En glish

14 – Ultrasound scanning modes


Normally B-mode is sufficient when performing FLUS

Other modalities such as M-mode or colour Doppler can be used in some cases where there is doubt whether lung sliding is present or not (see section on pneumothorax)

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M-mode scanning of pleura with seashore sign

13 – Patient position


Some patients with respiratory emergencies can not be placed in a supine position due to dyspnoea

Anterior, lateral and posterior surfaces are then scanned with the patient in the sitting position

In comparison, some critically ill patients may not be able to sit up for the assessment of the posterior zones

The posterior surfaces can then either be scanned with the patient lying on the side or alternatively the transducer can be inserted in between the mattress and the patient making it possible to scan at least a part of the posterior surface

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Image showing a microconvex transducer placed in zone 6R, with the patient lying on the side

11 – FLUS examination technique


With the patient in the supine position the transducer is quickly placed in each of the scanning squares

The transducer is placed in a longitudinal axis over an intercostal space

In each square it is noted whether pneumothorax, pleural effusion or multiple B-lines are present or whether only normal findings are present

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Image showing a microconvex transducer placed in zone 2L.