Reappraisal of the conventional hemostasis tests as predictors of perioperative bleeding in the era of rebalanced hemostasis in cirrhosis.

New global laboratory procedures mimicking the in vivo hemostasis process led to the changing paradigm of cirrhosis from the prototype of hemorrhagic diseases to a condition in which hemostasis is normal but fragile, thus justifying the hemorrhagic/thrombotic tendencies that affect these patients. The new paradigm was instrumental to change the management of cirrhosis. For example, international guidelines warn against the entrenched practice of testing patients with conventional hemostasis tests and infusing those with abnormalities with fresh-frozen plasma, coagulation factor concentrates, or platelets, prior to surgery/invasive procedures. These recommendations are, however, largely disattended. The practice of testing patients with the prothrombin time or viscoelastometry and using arbitrary cutoffs to make decisions on perioperative prophylaxis is still common and probably driven by medicolegal issues. There is no doubt that prothrombin time and congeners tests are unable to predict bleeding in cirrhosis. However, it cannot be excluded that some tests may be useful in patients who are severely decompensated. Large prospective collaborative studies are warranted. Enrolled patients should be randomized to receive perioperative prophylaxis based on laboratory testing (eg, viscoelastometry, thrombomodulin-modified thrombin generation) or to usual care. However, for these trials to be useful, a third group of patients who do not receive prophylaxis should be included. In conclusion, until results from these studies are available, physicians attending cirrhosis should refrain from using laboratory tests with arbitrary cutoffs to make decision on perioperative prophylaxis. Decision should be made by considering the clinical history of individual patients and the risk of hemorrhage of specific procedures.

Comparing serial and current liver stiffness measurements to predict decompensation in compensated advanced chronic liver disease patients.

BACKGROUND AND AIMS: The utility of serial liver stiffness measurements (LSM) to predict decompensation in patients with compensated advanced chronic liver disease (cACLD) remains unclear. We aimed to validate whether comparing serial LSM is superior to using the current LSM to predict liver-related events (LRE) in patients with cACLD. APPROACH AND RESULTS: In this retrospective analysis of an international registry, patients with cACLD and serial LSM were followed up until index LRE. We compared the performance of both the dynamic LSM changes and the current LSM in predicting LRE using Cox regression analysis, considering time zero of follow-up as the date of latest liver stiffness measurement. In all, 480 patients with cACLD with serial LSM were included from 5 countries. The commonest etiology of cACLD was viral (53%) and MASLD (34%). Over a median follow-up of 68 (IQR: 45 -92) months, 32% experienced a LSM decrease to levels below 10kPa (resolved cACLD) and 5.8% experienced LRE. Resolved cACLD were more likely to be nondiabetic and had better liver function. While a higher value of the current LSM was associated with higher LREs, LSM changes over time (LSM slope) were not associated with LRE. In multivariable Cox regression, neither the prior LSM nor the LSM slope added predictive value to latest liver stiffness measurement. CONCLUSIONS: Once the current LSM is known, previous LSM values do not add to the prediction of LREs in patients with cACLD.

Performance of spleen stiffness measurement to rule out high-risk varices in patients with porto-sinusoidal vascular disorder.

BACKGROUND AND AIMS: Baveno VII consensus suggests that screening endoscopy can be spared in patients with compensated cirrhosis when spleen stiffness measurement (SSM) by vibration-controlled transient elastography (VCTE) is ≤40 kPa as they have a low probability of high-risk varices (HRV). Conversely, screening endoscopy is required in all patients with porto-sinusoidal vascular disorder (PSVD). This study aimed to evaluate the performance of SSM-VCTE to rule out HRV in patients with PSVD and signs of portal hypertension. APPROACH AND RESULTS: We retrospectively included patients with PSVD, ≥1 sign of portal hypertension, without a history of variceal bleeding, who underwent an SSM-VCTE within 2 years before or after an upper endoscopy in 21 VALDIG centers, divided into a derivation and a validation cohort. One hundred fifty-four patients were included in the derivation cohort; 43% had HRV. By multivariable logistic regression analysis, SSM-VCTE >40 kPa and serum bilirubin ≥1 mg/dL were associated with HRV. SSM-VCTE ≤40 kPa combined with bilirubin <1 mg/dL had a sensitivity of 96% to rule out HRV and could spare 38% of screening endoscopies, with 4% of HRV missed, and a 95% negative predictive value. In the validation cohort, including 155 patients, SSM combined with bilirubin could spare 21% of screening endoscopies, with 4% of HRV missed and a 94% negative predictive value. CONCLUSIONS: This study gathering a total of 309 patients with PSVD showed that SSM-VCTE ≤40 kPa combined with bilirubin <1 mg/dL identifies patients with PSVD and portal hypertension with a probability of HRV <5%, in whom screening endoscopy can be spared.

A new clinical and prognostic characterization of the patterns of decompensation of cirrhosis.

BACKGROUND & AIMS: The prognostic impact of acute decompensation (AD), i.e. the development of complications that require hospitalization, has recently been assessed. However, complications of cirrhosis do not necessarily require hospitalization and can develop progressively, as in the recently defined non-acute decompensation (NAD). Nevertheless, there is no data regarding the incidence and prognostic impact of NAD. The aim of the study was to evaluate the incidence and the prognostic impact of NAD and AD in outpatients with cirrhosis. METHODS: A total of 617 outpatients with cirrhosis from two Italian tertiary centers (Padua and Milan) were enrolled from January 2003 to June 2021 and followed prospectively until the end of the study, death or liver transplantation. The complications registered during follow-up were considered as AD if they required hospitalization, or NAD if managed at the outpatient clinic. RESULTS: During follow-up, 154 patients (25.0% of total patients) developed complications, 69 patients (44.8%) developed NAD and 85 (55.2%) developed AD, while 29 patients with NAD (42.0%) developed a further episode of AD during follow-up. Sixty-month survival was significantly higher in patients with no decompensation than in patients with NAD or AD. On multivariable analysis, AD (hazard ratio [HR] 21.07, p <0.001), NAD (HR 7.13, p <0.001), the etiological cure of cirrhosis (HR 0.38, p <0.001) and model for end-stage liver disease score (HR 1.12, p = 0.003) were found to be independent predictors of mortality. CONCLUSIONS: The first decompensation is non-acute in almost 50% of outpatients, though such events are still associated with decreased survival compared to no decompensation. Patients who develop NAD must be treated with extreme care and monitored closely to prevent the development of AD. IMPACT AND IMPLICATIONS: This multicenter study is the first to investigate the role of non-acute decompensation (NAD) in patients with cirrhosis. In fact, while the unfavorable impact of acute decompensation is well known, there is currently a dearth of evidence on NAD, despite it being a common occurrence in clinical practice. Our data show that almost half of decompensations in patients with cirrhosis can be considered NAD and that such events are associated with a higher risk of mortality than no decompensation. This study has important clinical implications because it highlights the need to carefully consider patients who develop NAD, in order to prevent further decompensation and reduce mortality.

Myosteatosis is closely associated with sarcopenia and significantly worse outcomes in patients with cirrhosis.

BACKGROUND & AIMS: Sarcopenia and myosteatosis are common in patients with cirrhosis. This study aimed to determine the prevalence of these muscle changes, their interrelations and their prognostic impact over a 12-month period. METHODS: We conducted a prospective multicentre study involving 433 patients. Sarcopenia and myosteatosis were evaluated using computed tomography scans. The 1-year cumulative incidence of relevant events was assessed by competing risk analysis. We used a Fine-Gray model adjusted for known prognostic factors to evaluate the impact of sarcopenia and myosteatosis on mortality, hospitalization, and liver decompensation. RESULTS: At enrolment, 166 patients presented with isolated myosteatosis, 36 with isolated sarcopenia, 135 with combined sarcopenia and myosteatosis and 96 patients showed no muscle changes. The 1-year cumulative incidence of death in patients with either sarcopenia and myosteatosis (13.8%) or isolated myosteatosis (13.4%) was over twice that of patients without muscle changes (5.2%) or with isolated sarcopenia (5.6%). The adjusted sub-hazard ratio for death in patients with muscle changes was 1.36 (95% CI 0.99-1.86, p = 0.058). The cumulative incidence of hospitalization was significantly higher in patients with combined sarcopenia and myosteatosis than in patients without muscle changes (adjusted sub-hazard ratio 1.18, 95% CI 1.04-1.35). The cumulative incidence of liver decompensation was greater in patients with combined sarcopenia and myosteatosis (p = 0.018) and those with isolated sarcopenia (p = 0.046) than in patients without muscle changes. Lastly, we found a strong correlation of function tests and frailty scores with the presence of muscle changes. CONCLUSIONS: Myosteatosis, whether alone or combined with sarcopenia, is highly prevalent in patients with cirrhosis and is associated with significantly worse outcomes. The prognostic role of sarcopenia should always be evaluated in relation to the presence of myosteatosis. IMPACT AND IMPLICATIONS: This study investigates the prognostic role of muscle changes in patients with cirrhosis. The novelty of this study is its multicentre, prospective nature and the fact that it distinguishes between the impact of individual muscle changes and their combination on prognosis in cirrhosis. This study highlights the prognostic role of myosteatosis, especially when combined with sarcopenia. On the other hand, the relevance of sarcopenia could be mitigated when considered together with myosteatosis. The implication from these findings is that sarcopenia should never be evaluated individually and that myosteatosis may play a dominant role in the prognosis of patients with cirrhosis.

Porto-sinusoidal vascular liver disorder with portal hypertension: Natural History and Long-Term Outcome.

BACKGROUND & AIMS: Current knowledge of the natural history of patients with porto-sinusoidal vascular disorder (PSVD) is derived from small studies. The aim of the present study was to determine natural history and prognostic factors using a large multicenter cohort of PSVD patients. METHODS: Retrospective multicentric study of PSVD patients and signs of portal hypertension (PH) prospectively registered in 27 centers. RESULTS: 587 patients were included, median age of 47 years and 38% were women. Four-hundred and one patient had an associated condition, that was graded as severe in 157. Median follow-up was 68 months. At diagnosis, 64% of patients were asymptomatic while 36% had a PH-related complication: PH-related bleeding in 112 patients; ascites in 117 and hepatic encephalopathy in 11. In those not presenting with bleeding, the incidence of first bleeding was of 15% at 5 years, with a 5-year rebleeding rate of 18%. Five-year cumulative incidence of new or worsening ascites was of 18% and of developing PVT of 16%. Fifty (8.5%) patients received a liver transplantation and 109 (19%) died, including 55 non-liver related death. Transplant-free survival was 97%, and 83% at 1 and 5 years. Variables independently associated with transplant-free survival were age, ascites, serum bilirubin, albumin and creatinine levels at diagnosis and severe associated conditions. This allowed the creation of a Nomogram that accurately predicted prognosis. CONCLUSIONS: Prognosis of PSVD is strongly determined by the severity of the associated underlying conditions and parameters of liver and renal function.

Hepatic venous pressure gradient predicts risk of hepatic decompensation and liver-related mortality in patients with MASLD.

BACKGROUND & AIMS: Metabolic dysfunction-associated steatotic liver disease (MASLD) is a leading cause of advanced chronic liver disease (ACLD). Portal hypertension drives hepatic decompensation and is best diagnosed by hepatic venous pressure gradient (HVPG) measurement. Here, we investigate the prognostic value of HVPG in MASLD-related compensated ACLD (MASLD-cACLD). METHODS: This European multicentre study included patients with MASLD-cACLD characterised by HVPG at baseline. Hepatic decompensation (variceal bleeding/ascites/hepatic encephalopathy) and liver-related mortality were considered the primary events of interest. RESULTS: A total of 340 patients with MASLD-cACLD (56.2% male; median age 62 [55-68] years, median MELD 8 [7-9], 71.2% with diabetes) were included. Clinically significant portal hypertension (CSPH: i.e., HVPG ≥10 mmHg) was found in 209 patients (61.5%). During a median follow-up of 41.5 (27.5-65.8) months, 65 patients developed hepatic decompensation with a cumulative incidence of 10.0% after 2 years (2Y) and 30.7% after 5 years (5Y) in those with MASLD-cACLD with CSPH, compared to 2.4% after 2Y and 9.4% after 5Y in patients without CSPH. Variceal bleeding did not occur without CSPH. CSPH (subdistribution hazard ratio [SHR] 5.13; p <0.001) was associated with an increased decompensation risk and a higher HVPG remained an independent risk factor in the multivariable model (adjusted SHR per mmHg: 1.12, p <0.001). Liver-related mortality occurred in 37 patients at a cumulative incidence of 3.3% after 2Y and 21.4% after 5Y in CSPH. Without CSPH, the incidence after 5Y was 0.8%. Accordingly, a higher HVPG was also independently associated with a higher risk of liver-related death (adjusted SHR per mmHg: 1.20, p <0.001). CONCLUSION: HVPG measurement is of high prognostic value in MASLD-cACLD. In patients with MASLD-cACLD without CSPH, the short-term risk of decompensation is very low and liver-related mortality is rare, while the presence of CSPH substantially increases the risk of both. IMPACT AND IMPLICATIONS: While the incidence of compensated advanced chronic liver disease (cACLD) due to metabolic dysfunction-associated steatotic liver disease (MASLD) is increasing worldwide, insights into the impact of clinically significant portal hypertension (CSPH) on the risk of liver-related events in MASLD-cACLD remain limited. Based on the findings of this European multicentre study including 340 MASLD-cACLD patients, we could show that increasing HVPG values and the presence of CSPH in particular were associated with a significantly higher risk of first hepatic decompensation and liver-related mortality. In contrast, the short-term incidence of decompensation in patients with MASLD-cACLD without CSPH was low and the risk of liver-mortality remained negligible. Thus, HVPG measurements can provide important prognostic information for individualised risk stratification in MASLD-cACLD and may help facilitate the study of novel and promising treatment possibilities for MASLD.

Incidence of liver- and non-liver-related outcomes in patients with HCV-cirrhosis after SVR.

BACKGROUND & AIMS: As the long-term benefits of a sustained virological response (SVR) in HCV-related cirrhosis following direct-acting antiviral (DAA) treatment remain undefined, we assessed the incidence and predictors of liver-related events (LREs), non-liver-related events (NLREs) and mortality in DAA-treated patients with cirrhosis. METHODS: Consecutive patients with cirrhosis and SVR were enrolled in a longitudinal, single-center study, and divided into 3 cohorts: Cohort A (Child-Pugh A without a previous LRE), Cohort B (Child-Pugh B or Child-Pugh A with prior non-hepatocellular carcinoma [HCC] LREs), Cohort C (previous HCC). RESULTS: A total of 636 patients with cirrhosis (median 65 years-old, 58% males, 89% Child-Pugh A) were followed for 51 (8-68) months (Cohort A n = 480, Cohort B n = 89, Cohort C n = 67). The 5-year estimated cumulative incidences of LREs were 10.4% in Cohort A vs. 32.0% in Cohort B (HCC 7.7% vs. 19.7%; ascites 1.4% vs. 8.6%; variceal bleeding 1.3% vs. 7.8%; encephalopathy 0 vs. 2.5%) vs. 71% in Cohort C (HCC only) (p <0.0001). The corresponding figures for NLREs were 11.7% in Cohort A vs. 17.9% in Cohort B vs. 17.5% in Cohort C (p = 0.32). The 5-year estimated probabilities of liver-related vs. non-liver-related deaths were 0.5% vs. 4.5% in Cohort A, 16.2% vs. 8.8% in Cohort B and 12.1% vs. 7.7% in Cohort C. The all-cause mortality rate in Cohort A was similar to the rate expected for the general population stratified by age, sex and calendar year according to the Human Mortality Database, while it was significantly higher in Cohort B. CONCLUSIONS: Patients with cirrhosis and an SVR on DAAs face risks of liver-related and non-liver-related events and mortality; however, their incidence is strongly influenced by pre-DAA patient history. LAY SUMMARY: In this large single-center study enrolling patients with hepatitis C virus (HCV)-related cirrhosis cured by direct-acting antivirals, pre-treatment liver disease history strongly influenced long-term outcomes. In patients with HCV-related cirrhosis, hepatocellular carcinoma was the most frequent liver-related complication after viral cure. Due to improved long-term outcomes, patients with cirrhosis after HCV cure are exposed to a significant proportion of non-liver-related events.

Decompensation in Advanced Nonalcoholic Fatty Liver Disease May Occur at Lower Hepatic Venous Pressure Gradient Levels Than in Patients With Viral Disease.

BACKGROUND & AIMS: Portal hypertension is the strongest predictor of hepatic decompensation and death in patients with cirrhosis. However, its discriminatory accuracy in patients with nonalcoholic fatty liver disease (NAFLD) has been challenged because hepatic vein catheterization may not reflect the real portal vein pressure as accurately as in patients with other etiologies. We aimed to evaluate the relationship between hepatic venous pressure gradient (HVPG) and presence of portal hypertension-related decompensation in patients with advanced NAFLD (aNAFLD). METHODS: Multicenter cross-sectional study included 548 patients with aNAFLD and 444 with advanced RNA-positive hepatitis C (aHCV) who had detailed portal hypertension evaluation (HVPG measurement, gastroscopy, and abdominal imaging). We examined the relationship between etiology, HVPG, and decompensation by logistic regression models. We also compared the proportions of compensated/decompensated patients at different HVPG levels. RESULTS: Both cohorts, aNAFLD and aHVC, had similar baseline age, gender, Child-Pugh score, and Model for End-Stage Liver Disease score. Median HVPG was lower in the aNAFLD cohort (13 vs 15 mmHg) despite similar liver function and higher rates of decompensation in aNAFLD group (32% vs 25%; P = .019) than in the aHCV group. For any of the HVPG cutoff analyzed (<10, 10-12, or 12 mmHg) the prevalence of decompensation was higher in the aNAFLD group than in the aHCV group. CONCLUSIONS: Patients with aNAFLD have higher prevalence of portal hypertension-related decompensation at any value of HVPG as compared with aHCV patients. Longitudinal studies aiming to identify HVPG thresholds able to predict decompensation and long-term outcomes in aNAFLD population are strongly needed.

Performance of the model for end-stage liver disease score for mortality prediction and the potential role of etiology.

BACKGROUND & AIMS: Although the discriminative ability of the model for end-stage liver disease (MELD) score is generally considered acceptable, its calibration is still unclear. In a validation study, we assessed the discriminative performance and calibration of 3 versions of the model: original MELD-TIPS, used to predict survival after transjugular intrahepatic portosystemic shunt (TIPS); classic MELD-Mayo; and MELD-UNOS, used by the United Network for Organ Sharing (UNOS). We also explored recalibrating and updating the model. METHODS: In total, 776 patients who underwent elective TIPS (TIPS cohort) and 445 unselected patients (non-TIPS cohort) were included. Three, 6 and 12-month mortality predictions were calculated by the 3 MELD versions: discrimination was assessed by c-statistics and calibration by comparing deciles of predicted and observed risks. Cox and Fine and Grey models were used for recalibration and prognostic analyses. RESULTS: In the TIPS/non-TIPS cohorts, the etiology of liver disease was viral in 402/188, alcoholic in 185/130, and non-alcoholic steatohepatitis in 65/33; mean follow-up±SD was 25±9/19±21 months; and the number of deaths at 3-6-12 months was 57-102-142/31-47-99, respectively. C-statistics ranged from 0.66 to 0.72 in TIPS and 0.66 to 0.76 in non-TIPS cohorts across prediction times and scores. A post hoc analysis revealed worse c-statistics in non-viral cirrhosis with more pronounced and significant worsening in the non-TIPS cohort. Calibration was acceptable with MELD-TIPS but largely unsatisfactory with MELD-Mayo and -UNOS whose performance improved much after recalibration. A prognostic analysis showed that age, albumin, and TIPS indication might be used to update the MELD. CONCLUSIONS: In this validation study, the performance of the MELD score was largely unsatisfactory, particularly in non-viral cirrhosis. MELD recalibration and candidate variables for an update to the MELD score are proposed. LAY SUMMARY: While the discriminative performance of the model for end-stage liver disease (MELD) score is credited to be fair to good, its calibration, the correspondence of observed to predicted mortality, is still unsettled. We found that application of 3 different versions of the MELD in 2 independent cirrhosis cohorts yielded largely imprecise mortality predictions particularly in non-viral cirrhosis. Thus, we propose a recalibration and suggest candidate variables for an update to the model.

Decompensation in Direct-Acting Antiviral Cured Hepatitis C Virus Compensated Patients With Clinically Significant Portal Hypertension: Too Rare to Warrant Universal Β-Blocker Therapy.

Nonselective ß-blockers improve decompensation-free survival in viremic hepatitis C virus compensated cirrhotic patients with clinically significant portal hypertension, but their protective role after sustained virological response by direct-acting antiviral (DAA) is undefined. We evaluated the incidence of decompensation in DAA-cured Child-A patients without high-risk varices. During the 49-month (12-60) follow-up, only one of 148 patients decompensated (ascites), with a 4-year cumulative risk of 1%, but decompensation was associated with hepatocellular carcinoma. The risk of decompensation in DAA cured hepatitis C virus compensated Child-A cirrhotic patients with clinically significant portal hypertension but without high-risk varices is negligible; thus, questioning the need for nonselective ß-blocker treatment in this setting (see Visual abstract, Supplemental Digital Content, 1, http://links.lww.com/AJG/B861). JOURNAL/ajgast/04.03/00000434-202106000-00035/inline-graphic1/v/2021-05-28T144026Z/r/image-tiff.

Congenital Extrahepatic Portosystemic Shunts (Abernethy Malformation): An International Observational Study.

Congenital extrahepatic portosystemic shunt (CEPS) or Abernethy malformation is a rare condition in which splanchnic venous blood bypasses the liver draining directly into systemic circulation through a congenital shunt. Patients may develop hepatic encephalopathy (HE), pulmonary hypertension (PaHT), or liver tumors, among other complications. However, the actual incidence of such complications is unknown, mainly because of the lack of a protocolized approach to these patients. This study characterizes the clinical manifestations and outcome of a large cohort of CEPS patients with the aim of proposing a guide for their management. This is an observational, multicenter, international study. Sixty-six patients were included; median age at the end of follow-up was 30 years. Nineteen patients (28%) presented HE. Ten-, 20-, and 30-year HE incidence rates were 13%, 24%, and 28%, respectively. No clinical factors predicted HE. Twenty-five patients had benign nodular lesions. Ten patients developed adenomas (median age, 18 years), and another 8 developed HCC (median age, 39 years). Of 10 patients with dyspnea, PaHT was diagnosed in 8 and hepatopulmonary syndrome in 2. Pulmonary complications were only screened for in 19 asymptomatic patients, and PaHT was identified in 2. Six patients underwent liver transplantation for hepatocellular carcinoma or adenoma. Shunt closure was performed in 15 patients with improvement/stability/cure of CEPS manifestations. Conclusion: CEPS patients may develop severe complications. Screening for asymptomatic complications and close surveillance is needed. Shunt closure should be considered both as a therapeutic and prophylactic approach.

Plasma miRNA-based signatures in CRC screening programs.

Colorectal cancer (CRC) screening programs help diagnose cancer precursors and early cancers and help reduce CRC mortality. However, currently recommended tests, the fecal immunochemical test (FIT) and colonoscopy, have low uptake. There is therefore a pressing need for screening strategies that are minimally invasive and consequently more acceptable to patients, most likely blood based, to increase early CRC identification. MicroRNAs (miRNAs) released from cancer cells are detectable in plasma in a remarkably stable form, making them ideal cancer biomarkers. Using plasma samples from FIT-positive (FIT+) subjects in an Italian CRC screening program, we aimed to identify plasma circulating miRNAs that detect early CRC. miRNAs were initially investigated by quantitative real-time PCR in plasma from 60 FIT+ subjects undergoing colonoscopy at Fondazione IRCCS Istituto Nazionale dei Tumori, then tested on an internal validation cohort (IVC, 201 cases) and finally in a large multicenter prospective series (external validation cohort [EVC], 1121 cases). For each endoscopic lesion (low-grade adenoma [LgA], high-grade adenoma [HgA], cancer lesion [CL]), specific signatures were identified in the IVC and confirmed on the EVC. A two-miRNA-based signature for CL and six-miRNA signatures for LgA and HgA were selected. In a multivariate analysis including sex and age at blood collection, the areas under the receiver operating characteristic curve (95% confidence interval) of the signatures were 0.644 (0.607-0.682), 0.670 (0.626-0.714) and 0.682 (0.580-0.785) for LgA, HgA and CL, respectively. A miRNA-based test could be introduced into the FIT+ workflow of CRC screening programs so as to schedule colonoscopies only for subjects likely to benefit most.

Body mass index reduction improves the baseline procoagulant imbalance of obese subjects.

Obesity is a risk factor for cardiovascular diseases. The latter being dependent (at least in part) on plasma procoagulant imbalance (i.e., hypercoagulability). Information on hypercoagulability associated with obesity is scanty and mainly based on global traditional coagulation tests or on the measurement of individual components of coagulation (i.e., pro- and anticoagulants). Plasma from 33 obese subjects was investigated soon before endoscopic balloon placement and after removal (6 months later) by thrombin-generation procedures that are thought to represent much better than any other in vitro test the coagulation process occurring in vivo. We found that obese subjects possess a state of hypercoagulability as demonstrated by the modification of the main parameters of thrombin-generation. In particular, the median value (min-max) of the endogenous thrombin potential (ETP) of obese subjects at baseline was higher than that of controls [1968 (1335-2533) vs. 1710 (1010-2119), p < 0.001]. Endoscopic balloon placement achieved a BMI reduction from 38.9 (31.7-62.3) to 31.6 (21.9-53.3), p < 0.001 and a parallel reduction of thrombin-generation as demonstrated by the following findings. The ETP measured soon after balloon removal was significantly smaller than that measured at baseline [1783 (1224-2642) vs. 1968 (1335-2533), p < 0.01]. The other parameters of thrombin-generation, including lag-time, peak-thrombin, time-to-reach the peak and velocity index showed a pattern consistent with the ETP, both at baseline and soon after balloon removal. Endoscopic balloon placement achieves concomitant reduction of BMI and thrombin-generation in subjects with obesity.

Harmful and Beneficial Effects of Anticoagulants in Patients With Cirrhosis and Portal Vein Thrombosis.

BACKGROUND & AIMS: Vitamin K antagonists (VKAs) promote recanalization of portal vein thrombosis (PVT) in patients with cirrhosis. However, the benefit of PVT recanalization might be offset by major and minor bleeding associated with use of anticoagulants. We evaluated harmful and beneficial effects of VKA in patients with PVT and cirrhosis. METHODS: We performed a retrospective study of 63 consecutive patients with cirrhosis given anticoagulants for the first detection of non-neoplastic PVT from 2003 to 2015 in Italy. We collected data on bleeding events in these patients and compared them with those from patients without cirrhosis with venous thromboembolism (VTE) (n = 160) for up to 4 years. Time in the therapeutic range, based on the international normalized ratio, was used to determine the quality of anticoagulation. We also collected data from 139 patients with cirrhosis who did not receive VKAs (controls), to analyze portal hypertension-related events. We performed survival analyses to determine the effects of VKA in patients with PVT vs controls. RESULTS: The group with VTE and the group with PVT were comparable in age, sex, and time in the therapeutic range, but patients with VTE received VKAs for a longer time period (31.1 ± 16.9 mo vs 23.3 ± 16.2 mo; P = .002). The incidence of major or minor bleeding was higher in patients with PVT than patients with VTE (major, 24% vs 7%; P = .012; minor, 29% vs 19%; P = .024). Patients with PVT had a higher rate of major bleeding from the upper-gastrointestinal tract than patients with VTE (P = .019), but there were no significant differences in other types of major bleeding (P = .376). Patients with PVT and controls had the same rate of upper-gastrointestinal bleeding. Complete recanalization in patients with PVT receiving VKA (n = 31) was independently associated with increased portal hypertension-related event-free and transplantation-free survival times. CONCLUSIONS: In a retrospective analysis of 63 patients with cirrhosis given anticoagulants for PVT, we found VKA use to increase risk of minor bleeding, compared with patients without cirrhosis given VKA. However, this risk is offset by the ability of VKA to increase portal hypertension-related, event-free, and transplantation-free survival of patients with PVT recanalization. Portal hypertension, rather than anticoagulants, could account for the difference in risk of major bleeding between patients with PVT vs patients with VTE.

Evaluation of coagulation during treatment with directly acting antivirals in patients with hepatitis C virus related cirrhosis.

BACKGROUND & AIMS: The effect of direct-acting-antivirals (DAA) on coagulation of hepatitis-C-virus (HCV)-related cirrhosis is unknown. METHODS: We investigated 28 patients on DAA treatment and performed prothrombin-time, thrombin generation with and without thrombomodulin, whole-blood thromboelastometry, as well as the individual procoagulants (II, VIII, XIII, von Willebrand) and anticoagulants, antithrombin and protein-C. RESULTS: Patients had undetectable HCV-RNA at the end-of- treatment and at 12-weeks after end-of-treatment (sustained virological response). Transaminases were significantly decreased at both end-of-treatment and at 12-weeks. Prothrombin-time declined at 12-weeks, but did not reach statistical significance. Factor-II, protein-C and antithrombin increased significantly at end-of-treatment (P<.001) and persisted at 12-weeks. Factor-VIII decreased at end-of-treatment and to a greater extent at 12-weeks when reached statistical significance (P<.05). Factor-VIII/protein-C ratio decreased sharply, reached statistical significance at end-of-treatment (P<.01) and persisted at 12-weeks. Von-Willebrand decreased at end-of-treatment and reached statistical significance at 12-weeks (P<.001). Endogenous-thrombin-potential without thrombomodulin increased significantly at end-of-treatment (P<.01) and persisted at 12-weeks. No changes were observed after addition of thrombomodulin. Endogenous-thrombin-potential ratio (with/without thrombomodulin) decreased and reached statistical significance at 12-weeks (P<.05). Thromboelastometry clotting time decreased sharply, reached statistical significance at end-of treatment (P<.001) and persisted at 12-weeks. CONCLUSIONS: Treatment with DAAs in HCV-related cirrhosis results in improvement of the individual pro- and anticoagulants. It can be hypothesised that the net effect does not substantially modify their balance (as shown by the unchanged thrombin generation in the presence of thrombomodulin) but makes it more stable and less amenable to be perturbed as presumably occurs before treatment when there is a partial deficiency for both.