First right
intercostal space
Second left
intercostal space
(pulmonic)
Third left
intercostal space
(Erb’s point)
Fourth left
intercostal space
Apex
First left
intercostal space
Tracheal Site
Posterior Lung Sites
Anterior Heart and Lung Sites
(lower left
sternum)
Second right
intercostal space
(aortic)
Midaxillary
Lower anterior
4
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