On Call & Desaturating: What Every Intern Must Do First

🚨 What to do when your patient desaturates —

A step-by-step on-call guide for interns & house officers

Walking into a patient’s room and seeing the saturation drop is one of the most stressful moments for a new doctor. This PDF gives you a clear, evidence-based sequence so you don’t freeze under pressure.

✅ Immediate actions

✅ How to choose the right O₂ device & flow rates

✅ Target SpO₂ ranges

✅ Quick bedside exam & how to spot reversible causes

✅ When and how to escalate to ICU

✅ Investigations in the right order

✅ Mnemonic CHECK-O₂ for recall during call shifts

✅ Printable format — keep it on your phone, tablet, or pocket folder

⚠️ Disclaimer

This guide is for educational purposes only. It does not replace your hospital protocols or senior guidance, and is not medical advice.

✨ Perfect for:

• Final-year medical students
• New interns / house officers
• Residents who want a quick structured refresher

📌 Download it, save it, and carry calm into your next night on call.