.5-.8 puncture obliquely towards the lateral aspect

To avoid injuring the lung, never punture deeply towards the medial aspect

 deep perpendicular or oblique needling can cause pneumothorax

.5 - .8 puncture obliquely towards the lateral aspect

To avoid injuring the lung, never puncture deeply towards the medial aspect

deep perpendicular or oblique needling can cause a pneumothorax

.5 -1 inch perpendicularly

avoid the cubital vein

.5 - 1 inch obliquely upward

avoid the cephalic vein

.1 - .3 inch perpendicularly

Avoid puncturing the radial artery

.2 - .3 inch perpendicularly

Avoid puncturing the radial artery