View clinical trials related to Portal Hypertension.
Filter by:Portal hypertension is characterised by an increased portal pressure gradient (PPG), that is the difference in pressure between the portal vein and the inferior vena cava (IVC). Portal hypertension is a consequence of cirrhosis resulting from chronic hepatitis. Patients with portal hypertension are at risk of developing complications including oesophageal or gastric varices, variceal bleeding, ascites, spontaneous bacterial peritonitis, hepatic encephalopathy and mortality. Albeit its clinical significance, direct measurement of portal venous pressure to document portal hypertension has traditionally been difficult. The portal vein pressure can be measured by transhepatic or transvenous methods but the procedure carries a risk of intra-peritoneal bleeding. Furthermore, the IVC pressure measurement requires further transjugular catheterisation. Hence, the technique is rarely used. Currently, the gold standard in measurement of portal hypertension is via measurement hepatic venous pressure gradient (HVPG). The HVPG has been shown to correlate with risk of clinical decompensation, development of varices, hepatocellular carcinoma, variceal bleeding, spontaneous bacterial peritonitis and mortality. Nevertheless, the technique has a low acceptance rate amongst patients and it may not be available even in tertiary medical centres. Recently, the use of EUS-guided approach for measurement of portal pressure gradient (PPGM) has been shown to be feasible. The technical success rate was 100% and no adverse events were reported. Measurements obtained with the EUS approach was shown to correlate excellently with clinical parameters of portal hypertension including presence of varices, portal hypertensive gastropathy and thrombocytopenia. Furthermore, the procedure could be performed at the same time of screening oesophagogastroduodenoscopy (OGD), that is frequently required for variceal screening in this group of patients. Hence, the aim of the current study is to investigate the feasibility of EUS-PPGM and correlate the risk of developing complications with the PPGM in patients that are suffering from chronic hepatitis.
Prospective, observational study to define precipitants and predictors of development of Acute-on-Chronic Liver Failure (ACLF) after surgical interventions, allowing to develop a risk stratification for elective procedures in cirrhotic patients. As well as identifying molecular mechanisms of post-interventional ACLF and thus preparing the ground for development of new therapeutic approaches.
Evaluation of non-invasive prognostic parameters in patients receiving transjugular intrahepatic portosystemic shunt (TIPS) for complications of portal hypertension. Patients are cared according to the local standardized follow up program. Clinical and laboratory data from standard patient care are evaluated for potential prognostic value.
Liver cirrhosis with the further development of portal hypertension implies structural and vasculature alteration in the portosplenic circulation. Esophagogastroduodenoscopy is the standard of care for the detection and treatment of esophageal varices, as esophageal varices serve as a surrogate for estimating a portal pressure gradient > 10 mmHG. Endoscopic ultrasound evaluation allows the detection of peri-esophageal collateral veins, perforating veins and para-esophageal collateral veins, which has demonstrated to be effective for the prediction of esophageal varices recurrence after variceal eradication. The investigators aimed to compare esophagogastroduodenoscopy versus endoscopic ultrasound evaluation for the early diagnosis of portal hypertension in cirrhotic patients.
Gastroesophageal varices are a complication of portal hypertension in cirrhosis.Endoscopy is an unsatisfactory screening test.In this prospective clinical study,we will enroll patients with cirrhosis of various causes, all of whom undergo laboratory tests, elastography, and serum proteomic differential protein testing, including liver elastography (LSM) and spleen elastography (SSM). Baveno VI or expanded BavenoVI criteria are validated by comparing patients' LSM, SSM, serum differential protein, platelet count, and EGD data to evaluate the clinical value of SSM and differential proteins in excluding cirrhosis of cirrhosis.At the same time, based on SSM and serum differential protein, a new predictive model of variceal varices will be established to evaluate the diagnostic value of SSM and differential protein for esophagogastric varices, and a non-invasive method for reliably predicting and evaluating cirrhosis with esophageal varices will be found.
A total of 130 patients with liver cirrhosis who fulfill the criteria of the study, and who have been found to have left ventricular diastolic dysfunction on a screening 2D echocardiography, will then be randomized by Block randomization technique, to two arms in a ratio 1:1(Group A) will receive carvedilol+ Ivabradine targeted therapy for heart rate reduction while Group B will receive Carvedilol alone; and the dosage of drug in the treatment arm will be titrated every week to achieve target heart rate of 50-60/ minute. Patients in the treatment arms, who are unable to tolerate carvedilol due to hypotension episodes, will be offered ivabradine alone to allow achievement of targeted heart rate reduction. All patients will be evaluated at 0,6, and 12 months. The end points will be clinical events, cardiac function improvement, renal function, and mortality.
Rationale: Hepatic encephalopathy (HE) is a major and common complication in patients with liver cirrhosis. HE can be classified in the extensive range of neurocognitive deterioration as minimal HE (MHE), covert HE (grade I), or overt HE (OHE, grade II-IV). Liver cirrhosis is the most common cause of portal hypertension (PH). Patients who develop complications of PH, like variceal bleeding or refractory ascites, can benefit from a Transjugular Intrahepatic Portosystemic Shunt (TIPS) placement. Unfortunately, post-TIPS HE is a common and often severe complication. Incidence of new onset or worsening of HE after TIPS is approximately 20-45%. Currently there is no strategy to prevent post-TIPS HE.
Through a multicenter randomized controlled trial of TIPS to prevent post-hepatitis B cirrhosis of esophagogastric varices, the incidence of hepatic encephalopathy, the rate of stent patency, the incidence of rebleeding and survival in the left and right branches of the portal vein were compared.
The development of portal hypertension is a vital event in the natural progression of cirrhosis and is associated with severe complications including gastroesophageal varices bleeding. Cirrhotic patients with hemorrhagic shock and/or liver failure caused by variceal bleeding face a mortality of 5-20%. Hepatic venous pressure gradient (HVPG) is the recommended golden standard for portal pressure assessment globally with favorable consistency and repeatability. Reducing the HVPG to levels of 12mmHg or below is associated with protection of variceal hemorrhage. An HVPG> 16mmHg indicates a higher risk of death and HVPG ≥ 20mmHg predicts failure to control bleeding, early rebleeding, and death during acute variceal hemorrhage. The management of portal hypertension has showed a trend of diversification with the development of medication, endoscopy, radiological intervention and liver transplantation. Although medication and endoscopic therapy have achieved preferable effects and are recommended as standard of care for the prevention of variceal rebleeding, patients with HVPG≥ 16mmHg still have a high risk of treatment failure and a high rate of rebleeding. Recent years, early TIPS is recommended as the first-line therapy for the prevention of rebleeding in cirrhotic patients with HVPG≥ 20mmHg. However, for those with HVPG values between 16 to 20mmHg, there is still lack of strong evidence to demonstrate the best practice for the management. With the rapid advancement of laparoscopic device and technique, the utility of laparoscopic splenectomy and pericardial devascularization showed less surgical trauma, bleeding and complications while retaining dependable effects compared to traditional open surgery, especially for portal hypertension with hypersplenism. In the study, the investigators aim to conduct a multicenter randomized controlled trial to compare the safety and effectiveness of HVPG-guided (16 to 20mmHg) laparoscopic versus endoscopic therapy for variceal rebleeding in patients with portal hypertension.
Patients with hepatic cirrhosis and previous variceal bleeding will be randomly assigned to use propranolol or carvedilol. After 8 weeks, rosuvastatin or placebo will be blindly added to nonresponders (HVPG measurement > 12mmHg) for another 8 weeks and hemodynamic response will be assessed again. Surrogate serum markers of portal hypertension will be evaluated and correlated to HVPG values and to its variations.