If we're going to identify for this anterior decompression, the first thing that you want to be able to find is where the true midclavicular point is. So we identify this by finding the sternal notch coming either to the left or to the right, right into this little groove known as the sternoclavicular joint.

I will then identify the clavicle, it comes all the way out to this drop-off point, kind of where the shoulder is. That's the acromion clavicular. Now, halfway between the two, this gives me my midclavicular line.

I see people, the mistake they're making is they're thinking that the clavicle ends here, but you actually have to trace that thing all the way to the end.

So now we want to find out where is that second intercostal space. Where I'm going down the sternum, there's a little speed bump, known as the angle of Louis. Once I find that little speed bump, I'm just gonna correspond where my fingertips lie. This is going to put you to your second intercostal space.

Commonly, it's taught that you always have to be left of the nipple. If I'm taking a look at midline and I see the middle, and I go nipple to the left. Going to miss the chest completely. We're taught, stay lateral of the nipple. In this case, we'll never get into the chest. So you’ve got to go off the clavicle and not where the nipple's at.