Renal dysfunction in patients with chronic liver disease

Consensus on the management of complications of cirrhosis of the liver in pediatrics

The Asociación Mexicana de Hepatología A.C. carried out the Consensus on the Management of Complications of Cirrhosis of the Liver in Pediatrics to provide physicians with useful information for treating said complications. A group of pediatric gastroenterologists and experts in nutrition, nephrology, and infectious diseases participated and reviewed the medical literature. The Delphi method was applied to obtain the level of agreement on the statements that were formulated. The statements were sent to the participants to be analyzed and voted upon, after which they were discussed in virtual sessions, and the final versions were produced. The aim of the consensus results was to issue indications for the management of pediatric patients with liver cirrhosis, to prevent or control complications.

Trends, outcomes, and management of acute myocardial infarction in patients with chronic viral hepatitis

OBJECTIVES

There is a paucity of data on the management and outcomes of chronic viral hepatitis (CVH) patients [including chronic hepatitis B (CHB) and chronic hepatitis C (CHC)] presenting with acute myocardial infarction (AMI).

METHODS

We utilized the National Inpatient Sample database (2001-2019) and studied the management and outcomes of CVH patients with AMI and stratified them by subtypes of CVH. The adjusted odds ratio (aOR) of adverse outcomes in CVH groups were compared to no-CVH groups using multivariable logistic regression.

RESULTS

Of 18,794,686 AMI admissions, 84,147 (0.45%) had a CVH diagnosis. CVH patients had increased odds of adverse outcomes including in-hospital mortality (aOR 1.40, 95%CI 1.31-1.49, p < 0.05), respiratory failure (1.11, 95%CI 1.04-1.17, p < 0.001), vascular complications (1.09, 95%CI 1.04-1.15, p < 0.001), acute kidney injury (1.36, 95%CI 1.30-1.42, p < 0.001), gastrointestinal bleeding (1.57, 95%CI 1.50-1.68, p < 0.001), cardiogenic shock (1.44, 95%CI 1.04-1.30, p < 0.001), sepsis (1.24, 95%CI 1.17-1.31, p < 0.001), and were less likely to undergo invasive management. On subgroup analysis, CHB had higher odds of adverse outcomes than the CHC group (p < 0.05).

CONCLUSION

CVH patients presenting with AMI are associated with worse clinical outcomes. CHB subgroup had worse outcomes compared to the CHC subgroup.

Colistin-Induced Acute Kidney Injury and the Effect on Survival in Patients with Multidrug-Resistant Gram-Negative Infections: Significance of Drug Doses Adjusted to Ideal Body Weight

Background

Colistin is a lifesaving treatment for multidrug-resistant Gram-negative bacterial (MDR-GNB) infections along with its well-known nephrotoxicity. The controversy of colistin-induced acute kidney injury (AKI) on mortality is noted. This study aimed to determine the risk factors and impact of AKI on the survival and significance of colistin dosage.

Methods

A retrospective cohort study was performed in adult patients who received intravenous colistin for MDR-GNB treatment between June 2015 and June 2017. Factors influencing colistin-induced AKI and survival were evaluated by Cox regression analysis. Cut-off levels of the colistin dose per ideal body weight (IBW) that significantly affected clinical outcomes were assessed with linearity trends and receiver operating characteristic analyses.

Results

AKI occurred in 68.5% of 412 enrolled patients with an incidence rate of 10.6 per 100 patients-days and a median time was 6 (3–13) days. Stages I–III of AKI were 38.3, 24.5, and 37.2%. Factors associated with colistin-induced AKI were advanced age, high serum bilirubin, AKI presented before colistin administration, increased daily colistin doses per IBW, and concomitant use of nephrotoxic drugs. Colistin-induced AKI was related to mortality (HR 1.74, 95% CI 1.06–2.86, p=0.028). In the non-AKI before colistin usage subgroup, the total dose and total dose/IBW were >1,500–2,000 mg and 30–35 mg/kg to benefit mortality reduction but were <2,500–3,000 mg and 45–50 mg/kg for risk reduction of AKI. A daily colistin dose/IBW >4.5 mg/kg/day also increased the risk of AKI. In the AKI developed before colistin subgroup, the cut-off values of total colistin dose >1250–1350 mg and total dose/IBW >23.5–24 mg/kg demonstrated significant risks of AKI.

Conclusion

The incidence of AKI after colistin administration was high and impacted mortality. Prevention and early correction of these related factors are mandatory. Careful use of colistin was also both beneficial in mortality and AKI reductions.

Risk factors of hepatocellular carcinoma in type 2 diabetes patients: A two-centre study in a developing country

Type 2 diabetes mellitus (T2DM) is increasingly known as a risk factor of hepatocellular carcinoma (HCC). In this study, we determined the risk factors associated with HCC in T2DM patients. This was a matched case-control study conducted at two hepatobiliary referral centres in a developing country. Patients' sociodemographic, clinical, and biochemical characteristics between 1 January 2012 and 30 June 2018 were extracted from the electronic medical records and analysed using multivariate logistic regression analysis. A total of 212 case-control pairs were included. Significant risk factors included Chinese and Malay ethnicities that interacted with viral hepatitis (adjusted odds ratio [AOR] = 11.77, 95% confidence interval [CI]: 1.39-99.79) and (AOR = 37.94, 95% CI: 3.92-367.61) respectively, weight loss (AOR = 5.28, 95% CI: 2.29-12.19), abdominal pain/ discomfort (AOR = 6.73, 95% CI: 3.34-13.34), alcohol (AOR = 4.08, 95% CI: 1.81-9.22), fatty liver (AOR = 3.29, 95% CI: 1.40-7.76), low platelet (AOR = 4.03, 95% CI:1.90-8.55), raised alanine transaminase (AOR = 2.11, 95% CI: 1.16-3.86). and alkaline phosphatase (ALP) levels (AOR = 2.17, 95% CI: 1.17-4.00). Statins reduced the risk of HCC by 63% (AOR = 0.37, 95% CI: 0.21-0.65). The identification of these factors aids the risk stratification for HCC among T2DM patients for early detection and decision-making in patient management in the primary care setting.

Liver Transplant Patients with High Levels of Preoperative Serum Ammonia Are at Increased Risk for Postoperative Acute Kidney Injury: A Retrospective Study

Acute kidney injury (AKI) is one of the most frequent postoperative complications after liver transplantation (LT). Increased serum ammonia levels due to the liver disease itself may affect postoperative renal function. This study aimed to compare the incidence of postoperative AKI according to preoperative serum ammonia levels in patients after LT. Medical records from 436 patients who underwent LT from January 2010 to February 2020 in a single university hospital were retrospectively reviewed. The patients were then categorized according to changes in plasma creatinine concentrations within 48 h of LT using the Acute Kidney Injury Network criteria. A preoperative serum ammonia level above 45 mg/dL was associated with postoperative AKI (p < 0.0001). Even in patients with a normal preoperative creatinine level, when the ammonia level was greater than 45 μg/dL, the incidence of postoperative AKI was significantly higher (p < 0.0001); the AKI stage was also higher in this group than in the group with preoperative ammonia levels less than or equal to 45 μg/dL (p < 0.0001). Based on the results of our research, an elevation in preoperative serum ammonia levels above 45 μg/dL is related to postoperative AKI after LT.

Liver fibrosis of hepatitis C virus infection in routine hemodialysis patients in Indonesia

BACKGROUND The risk of hepatitis C virus (HCV) infection is increasing in patients under routine hemodialysis, but only some patients progress to liver fibrosis. This study was aimed to identify the prevalence of significant liver fibrosis in routine hemodialysis patients with hepatitis C infection as well as factors associated with liver fibrosis. METHODS This cross-sectional study was conducted in three tertiary general hospitals (Cipto Mangunkusumo Hospital, Persahabatan Hospital, and Fatmawati Hospital) in Jakarta, Indonesia, among hemodialysis patients infected with HCV. Total sampling was used from May to September 2017 in hemodialysis unit of all hospitals. Sex, age, time at first diagnosis of HCV, duration of HCV infection, duration of hemodialysis, AST level, hepatitis B virus coinfection and diabetes mellitus were analyzed in association with significant liver fibrosis. Liver fibrosis was assessed using transient elastography and considered significant if the value was ≥7.1 kPa. Chi-square, Mann–Whitney U, and Fisher’s exact tests were used. Risk model was analyzed with logistic regression. RESULTS Of the 133 hemodialysis patients infected with HCV, 71.4% of the subjects had significant liver fibrosis. In the risk model, male gender (odds ratio [OR] = 3.92; 95% confidence interval [CI] = 1.74–8.84; p < 0.001) and diabetes mellitus (DM) (OR = 2.85; 95% CI = 1.03–7.88; p = 0.043) were associated with significant liver fibrosis. CONCLUSIONS The prevalence of significant liver fibrosis in routine hemodialysis patients with hepatitis C infection was high. Male and DM were associated with significant liver fibrosis.

Correlation Between MELD and UNa/K Ratio in Predicting Renal Dysfunction in Cirrhotic Patients

BACKGROUND

Renal dysfunction is one of the dreaded complications of cirrhosis. MELD is a validated chronic liver disease (CLD) severity scoring system. Urinary (U) Na/K ratio closely correlates with renal dysfunction in terms of low GFR in cirrhotic patients.

PATIENTS AND METHODS

All consecutive patients with decompensated cirrhosis between the age of 18 to 70 years, of either gender, presenting in the outpatients' department of Sindh Institute of Urology and Transplantation, Karachi, from June 2015 to June 2017 were included. The MELD score was calculated and the UNa/K ratio less than 1 was taken as surrogate marker of renal dysfunction. Statistical analysis was performed by SPSS (version 20.0).

RESULTS

A total of 71 patients were enrolled. The mean age was 43.79 years and majority were male (67.6%). The most common cause of liver cirrhosis was HCV, found in 42 (59.2%) patients. The mean CTP score was 10.48 ± 2.069 (range: 6-14) with majority of the patients following in class C, that is, 48 (67.6%). Mean MELD score was 21.75 ± 8.96 (range: 8-43). In 57 patients (80.3%), MELD score was > 15.The mean serum creatinine and mean serum sodium were 1.5 ± 1.1 mg/dl (range: 0.37-5.3) and 133.79 ± 6.9 mmol/L (range: 112-152), respectively. Mean urinary sodium and urinary potassium were 38.60 ± 46.64 mmol/L (range: 5-181) and 38.15 ± 23.9 mmol/L (range: 4.3-112), respectively. In majority of study population, UNa/K ratio was below 1, that is, in 52 patients (73.2%). Statistically significant correlation was documented between MELD score and UNa/K ratio (ɤ = 0.34, P = 0.004).

CONCLUSION

The inverse correlation between MELD scores and UNa/K ratio indicates that patients with CLD and higher MELD scores might have renal dysfunction. This finding however should be corroborated by large scale studies.