How to perform lung ultrasound in pregnant women with suspec
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Under certain circumstances, such as during the current COVID-19 outbreak, pregnant women can be a target for respiratory infection, and lung examination may be required as part of their clinical evaluation, ideally while avoiding exposure to radiation. As such, a radiation-free point-of-care diagnostic tool, such as ultrasound examination, would be particularly useful for assessing the lungs of pregnant women.

Obstetricians/gynecologists represent a category of clinicians who use ultrasound in routine practice. Bearing in mind that lung ultrasound examination has been employed traditionally by non-radiologists as an adjunctive clinical instrument, from a technical point of view, it would be feasible for an obstetrician to examine the lungs following an obstetric ultrasound evaluation if only to ascertain the presence or absence of normality and determine the need for further specialist care.

The current gold standard for the etiological diagnosis of COVID-19 disease is the analysis of respiratory tract specimens by (real-time) reverse transcription-polymerase chain reaction. However, this test has a high false-negative rate, due to both nasopharyngeal swab sampling error, which often requires repeat sampling, and viral burden. Some patients present late for testing and can cause the spread of the disease because of delays in diagnosis. Imaging tools able to diagnose pneumonia at an early stage are thus of fundamental importance. Currently, high-resolution computed tomography is the main tool for primary diagnosis and evaluation of disease severity in patients affected by COVID-19. However, the use of ultrasound to identify specific sonographic characteristics that are diagnostic of pneumonia infection has been reported, as have the typical ultrasound findings of COVID-19 disease in the lungs of pregnant women.

A practical approach for obstetricians/gynecologists to perform a lung ultrasound examination, and practical aspects, which could be of particular importance in emergency situations, such as the current pandemic infection of COVID-19 is shown in the attached posters.

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