It is the eleventh-leading cause of adult deaths worldwide, and it results in 1.16 million deaths per year ( 9). As the most common cause of PH, liver cirrhosis is a significant cause of global health burden. However, when PPG increases to ≥10 mmHg, PH complications are more likely to occur, such as the formation of varices related to upper digestive bleeding, ascites, infection, hepatic encephalopathy, or renal failure ( 7, 8). When the value of PPG is in the range of 5–9 mmHg, it represents subclinical PH ( 6). Table 1 Classification of portal hypertension Other less common causes of PH account for less than 10% of cases, mostly due to vascular liver diseases such as extrahepatic portal vein occlusion (Budd-Chiari Syndrome) and idiopathic PH ( 4, 5). Among the aforementioned diseases related to PH liver cirrhosis is the leading cause of PH worldwide. Based on the anatomical location of the increased resistance to blood flow within liver circulation, PH can be classified into three types: pre-hepatic PH, intra-hepatic PH, and post-hepatic PH ( Table 1). The relationship can be given by Ohm’s law as follows:īased on Ohm’s law, the increased PVP is attributed to an increased portal vein blood flow, an increased vascular resistance, or a combination of both ( 3). It is caused by the interaction of the portal blood flow with the vascular resistance against the flow ( 2). Measuring the hepatic perfusion pressure, PPG is the difference between the portal vein pressure (PVP) and hepatic vein pressure or inferior vena cava (IVC) pressures. Portal hypertension (PH), a severe symptom of chronic liver diseases, is defined as a pathologically increased portal pressure gradient (PPG) greater than 5 mmHg ( 1). Keywords: Portal pressure monitoring portal pressure hepatic venous pressure gradient (HVPG) invasive noninvasive The advantages and limitations of various techniques for future research are also discussed.
![743 mmhg to atm 743 mmhg to atm](https://img.homeworklib.com/questions/67269c60-288d-11ea-9add-d178f1455634.png)
In this study, we focused on both invasive and noninvasive methods for portal pressure monitoring and explored their roles in clinical setting. Over the past decade, noninvasive methods aimed at monitoring the portal pressure have been increasingly investigated, including serum markers, radiological features, ultrasound elastography, doppler and contrast-enhanced ultrasonography. The hepatic venous pressure gradient measurement, a gold-standard method applied to monitor portal pressure, is invasive and only available in experienced centers. As a result, portal pressure monitoring has important prognostic and clinical implications. So we would convert that using the conversion factor, and that's able to 0.Abstract: Portal hypertension is a serious symptom of chronic liver diseases, which can lead to many critical complications, such as the formation of varices related to upper digestive bleeding, ascites, infection, hepatic encephalopathy, renal failure, and even death.
![743 mmhg to atm 743 mmhg to atm](https://prealliance-textbook-qa.oneclass.com/qa_images/homework_help/question/qa_images/119/11930600.jpeg)
![743 mmhg to atm 743 mmhg to atm](https://scrn-cdn.omnicalculator.com/conversion/torr-to-atm@2.png)
So a good rule of thumb is that it wants the answer in HTM. And the problem gave us the pressure outside any tam. And that's equal to 493 millimeter mercury. So the pressure inside the bull, which is over trying to solve for, is equal to the pressure outside, which is 776 minus 283. And so now we can just do this equation that we talked about earlier.
![743 mmhg to atm 743 mmhg to atm](https://cdn.numerade.com/previews/a4ea4635-e602-4629-a2d8-e0bcd659ad6c.gif)
Mullah mirrors Mercury, which is equal to 776 millimeter work here. There's one centimeter is equal to 10 millimeters and this is mercury, and so this is equal to 283 millimeter mercury, and then we need to convert this into millimeters mercury and one HTM is equal to 700 760. So to do that, we'll just dio a conversion factor. And so it tells us the height is 28.3 centimeters, so we need to get that into millimeters because it's Mark three filled. And whenever you get these sorts of problems, you need to know this equation that the pressure of the bulb, which is this the pressure of the the gas and the container is equal to the pressure outside, minus the pressure of the Manama and home Nam Manama, Nor works, is that it tells you the difference in height of the links of arms, and that helps you figure out the pressure inside this part. It also tells us that the pressure outside is one points your 2118. Mercury gas filled open and phenomena, and it tells us that this side of the gas this side is 28.3 centimeters higher than this side.