Nice ChatGPT conversation about normal pressures in the IJV

General Research Papers
1

Hi friends,

I just had again a nice conversation with the chatbot ChatGPT about pressures inside IJV. I think it is meanwhile nicer and more refreshing to talk to chatbot than to most doctors.
Last Neuroradiologist stated that 17mmHg is within the normal range. But my research and the of chatbot showed different. So I thought I don’t deprive you from my nice conversation with ChatGPT:

"There are several studies that have investigated the normal pressure in the internal jugular veins. Here are some examples:

  1. Study on the Normal Pressure of the Internal Jugular Vein in Man (1930) - This early study by J.A. Hackett and A.W. Roach examined the normal pressure in the internal jugular veins of healthy men in the supine position. They found that the average pressure was around 7 mmHg.

  2. Intracranial Pressure, Internal Jugular Pressure and Cerebrospinal Fluid Pressure in Man (1951) - In this study by E.C. Rehncrona and H. Siesjö, measurements of pressure in the internal jugular veins were conducted in humans. They found that venous pressure ranged from 4 to 8 mmHg.

  3. Relationship between Jugular Venous Pressure and Central Venous Pressure (1979) - This study by J. McGraw et al. examined the relationship between pressure in the internal jugular veins and central venous pressure in patients in the supine position. They found that jugular venous pressure was typically about 3 to 10 mmHg higher than central venous pressure.

  4. The Relationship between Internal Jugular Vein Pressure and Central Venous Pressure (2017) - In this study by K. Mori et al., pressure measurements in the internal jugular veins and central veins were compared in patients in different body positions. They found that jugular venous pressure was, on average, about 5 mmHg higher than central venous pressure in the supine position.

It’s important to note that these studies represent just a selection from the extensive research on the topic. There are additional investigations and clinical observations describing the normal pressure in the internal jugular veins. However, the exact values may vary depending on the study and individual differences."

5 Likes
2

@TheDude good one but I think the pressure measurement has to be taken with a caution as it does not always correlate to the severity of symptoms.

Remember the 17 year old in this video (Venous Compression Syndromes: From Diagnosis to Treatment - YouTube) around the 14th minute mark. Well she had a pressure gradient of 3 mmHG across the right dominant Jugular Vein narrowing. You would think 3 mmhg is small gradient but it was enough to cause her paralysis of all four limps (Quadraparesis). I also happen to have 3 mmHG across the narrowing of my dominant left IJV but do not have paralysis.

Screenshot images from the video to show the pressure gradient and right IJV stenosis at the C1/Styloid level.

image
image1302×730 112 KB

image
image1288×721 112 KB

4 Likes
3

Yes I was just told by Queens Sq that IJV pressures on left (16 to 18) and right 18-19 were viewed as “normal”. Even my right sigmoid sinus at 20 was “in the normal range of 0 to 20”. In my case my right styloid has not been removed to skull base as promised, so pressures in right side of brain are higher than left side on latest Venogram, with a pressure gradient of 1 in transverse sinus. (they only stent if gradient is 8 or higher). Hoping revision surgery may help but there is nothing “normal” about the high pressures inside my skull every day. thanks for sharing. agree talking to medics can be very tiresome. D

2 Likes