An observational study to evaluate the correlation between CO-RADS grading and SPO2 (oxygen saturation percentage) in patients undergoing chest computer tomography

Abstract

Background:The  CO-RADS grading is advocated to know the level suspicion of COVID-19 by looking at specific radiological features  which are more specific for COVID-19.  More the score ,more probability of having infected with COVID-19.Since this is primarily a respiratory disease measurement of SPO2 has become important parameter to monitor. But all patients with COVID -19 do not suffer with pulmonary parenchymal involvement. This study is aimed to evaluate any correlation exists between CORADS SCORING which is used for diagnosis in COVID-19  and SPO2 monitoring also used in COVID-19. Aims:This study will be conducted to determine whether a correlation exists between CO-RADS GRADES and Oxygen Saturation percentage SPO2. Materials and methods:In this Prospective Observational Study in 100 adult patients(age >18 yrs) who undergo CT scan. Adults (age >18 yrs) who are RT-PCR negative for COVID 19. symptoms, duration of symptoms, co-morbid conditions of patients undergoing chest CT scan to be recorded. SPO2noted along with CO-RADS grading. It will be Observational study of a sample size of 100 patients randomly selected chest CT scans obtained in a group of consecutive patients presenting to the emergency ward with suspected SARS-CoV-2 infection, in whom RT-PCR was performed. In these patients symptoms, duration of symptoms, co-morbid conditions of patients, SPO2noted along with CO-RADS grading. Results:Oxygen saturation is decreased with increase in age. It is less in subjects >60 years of age.Oxygen saturation in patients with CORAD-2(mean of 89% with range 65-99%) is significantly decreased when compared other groups. Oxygen saturation in patients with CORAD-4 mean of 91% with range 80-99% followed by Oxygen saturation in patients with CORAD-5 mean of 92% with range 76-98%, Oxygen saturation in patients with CORAD-3 mean of 93% with range 73-99% and Oxygen saturation in patients with CORAD-1 mean of 94% with range 81-99%. Conclusion:Reporting and Data System   (CO-RADS) grading and Oxygen saturation percentage(SPO2) both does not correlate with each other .