Team what's happening we're back Zach here from med geeks

So today I'd like to talk about pulmonary hypertension a topic most people find dull and

boring but I actually find it quite interesting. I actually wrote a PA

medical review paper on the topic. So before you plan on hitting the pause button, reconsider

because this topic is on the boards. I mean honestly can you tell me all the five groups of pulmonary hypertension without having to look them up?

So what is pulmonary hypertension?

Well, it's essentially increased pulmonary artery pressure.

Experts consensus defines pH,

pulmonary hypertension, as mean pulmonary arterial pressure greater than or equal to 25

millimeters of mercury at rest as measured by right heart cath.

Pulmonary capillary wedge pressure can be measured

and this helps differentiate between group one and group two.

But what is the wedge pressure?

So the wedge pressure is measured by putting a catheter into the small branch of the pulmonary artery, so a swans gan, and you blow up this balloon and it senses the pressure and it's an estimate of the left ventricular and

Diastolic pressure or the preload of the left ventricle.

So if the wedge pressure is up or elevated then it tells you that there are quote

unquote high filling pressures or likely left-sided heart failure. You'll understand why I just explained this in a second.

So pulmonary hypertension is broken down into five categories.

You have group one, which is classified it as pulmonary arterial hypertension.

Remember, there's a difference between pulmonary hypertension and pulmonary arterial hypertension.

So pulmonary hypertension is the umbrella term for all groups and then a pulmonary arterial hypertension is group one.

So this includes things that are idiopathic, heritable, drug and toxin

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