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CHAPTER
6
Epidemiology of liver diseases in heart failure
Yasser Fouad
1
, Rofida Khalifa
1
and Dina Attia
2
1
Gastroenterology, Hepatology and Endemic Diseases Departments, Minia University, Minia, Egypt
2
Gastroenterology, Hepatology and Endemic Diseases Departments, Beni Suef University, Beni Suef, Egypt
Introduction
Heart failure (HF) is a major public health problem affecting nearly 1 out of every 10 individuals older than
65 years. Many efforts are done to manage HF in order to reduce the mortality rate but, despite the efforts, there
is still high morbidity with frequent hospitalizations in patients with HF
[1,2].
HF is a systemic disease influencing many organs including the brain, lungs, kidneys, immune system, and
the gastrointestinal system. The hemod ynamic changes and systemic inflammatory state in cases of HF may lead
to different consequences in other systems including liver. HF is affecting the gut and liver in different aspects.
The gut changes in HF may include increased gut permeability, protein-losing enteropathy, ascite s, and altered
drug pharmacokinetics. A bidirectional relationship has been suggested to describe the heart and gastrointestinal
link and was named cardiointestinal syndrome
[3,4]. The systemic volume overload in HF leads to gut edema, so
causing bacterial translocation with concomitant monocyte activation and excessive cytokine release resulting in
systemic inflammation and disease progression
[5].
The heart and liver are in a continuous link in both health and disease. Since a long time, the relation between
heart and liver was mentioned in the famous old book (Canon; The Law). In this book, according to traditional
medicine, every body organ has its own temperament (fou r elements including wetness and dryness for tissue
moisture, warmth and coldness for basic metabolism). Both heart and liver affect the body temperament and
each other as well. Avicenna stated that the heart is more warm than the liver and the liver is more dry than the
heart, with the effect of this rule on the prognosis of both heart and liver diseases
[6].
The liver diseases can affect the heart and the heart diseases can affect the liver but sometimes both heart and
liver can be affected together in other diseases.
Organ failure or impairment is commonly observed in patients with HF. The hemodynamic changes related to
microvascular abnormalities of HF lead to either hepatic congestion or hypoperfusion. A correlation between
these hemodynamic changes and mortality in HF was reported by researchers
[7].
The interaction between the liver and the heart is simplified in
Fig. 6.1.
Assessment of the hepatic status in patients with HF is extremely important in predicting cardiac surgery out-
comes. Cirrhosis is a risk factor for poor outcome. It has been shown that the mortality exceeds 50% in patients
with child class C cirrhosis. Laboratory changes indicating synthetic dysfunction such as low serum albumin
level or prothrombin concentration is of particular importance and assessed regularly and aggressively in these
patients especially before surgery
[3].
The liver diseases in patients with heart failure
The liver involvement in HF may include irreversible patterns such as cirrhosis, which is rare now and
reversible patterns such as congestive hepatopathy (CH) or hypoxic hepatitis. In the acute setting, decreased cardiac
95
Cardio-Hepatology.
DOI:
https://doi.org/10.1016/B978-0-12-817394-7.00018-8 © 2023 Elsevier Inc. All rights reserved.
https://t.me/medicina_free
output accompanied by severe hypotension and hence reduced hepatic perfusion is the main factor leading to acute
hepatic injury, while backward increased venous pressure plays an important role. Biochemical cholestatic pattern is
related to hepatic congestion while hepatotoxic pattern is related to hypoperfusion. In most cases, there is a modest
elevation in liver enzymes except in ischemic hepatitis while a marked elevation of liver enzymes is noted.
Etiological factors of heart failure associated with hepatic disorders
1. Congenital causes: Eisenmenger syndrome, repaired Tetralogy of Fallot with pulmonary regurgitation, Ebstein’s
anomaly, pulmonary stenosis/pulmonary regurgitation single-ventricle physiology after Fontan procedure (e.g.,
tricuspid atresia), transposition of the great arteries after atrial switch repair (Mustard, Senning), secundum atrial
septal defect with pulmonary stenosis or pulmonary hypertension, partial atrioventricular septal defect with
tricuspid regurgitation and/or pulmonary hypertension, left ventricular outflow tract obstruction/coarctation of
the aorta, repaired complete atrioventricular septal defect, and ventricular septal defect
[8].
2. Acquired causes may include constrictive pericarditis, mitral stenosis, tricuspid regurgitation,
cardiomyopathy, and cor pulmonale
[9].
Hepatic consequences in cardiac patients
Liver function tests abnormalities
The main liver functional abnormalities are cholestatic including elevated bilirubin, gamma-glutamyl trans-
peptidase (GGT), and alkaline phosphatase (ALP), or synthetic including decreased concentrations of albumin
and prothrombin and elevated serum levels of hepatocyte necrosis markers including mainly aspartate amino-
transferase (AST) and alanine aminotransferase (ALT)
[10].
The prevalence of abnormal liver function tests in patients with HF varies from one study to the others accord-
ing to the population studied and severity of HF.
In a multicentre study including 1743 patients with HF, liver function tests abnormalities were seen in 76% of patients.
The elevation of total bilirubin was found in 34% of patients, GGT in 44%, ALP in 20%, AST in 42%, and ALT in 35%.
The prevalence of liver function abnormalities was different according to the type of HF. In cardiogenic shock, the preva-
lence of liver function abnormalities was significantly higher than those with mild HF or pulmonary edema
[11].
FIGURE 6.1 The relation between liver and heart. The hepatic changes in heart failure, the cardiac changes in hepatic diseases, and the
diseases affecting both heart and liver. HCC, hepatocellular carcinoma.
96 6. Epidemiology of liver diseases in heart failure
II. Hepatobiliary system in heart failure
https://t.me/medicina_free
In another study, acute study of clinical effectiveness of nesiritide in decompensated HF (ASCEND-HF),
including 7441 patients with HF, 4228 had complete liver function data available. In the analysis of the cohort,
42% had abnormal bilirubin level, while 30% had abnormal AST, and 22% had abnormal ALT
[12]. In this study,
greater proportions of patients with abnormal bilirubin were male, young age, and with low body mass index
(BMI). Atrial flutter/fibrillation was more common in patients with abnormal bilirubin than those with normal.
Moreover, the patients with abnormal bilirubin had evidence of elevated jugular venous pressure and peripheral
edema, indicating right-sided volume overload. In the same cohort analysis, patients with elevated AST and ALT
were young and with low BMI. The myocardial infarction was less common in patients with elevated AST and
ALT. In the regression analysis, total bilirubin, not aminotransferases, was associated with worse outcomes at
1 month and 6 months.
A study on patients with HF after cardiac arrest stated that hypoxic hepatitis, defined by ALT .1000 IU, was
prevalent in 7% of patients and was associated with higher mortality and unfavorable neurological outcome com-
pared to patients with abnormal bilirubin or prothrombin time
[13].
The prevalence of various liver dysfunction abnormalities in patients with HF is shown in
Table 6.1 [11].
Interestingly, these liver function test abnormalities in HF may improve by heart transplantation. In a retro-
spective study, the improvement in GGT, ALP, and bilirubin was reported after 3 months, while ALT, AST, and
lactic dehydrogenase (LDH) were normalized after about 12 months
[14].
Congestive hepatopathy
CH first described by Sherlock in 1951, refers to a spectrum of liver injury caused by passive hepatic conges-
tion of the liver caused by right-sided HF, although the “nutmeg,” congestive liver is a histological description
attributed to Kiernan in 1833
[15,16].
Any cause of right-ventricular failure may lead to CH. The main causes in this setting may include constrictive
pericarditis, severe tricuspid regurgitation, mitral stenosis, cor pulmonale, or end-stage cardiomyopathies
[9].
The advances in medical treatment of cardiac diseases and cardiac transplantation led to changes in the spec-
trum of CH. The etiology of HF is changing with predominance of ischemic cardiomyopathy, in addition to
advances in the treatment of congenital heart diseases and cardiac transplantation are important factors in declin-
ing the incidence of cardiac cirrhosis
[1719].
There is a limited information about the epidemiology of CH, probably due to the heterogeneous causes (e.g.,
ischemic cardiomyopathy, valvular disease, constrictive pericarditis, and congenital heart disease). In addition,
most cases of CH are subclinical, with presenting symptoms driven by cardiac disease with only hepatic symp-
toms in severe cases and after developing significant cirrhosis and portal hypertension
[20,21].
Fontan-associated liver disease (FALD) is a known type of CH after Fontan procedure (operation in which a
single working heart ventricle is connected to the systemic vascular system, allowing passive venous return to
the pulmonary arteries). This procedure leads to the exposure of the liver to high pressure and congestive
changes. Researchers are considering FALD as a model for CH
[22].
TABLE 6.1 The prevalence of different liver function abnormalities in cases of heart failure.
Liver function abnormality Patients with abnormality (%)
mALT 343
mAST 433
kAlbumin 1864
mBilirubin 1364
mAlk P 1444
mGGT 3248
mLD 6365
ALT, Alanine transaminases; AST, Asparte Aminotransefease; Alk P, Alkaline phosphatase; GGT, Gama glutamyl
transpeptidase; LDH, lactic dehydrogenase.
Adopted from Vyskocilovaa K, Spinarovaa L, Spinarb J. Prevalence and clinical significance of liver function abnormalities
in patients with acute heart failure. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2015; 159(3):429s436.
97The liver diseases in patients with heart failure
II. Hepatobiliary system in heart failure
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Previous studies showed that CH was present in a range between 15% to 65% in patients with significant HF
[19,23,24]. In one study, 19% of 83 patients with HF had significant liver fibrosis with only one patient who had
established cardiac cirrhosis
[19]. In another study, on a smaller series of patients, although congestive changes
were common, only 19% of patient had cirrhosis
[25].
Cirrhosis and its complications can develop overtime in CH. There are some clinical tools to predict and
estimate the liver fibrosis but not accurate. Serological markers, liver biopsy, imaging studies, and liver stiffness
measurements can be used to predict hepatic decompensation. Unfortunately, these tools are not accurate to
differentiate between CH and liver fibrosis and till now there are no evidence-based guidelines to screen and
manage patients with CH
[26].
CH does not lead to significant morbidity or mortality except in rare cases. The clinical outcome is mainly
dependent on the underlying cardiac disease. Even the progression to cardiac cirrhosis was not shown to be cor-
related with poorer prognosis and can be reversed in many cases with optimization of cardiac function.
Fulminant hepatic failure is rare and attributed to a superimposed ischemic insult
[27].
Some cases with CH were to be complicated with hepatocellular carcinoma (HCC). The prevalence of HCC
was found to be 5% of patients after Fontan operation
[28]. The time after Fontan operation ranged from 10 to
29 years till the appearance of HCC. The difficulty in differentiating HCC from other nodules after Fontan opera-
tion by dynamic computed tomography is due to the inability to distinguish the delayed venous washout of
HCC from that of congestive changes. So the diagnosis in these cases depends on other factors such as alpha
fetoprotein, heterogenous appearance of the mass or portal thrombus
[29].
The American Association for Study of Liver Diseases (AASLD) expert panel suggests a screening for HCC in
patients with CH at 1520 years after Fontan operation. Moreover, the AASLD stated that patients with atypical-
appearing nodules in the presence of CH may need a liver biopsy to confirm the diagnosis
[26].
Hypoxic hepatitis
Acute cardiogenic liver injury (ACLI), shock liver, and ischemic hepatitis are also the alternative terms for
hypoxic hepatitis. Hypoxic hepatitis results from reduced oxygen supply to the liver due to marked circulatory
collapse. The most important characteristic is a massive elevation of liver enzymes. ACLI follow ing cardiogenic
shock was reported in 4.4% of patients with acute liver failure in a large study involving 1147 patients
[30].
The combination of severe cardiac clinical signs (low cardiac output and systemic congestion) and severe
hepatic impairment is the basis of diagnosis of hypoxic hepatitis
[31].
In a study involving patients with hypoxic hepatitis, congestive HF was reported in 80 cases, toxic/septic
shock in 19 cases, acute cardiac failure in 20 cases, and exacerbated chronic respiratory failure in 19 cases.
The hypoxic hepatitis in patients with HF was attributed to decreased hepatic blood flow due to left-sided
HF and venous congestion secondary to right-sided HF, whereas shock state was present in only about 50%
of cases
[32].
Hypoxic hepatitis is widely recognized in the intensive care units by its significant enzyme elevation. The inci-
dence of hypoxic hepatitis varies from as low as 2/1000 in the hospital setting to about 10% at the intensive care
units
[33,34]. In a recent study, hypoxic hepatitis was seen in 7% of patients who developed cardiogenic shock
and resuscitated for cardiac arrest. In this study, the median time to develop hypoxic hepatitis was {01} days
with the same median time period {01} days to develop the highest levels of ALT and AST
[15].
Drug induced liver injury
Many drugs used in heart diseases may have hazards regarding the liver functions and histology. Cholestasis
may be caused by angiotensin-converting enzyme (ACE) inhibitors, thiazides, ARB, and warfarin, while hepato-
cellular damage may be caused by different agents including antiplatelets, statins, fibrate, enoxaparin, ca channel
blockers, and amiodarone. Some drugs may cause mild elevations of aminotransferases including heparin and
aldosterone antagonists
[22].
In case s of hepatic dysfunction associated with HF, the pharmacokinetics and pharmacodynamics of drugs
are altered. M ost ACE inhibitors (except fosinopril) are cleared by the kidneys while, othe r ACE inhibitors are
prodrugs (e.g., enalapril and ramipril), and must be converted to an active metaboli te by esterification in the
liver
[35].
The list of drugs used in HF and their excretion is seen in
Table 6.2 [23,24,3639].
98 6. Epidemiology of liver diseases in heart failure
II. Hepatobiliary system in heart failure
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Liver diseases causing heart failure
Cirrhosis
In patients with cirrhosis, autonomic cardiovascular system dysfunctions lead to both systolic and diastolic
dysfunctions. Early studies in the 1950s proved the presence of hyperdynamic circulation in patients with
cirrhosis, manifested clinically by reduced systemic vascular resistance and increased cardiac output with the
appearance of the term “cirrhotic cardiomyopathy” and reduced systemic vascular resistance
[40].
Hyperdynamic circulation is associated with the production of cardio depressant substances, including
endothelin, cytokines, and bile acids. Altered plasma membrane fluidity, impaired B adrenergic signaling, down-
regulation of B receptors, Ca channels, electrophysiological changes, and nitric oxide are potential mechanisms in
cardiovascular changes in patients with cirrhosis
[41].
The first cirrhotic patient with abnormal cardiovascular functions was reported in 1953
[42]. The changes
reported in patients with cirrhosis included an increase in left ventricular end diastolic pressure and a decrease
in the cardiac stroke index and left ventricular ejection fraction during exercise, indicating an abnormal ventricular
response to an increased ventricular filling pressure. In addition, in most patients with cirrhosis, aerobic exercise
capacity, and maximal heart rate are lower than normal
[43].
Cirrhotic cardiomyopathy is not well estimated in epidemiological studies because of the variable clinical pre-
sentation and being asymptomatic in many patients, manifesting only under physical or pharmacological stress
[44,45]. More than 40% of patients undergoing liver transplantation are having cardiac dysfunction, thus in many
cases, cirrhotic cardiomyopathy may be missed or under-evaluated [4648].
HF may be presented in 50% of patients with cirrhotic cardiomyopathy in patients undergoing liver transplan-
tation, and about 21% die due to cardiac causes
[49].
In a recent study, the incidence of cirrhotic cardiomyopathy was 32% of 200 patients with cirrhosis
[50,51].
TABLE 6.2 The clearance of different drugs used in heart diseases.
Drug Elimination
ACE inhibitors
Fosinopril Liver and kidney
trandolapril Liver and kidney
B blockers
Bisoprolol Liver and kidney
Nebivolol Liver and kidney
Carvidelol Liver
Metoprolol Liver
Angiotensin blockers
Candesartan Liver
Iosartan Liver and kidney
Isosorbide Dinitrate Kidney
Hydralazine Kidney
ACE, Angiotensin-converting enzyme.
Adopted from Allen LA, Felker GM, Pocock S,Wang D, Yusuf S, Michelson EL, et al. Liver function abnormalities and outcome in
patients with chronic heart failure: data from the candesartan in heart failure: assessment of reduction in mortality and morbidity
(CHARM) program. Eur J Heart Fail. 2009; 11(2):170177; Van Deursen VM, Damman K, Hillege HL, Van Beek AP, Van
Veldhuisen DJ, Voors AA. Abnormal liver function in relation to hemodynamic profile in heart failure patients. J Card Fail. 2010; 16
(1): 8490; Nikolau M, Parissis J, Yilmaz MB, Seronde MF, Kivikko M, Laribi S. Liver function abnormalities, clinical profile, and
outcome in acute decompensated heart failure. Eur Heart J. 2013; 34:742749; Poelzl G, Ess M, Mussner-Seeber C, Pachinger O,
Frick M, Ulmer H. Liver dysfunction in chronic heart failure: prevalence, characteristics and prognostic significance. Eur J Clin
Invest. 2012;42(2):153163; Batin P, Wickens M, McEntegart D, Fullwood L, Cowley AJ. The importance of abnormalities of liver
function tests in predicting mortality in chronic heart failure. Eur Heart J. 1995; 16:16131618; Shinagawa H, Inomata T, Koitabashi
T, Nakano H, Takeuchi I, Naruke T et al. Prognostic significance of increased serum bilirubin levels coincident with cardiac
decompensation in chronic heart failure. Circ J. 2008; 72:364369.
99The liver diseases in patients with heart failure
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Hepatocellular carcinoma
Cardiac metastases were rarely reported in cases of HCC, with the appearance of BuddChiari syndrome. But
the causes of death in these cases were related to liver diseases and rarely to cardiac causes
[5255].
Nonalcoholic fatty liver disease
A global rise of the prevalence of the nonalcoholic fatty liver disease (NAFLD), obesity, and type 2 diabetes
mellitus is noted
[56]. The prevalence of NAFLD is 25.24% with the highest prevalence in the Middle East, South
America, and lowest Africa
[57].
The rela tion between cardiovascular events and NAFLD has been established. Steatosis, age, and blood pres-
sure were found to be independent risk predictors of vascular damage, with the steatosis is the strongest one
[58]. Co ronary artery disease was the main cause of death in patients with NAFLD [59]. The severity of cardio-
vascular events is correlated with the degree of hepatic inflammation in patients with NAFLD and the cardiovas-
cular mortality is increased at least twofold in nonalcoholic steatohepatitis (NASH)
[5860]. The relation between
the NAFLD and metabolic syndrome is being bidirectional secondary to the inflammatory and the metabolic pro-
cess. The insulin resistance plays a pivotal role in cardiovascular risk in those patients and the reduced
endothelin-dependent vasodilatation is a predictor in NAFLD-hypertensive patients
[61,62].
Liver transplantation
HF with a high mortality may follow liver transplantation either early (in less than 30 days) or late (in more
than 30 days). The early-onset HF is related to surgical cardiovascular complications while coronary atherosclero-
sis explains the late-onset HF. Cardiac assessment and close monitoring after liver transplantation is needed,
especially in patients with a history of diastolic dysfunctions for identification of HF
[6367].
There are many risk factors associated with the development of HF following liver transplantation. Older age, female
gender, diabetes mellitus, hypertension, history of coronary artery disease, hemochromatosis, chronic hepatitis C virus
infection, NASH, amyloidosis, smoking, alcohol abuse, and depression are important risk factors. In addition, laboratory
abnormalities including creatinine concentration, albumin level, troponin sensitivity, plasma sodium level, and brain
natriuretic peptide are also considered as important risk factors. Moreover, the changes in the electrocardiographic,
echocardiographic, and hemodynamic parameters are taken into consideration as very important risk factors
[68].Itis
recommended that echocardiography, computed tomography, cardiovascular magnetic resonance in addition to timely
implementation of therapeutics of HF are essential in the management of candidates of liver transplantation
[69].
Diseases leading to heart failure and affecting the liver
Infections
There are many infections affecting both the heart and the liver. Sepsis may lead to both acute hepatic failure
and acute cardiac failure. Hepatitis C may cause myocarditis or cardiomyopathy. Cytomegalovirus infection is an
important cause of hepatitis and may lead also to myopericarditis. Malaria is a protozoal infection that may lead
to hepatic necrosis in addition to cardiac failure. Amebiasis is another protozoal infection with an important
impact on both liver (causing hepatitis, hepatic necrosis, or amebic liver abscess) and heart (causing HF, myocar-
ditis, or pericardial effusion). HIV may cause hepatitis, myocarditis, and cardiomyopathy. Dengue fever may
involve the liver causing hepatitis and the heart causing myocarditis
[20,70].
Metabolic diseases
Hemochromatosis and Wilson disease are both autosomal recessive diseases that may cause HF and cirrhosis.
The HF is more prevalent in cases of hemochromatosis. A higher risk of nonischemic heart diseases exists in
patients with hemochromatosis, although atherosclerosis related heart diseases and the carotid plaques are HFE
genotyping independent
[71,72]. Cardiac surgery and liver transplantation may be both needed in cases of
hemochromatosis with HF and liver failure
[20]. In Wilson’s disease, although heart diseases are rare, autonomic
dysfunction, arrhythmias, cardiomyopathy, and cardiac death are associated disorders. A P wave dispersion,
being associated in several cardiac diseases and risk factor for atrial fibrillation, was found to be present in early
stages cardiac disorders asymptomatic Wilson’s patents
[73,74].
Autoimmune diseases
The famous example is the Graves’ disease, causing both HF and different patterns of hepatic injures including
jaundice and hepatic failure
[75].
100 6. Epidemiology of liver diseases in heart failure
II. Hepatobiliary system in heart failure
https://t.me/medicina_free
Congenital causes
1. Alagille syndrome: may present with cholestasis due to paucity of intrahepatic ducts, and congenital heart
defects including peripheral pulmonary stenosis and tetralogy of Fallot
[76].
2. Abernethy malformation: congenital absence of portal vein leading to hepatic encephalopathy and
hepatopulmonary syndromes with associated cardiac anomalies including VSD, ASD, and PDA
[8].
3. Biliary atresia splenic malformations syndrome: progressive destruction of extrahepatic bile ducts with
associated cardiac anomalies including ASD, VSD, PDA, TOF, and right-sided aortic arch
[8].
4. Mitochondrial fatty acid oxidation disorders: abnormalities in fatty acid metabolism associated with
cardiomyopathy
[8].
5. Situs inversus totalis is a concern in cases of liver or heart transplantation
[20].
Chronic alcoholism
Patients with alcoholic cardiomyopathy have higher prevalence of cirrhosis and patients with alcoholic cirrhosis
have higher prevalence of impaired cardiac performance
[77]. Cardiomyopathy may be missed in patients with
alcoholic cirrhosis because many patients are asymptomatic, so it is recommended to screen patients with alcoholic
cirrhosis for the cardiomyopathy
[77,78].
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