Lung pulse shown by transducer placed on right and left anterolateral chest walls. Notice how the pleural line demonstrates somewhat of a vertical deflection, as opposed to the typical horizontal movement of normal lung sliding. Due to its closer proximity to the pulsating heart, the left-sided pleura shows larger-amplitude deflections than on the right.
When unilateral, it can help detect endobronchial mainstem intubation or obstruction. 
 - Stephen Alerhand @SAlerhand


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