Introduction: The COVID-19 pandemic originated in China and within about 4 months affected individuals all over the world . One of the limitations to the management of the COVID-19 is the diagnostic imaging to evaluate lung impairment and the patients ’ clinical evolution, mainly, in more severe cases that require admission into the intensive care unit . Among image examinations, lung ultrasound (LU) might be a useful tool to employ in the treatment of such patients .
Methods: A survey was carried out on PubMed to locate studies using the descriptors: (( Lung ultrasound OR ultrasound OR lung ultrasonography OR lung US) AND (coronavirus disease-19 OR coronavirus disease OR corona virus OR COVID-19 OR COVID19 OR SARS-CoV-2) ). The period covered by the search was December 2019 and October 2020 and the papers selected reported LU in COVID-19 .
Results: Forty-three studies were selected to produce this systematic review . The main LU findings referred to the presence of focal, multifocal and/or confluent B lines and the presence of pleural irregularities .
Conclusions: The use of LU in the evaluation of COVID-19 should be encouraged due to its intrinsic characteristics; a low cost, radiation free, practical method, with easy to sanitize equipment, which facilitates structural evaluation of lung damage caused by SARS-CoV-2 . With the increase in the number of studies and the use of ultrasound scans, LU has been shown as a useful tool to evaluate progression, therapeutic response and follow-up of pulmonary disease in the COVID-19.