather to a nasal cannula at 4 to 6 liters. If you’re seeing 92% or lower, you need to increase oxygen delivery.

Here’s the key: this isn’t a one-time decision. You’re reassessing every 2 to 3 minutes because post-rosc patients’ oxygen needs change rapidly. A patient who needed 15 liters per minute five minutes ago might only need 4 liters now. Or vice versa. You’re constantly adjusting based on what you see on that monitor.