The Effect of Bedside Chest Radiograph in the Diagnosis and Follow‑Up of Severe and Critical COVID‑19/ 重型和危重型新型冠状病毒肺炎患者床边胸部X线平片表现及其在随访中的作用

Objective To explore the value of bedside chest radiograph in the diagnosis and follow up of severe and critical COVID 19 Methods Twenty nine patients with severe or critical COVID 19 were collected from January 23 to February 23, 2020, from four COVID 19 designated hospitals in Guangdong Province Bedside radiography was taken in all the 29 patients, ranged from 1 to 16 times for each patient Twenty seven patients underwent follow up, and the number of re examination ranged 1 to 15 times, and the interval of review is 1 to 8 days The imaging findings of bedside chest radiography and the imaging changes on follow up chest radiography were analyzed retrospectively Results Twenty nine patients were collected The radiography showed the lesions involved all more than 3 lung fields The films showed consolidation shadow in 19 cases, multiple patches of shadow in 23 cases, reticular pattern in 12 cases, strips shadow in 14 cases, interlobar fissure thickening in 18 cases, and "white lung" in 4 cases The complications included pleural effusion in 4 cases, pneumothorax in 2 cases, mediastinal and subcutaneous emphysema in 1 case The radiography showed the lesions progressed in 15 cases, with expanded involvement of the lung The increase of lesion density was found in 6 cases, new lesions were noted in 5 cases, while both of them were found in 4 cases Nine cases showed improvement, with reduced range and decreased density Patchy or consolidation shadow turned to strips shadow or articular pattern shadow in 8 cases There was no significant change in 3 cases with large consolidation shadow Conclusions Bedside chest radiography has a good value in the follow up of severely and critically ill patients with COVID 19, and can provide great help for clinicians to evaluate their condition