IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-10-5-35317 Original Research Paper Correlation of venous blood gas and pulse oximetry with arterial blood gas in critically ill patients Col (Dr) Sritam Mohanty Dr. Lt Col (Dr) Jyoti Kumar Sinha Dr. May 2021 10 5 01 02