Satyendra Dhar, MD @DharSaty · 3 weeks ago
x.com
Pulse oximetry and Capnography: Essential tools for monitoring respiratory health, but they serve different purposes: Pulse Oximetry: Measures
x.com 
Pulse oximetry and Capnography:

Essential tools for monitoring respiratory health, but they serve different purposes:

Pulse Oximetry: 
Measures blood oxygen saturation (SpO₂) and pulse rate. 
Normal SpO₂ is 95–100%. 
It’s useful for tracking oxygenation but may delay detecting ventilation issues.

Capnography: 
Monitors exhaled CO₂ (EtCO₂) and respiratory rate. 
Normal EtCO₂ is 35–45 mmHg. 
It detects ventilation problems faster and provides real-time updates.

While SpO2 monitors oxygenation (often delayed), EtCO2 measures metabolic perfusion and ventilation. 

Continuous capnography detects almost 6 times more potential respiratory events than SpO2 alone.

#EtCo2 #SpO2 #Pulseoximetry #Capnography #ventilation #respiratory #oxygenation #ICU #respiratoryarrest #codelue #CPR
Satyendra Dhar, MD @DharSaty · 3 weeks ago
Hospital Medicine Clinical Assistant Professor The content and images on this website are provided for educational and informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. The views expressed are those of the authors and do not necessarily reflect those of any affiliated institutions. While efforts are made to ensure accuracy and currency, medical knowledge is continually evolving, and errors or omissions may occur. Users are advised to independently verify information and seek guidance from qualified healthcare professionals for any medical decisions. By using this website, you acknowledge responsibility for your own clinical judgments, and the website and its contributors disclaim any liability arising from the use of its content. 👉 Follow 'Medical Infographics' on 👉 https://www.DharSaty.com
Related images