CAPNOGRAPHY 
Provides a measure of ventilation – or concentration of CO2 exhaled air (aka end tidal CO2 or etCO2).
Not affected by supplemental oxygen.
Reflects breath-to-breath ventilation.
Appear not normal if the patient has stopped breathing.
Apnea or hypoventilation is detected immediately by capnography.

PULSE OXIMETRY 
Measures oxygenation or arterial blood oxygen saturation & pulse rate.
Detects oxygen deficiency (hypoxia).
May appear normal even if the patient has stopped breathing.
Takes time to detect Apnea or hypoventilation.

#EtCO2 #Capnography #curarecleft #hypoventilation #hyperventilation #apnea
Satyendra Dhar, MD @DharSaty · 2 years 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
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