You got it all mixed up. This is a play on words. Pulmonary hypertension cannot be measured with a tonometer on the shoulder.
Renal hypertension
Many people have consistently high blood pressure. From this they have heart attacks, strokes and other unpleasant things.
In about 95% of cases, there is no clear reason for such an increase in pressure. This is our human characteristic.
But somewhere in 5% of cases, you can find the reason. Kidney disease is one such reason. If blood pressure has become constantly elevated due to the kidneys, then such hypertension is called renal hypertension. This hypertension can be measured with a conventional tonometer on the shoulder.
The kidneys remove excess water and salt from our body. If they get sick and do not do it, then the water and salt will linger and blood pressure will rise.
In fact, it is enough not even to spoil the kidneys themselves, but simply to slightly restrict their blood flow. That is, if the renal artery is pinched by something there, then renal hypertension will result.
Inside the kidneys there is a whole system of hormones that regulate blood pressure.
On the one hand, renal hypertension is very aggressive and difficult to treat.
On the other hand, if you are very lucky, there will be some specific problem in the kidneys that can be corrected. Then everything will be normalized.
In the case of our usual hypertension, when there is no obvious reason, there is nothing to fix either. It's sad.
It was about the kidneys.
Pulmonary hypertension
And here there will already be a play on words. This is not the same hypertension. Pulmonary hypertension is rare. It cannot be measured with a tonometer on the shoulder, because it lives in the arteries of the lungs. In a small circle of blood circulation.
There are even more reasons for pulmonary hypertension than for renal hypertension. It is difficult for the heart to push blood through narrowed arteries in the lungs, and heart failure slowly develops. Shortness of breath, weakness on exertion, fluid in the abdomen, everything.
In short, pulmonary and renal are two different diseases.
