Acute Liver Failure in Dogs
- Occurrence: rarer
- Location of illness: Abdomen/pelvis, General/Whole body
AcuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure is a sudden and usually severe impairment of liver function. In dogs, it often manifests as jaundice (icterus), coagulopathyCoagulopathy refers to a blood coagulation disorder that can lead to an increased tendency to bleed or excessive clotting. Causes can include genetic factors, diseases, certain medications, or liver dysfunction. (blood clotting disorders), and signs of hepatic encephalopathy, i.e., neurological symptoms caused by liver toxins. The liver can no longer perform its vital functionsVital functions are essential bodily functions necessary to sustain life. These include breathing, heart rate, blood pressure, body temperature, and level of consciousness. in a short period of time. This means that, among other things, detoxification, proteinProteins are large molecules made up of amino acids and play an essential role in almost all biological processes. They are necessary for building body tissue, the function of the immune system, and as enzymes for metabolic reactions. synthesis, and metabolicMetabolic refers to metabolism, i.e. the entirety of chemical processes that take place in a living organism to enable life processes. Metabolic disorders can cause a variety of Diseases in Dogs and cats. regulation are significantly impaired. This is a medical emergency that requires immediate diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and treatment to save the animal’s life.
The most important facts at a glance
Acute liver failure in dogs is a life-threatening disease characterized by sudden failure of liver functions. Thanks to modern diagnostics and therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. approaches, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. is no longer necessarily hopeless. However, rapid intervention is crucial. New research suggests that the use of regeneration-promoting substances (such as certain antioxidants) and optimal nutrition can significantly increase the chances of recovery. In particular, in combination with intensive monitoring and targeted treatment of the underlying disease, the course of the disease can be positively influenced. Nevertheless, acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure remains a very serious clinical picture that requires close veterinary supervision.
Causes
Several reasons can triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats. acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure in dogs. The most important include:
Toxic Influences
- Xylitol: A sweetener found in sugar-free chewing gums or candies. Even the smallest amounts can lead to acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. hypoglycemiaHypoglycemia is a condition in which blood sugar levels fall below the normal range. Symptoms may include tremors, sweating, Hunger, confusion, and in severe cases, loss of consciousness. and liver failure in dogs.
- Medications: Some pain relievers (e.g., paracetamol) or other human medicines are highly toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. to dogs and can quickly triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats. massive damage to the liver cells.
- Plants: Certain ornamental plants or fungi, such as the genus Amanita, are highly toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. to dogs. Consumption can triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats. acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver necrosisNecrosis is the Death of tissue in a living organism, caused by factors such as injury, infection, or lack of blood supply. Necrotic tissue can cause Inflammatory conditions and further health problems..
Infections
- Leptospirosis: A bacterial infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. that can massively damage the liver cells and cause acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure.
- Viruses: Certain viralViral refers to viruses and their effects on the organism. Viral infections in dogs and cats can range from harmless colds to severe, life-threatening diseases. pathogens, such as CanineCanine refers to anything related to dogs. The term is used to describe characteristics, diseases, or specific aspects that specifically affect dogs. Adenovirus (CAV), can triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats. hepatitis, which leads to acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure.
IschemiaIschemia refers to an inadequate blood supply to an organ or tissue, leading to a reduction in oxygen and nutrient supply. Ischemia can lead to tissue damage or death if left untreated.
A reduced blood supply to the liver, for example, as a result of circulatory shock, heart failure, or thrombosisThrombosis is the formation of a blood clot in a blood vessel that can obstruct or block blood flow. Thromboses can occur in veins (venous thrombosis) or arteries (arterial thrombosis)., can massively damage the liver cells. Especially in older dogs with heart problems, this can lead to an acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. undersupply of oxygen to the liver, which favors failure.
MetabolicMetabolic refers to metabolism, i.e. the entirety of chemical processes that take place in a living organism to enable life processes. Metabolic disorders can cause a variety of Diseases in Dogs and cats. Disorders
Diseases of the endocrine system (e.g., Cushing’s disease) or congenitalCongenital means "present from birth" and refers to characteristics or conditions that are already present at birth. This can include genetic disorders, developmental anomalies, or infections transmitted by the mother. metabolicMetabolic refers to metabolism, i.e. the entirety of chemical processes that take place in a living organism to enable life processes. Metabolic disorders can cause a variety of Diseases in Dogs and cats. defects can sometimes triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats. acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure. Very strong fluctuations in fat or proteinProteins are large molecules made up of amino acids and play an essential role in almost all biological processes. They are necessary for building body tissue, the function of the immune system, and as enzymes for metabolic reactions. metabolism, caused by an uncontrolled diet, can also put stressStress refers to the state of an organism reacting to external stimuli or demands. In veterinary medicine, stress can have physical or psychological effects on animals, impacting their health and well-being. on the liver and, in rare cases, promote acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. failure.
Symptoms
The symptoms are variable and range from mild general changes to multi-organ failureMultiple organ failure is a serious condition in which several vital organ systems fail simultaneously. In dogs and cats, this can be caused by severe illness, injury, or as a result of toxicity, and is often life-threatening.. Typical are:
- ApathyApathy refers to a state of indifference and reduced interest or lack of emotional involvement in activities or events that would normally arouse interest., inappetence, Vomiting, DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems.
- Jaundice due to bilirubinBilirubin is a yellow pigment that is produced when hemoglobin from red blood cells is broken down. It is further processed in the liver and then excreted via the bile. Elevated bilirubin levels may indicate liver dysfunction or impaired bile excretion. retention
- AscitesAscites refers to the accumulation of free fluid in the abdominal cavity, which can lead to visible abdominal distension. It can be caused by various diseases, including liver disease, cancer, or heart failure. (in case of portal hypertensionHypertension, or high blood pressure, is a condition in which the blood pressure in the arteries is consistently elevated. In dogs and cats, this can lead to damage to organs such as the heart, kidneys, and eyes, and requires medical treatment. or hypoalbuminemiaHypoalbuminemia refers to a lower than normal albumin level in the blood. Albumin is an important protein found in blood plasma that performs functions such as transporting substances and maintaining osmotic pressure. Hypoalbuminemia may indicate malnutrition, liver disease, or protein loss.)
- CoagulationCoagulation is the process of blood coagulation, in which liquid blood is transformed into a solid clot. This process is crucial for stopping Bleeding and promoting wound healing. disorders (petechiae, hematomas, nosebleeds)
- Hepatic encephalopathy (disorientation, ataxia, Behavioral changes, Convulsions, comaA coma is a deep state of unconsciousness where an individual cannot be awakened and does not respond to stimuli. In dogs and cats, it can be caused by severe illnesses, poisoning, or neurological problems.)
- PolydipsiaPolydipsia refers to an increased feeling of thirst and increased fluid intake. It can be a symptom of various diseases, including diabetes mellitus and kidney disease., polyuriaPolyuria refers to a significantly increased urine output. It can be a symptom of various diseases, including diabetes mellitus, kidney disease, and hormonal disorders.
The symptoms often develop rapidly and progressively. Encephalopathy, in particular, is a dramatic indicationIndication refers to a valid reason or rationale for using a specific treatment, medication, or medical procedure. It is based on the diagnosis and the patient’s clinical condition. of advanced liver failure.
Diagnosis
An early diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is crucial to improve the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop.. Several procedures are used.
Blood tests
- Liver enzymesEnzymes are biological catalysts that accelerate specific chemical reactions in the body without being consumed. They play a crucial role in virtually all physiological processes.: Alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphataseAlkaline phosphatase is an enzyme found in various tissues of the body, including the liver, bones, and intestines. It plays a role in the process of breaking down and transporting phosphate in the body. Elevated levels may indicate a number of conditions, including liver disease and bone growth disorders. (AP), and gamma-glutamyltransferase (GGT). An increase indicates that liver cells are damaged.
- BilirubinBilirubin is a yellow pigment that is produced when hemoglobin from red blood cells is broken down. It is further processed in the liver and then excreted via the bile. Elevated bilirubin levels may indicate liver dysfunction or impaired bile excretion.: Elevated bilirubinBilirubin is a yellow pigment that is produced when hemoglobin from red blood cells is broken down. It is further processed in the liver and then excreted via the bile. Elevated bilirubin levels may indicate liver dysfunction or impaired bile excretion. levels indicate inadequate bilirubinBilirubin is a yellow pigment that is produced when hemoglobin from red blood cells is broken down. It is further processed in the liver and then excreted via the bile. Elevated bilirubin levels may indicate liver dysfunction or impaired bile excretion. processing in the liver.
- CoagulationCoagulation is the process of blood coagulation, in which liquid blood is transformed into a solid clot. This process is crucial for stopping Bleeding and promoting wound healing. parameters: Prothrombin time (PT), activated partial thromboplastin time (aPTT). Prolongation indicates problems with coagulationCoagulation is the process of blood coagulation, in which liquid blood is transformed into a solid clot. This process is crucial for stopping Bleeding and promoting wound healing. factor synthesis.
- AmmoniaAmmonia is a nitrogenous waste product of protein metabolism in the body, mainly converted to urea in the liver and excreted via the kidneys. Elevated ammonia levels in the blood may indicate liver dysfunction.: If liver function is severely impaired, the ammoniaAmmonia is a nitrogenous waste product of protein metabolism in the body, mainly converted to urea in the liver and excreted via the kidneys. Elevated ammonia levels in the blood may indicate liver dysfunction. level in the blood rises, which increases the risk of neurological deficits.
Imaging techniques
- UltrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow.: Allows the visualization of the liver structure and shows changes such as enlargement, reduction, nodules, or necrosisNecrosis is the Death of tissue in a living organism, caused by factors such as injury, infection, or lack of blood supply. Necrotic tissue can cause Inflammatory conditions and further health problems..
- CT/MRI: In special cases, for example, if tumors or special structural changes are suspected, computed tomography (CT)Computed tomography (CT) is an imaging technique that uses X-rays and computer technology to create cross-sectional images of the body. It enables a detailed view of bones, organs, and other structures and is used for the diagnosis of injuries, diseases, and for planning medical interventions. or magnetic resonance imaging (MRI)Magnetic resonance imaging is an imaging technique that uses strong magnetic fields and radio waves to create detailed images of the inside of the body. It is used in veterinary medicine to diagnose diseases of the brain, spine, and other organs. can be used.
Liver biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions.
In unclear cases or to confirm the diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients., a biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. can be helpful to examine histological changes in the liver. In acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. severe cases, however, the biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. is not always feasible because the risk of Bleeding is increased by coagulationCoagulation is the process of blood coagulation, in which liquid blood is transformed into a solid clot. This process is crucial for stopping Bleeding and promoting wound healing. disorders.
Therapy
The therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. for acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure must be fast and targeted, as any delay increases the risk of death.
Intensive Care
- Monitoring: Continuous monitoring of cardiovascular functions, breathing, and neurological status.
- Fluid therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.: Intravenous infusions to stabilize the circulation and correct electrolyte imbalances.
- Blood sugar control: In the case of xylitol poisoning, hypoglycemiaHypoglycemia is a condition in which blood sugar levels fall below the normal range. Symptoms may include tremors, sweating, Hunger, confusion, and in severe cases, loss of consciousness. is often a threat, which must be prevented by administering glucoseGlucose is a simple sugar and the body's main source of energy. The concentration of glucose in the blood is regulated to meet the energy needs of the cells..
Specific treatment of the causes
- Antibiotics: For bacterial infections such as leptospirosis, suitable antibiotics (e.g., penicillinsPenicillins are a class of antibiotics derived from the Penicillium mold. They are used to treat bacterial infections by disrupting the cell wall synthesis of the bacteria., doxycycline) are used.
- Antidotes: In the case of toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. influences such as mushroom toxins or paracetamol overdoses, antidotes (e.g., acetylcysteine) are administered.
- Discontinuing harmful medications: Suspicious drugs must be stopped immediately and replaced with liver-friendly alternatives.
SupportiveSupportive refers to supportive treatments that aim to alleviate symptoms and improve quality of life without directly treating the underlying cause of the disease. TherapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.
- Nutritional support: High-quality, easily digestible proteins in moderate amounts help not to overload the liver, but at the same time provide enough nutrients.
- Nutritional supplements: Supplements such as S-adenosylmethionine (SAMe) or milk thistle (silymarin) have shown partially positive effects on liver regeneration in studies.
- Bland diet: Special liver diets (commercially available) with adapted proteinProteins are large molecules made up of amino acids and play an essential role in almost all biological processes. They are necessary for building body tissue, the function of the immune system, and as enzymes for metabolic reactions. and fat content are often helpful to relieve the liver.
Medications for encephalopathy
- Lactose: Helps to reduce the ammoniaAmmonia is a nitrogenous waste product of protein metabolism in the body, mainly converted to urea in the liver and excreted via the kidneys. Elevated ammonia levels in the blood may indicate liver dysfunction. level in the intestineThe intestine is the medical term for the gut, including the small intestine (intestinum tenue) and the large intestine (intestinum crassum). It plays a central role in the digestion and absorption of nutrients. by changing the bacterial flora and binding ammoniaAmmonia is a nitrogenous waste product of protein metabolism in the body, mainly converted to urea in the liver and excreted via the kidneys. Elevated ammonia levels in the blood may indicate liver dysfunction..
- Antibiotics: OralOral means "through the mouth" and refers to the intake of food, medication, or other substances through the mouth. In veterinary medicine, many treatments are administered orally. antibiotics such as metronidazole reduce ammonia-producing intestinalIntestinal refers to the intestine, the part of the digestive tract that extends from the stomach to the anus. Intestinal diseases affect the small and/or large intestine. bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease..
- SedativesSedatives are medications used to reduce Nervousness, anxiety, or Agitation and to achieve a calming effect. They are used in dogs and cats for various medical procedures or to calm them in stressful situations. or antiepileptics: For seizures or severe tremors, medications such as diazepam can be used.
Clotting factors
- VitaminVitamins are organic compounds that are necessary in small amounts for the normal growth, development, and physiological function of the body. Vitamins must mostly be obtained through food, as the body cannot produce them or not in sufficient quantities. K administration: In the case of a deficiencyDeficiency means a lack or absence of a necessary substance required for normal bodily functions or health, such as vitamins, minerals, or hormones. of clotting factors, vitaminVitamins are organic compounds that are necessary in small amounts for the normal growth, development, and physiological function of the body. Vitamins must mostly be obtained through food, as the body cannot produce them or not in sufficient quantities. K is essential to improve blood clotting.
- PlasmaPlasma is the liquid part of blood in which blood cells are suspended. It contains water, salts, proteins, and other substances and serves as a transport medium for nutrients, hormones, and waste products. transfusion: In severe cases with massive Bleeding, the transfusion of fresh plasmaPlasma is the liquid part of blood in which blood cells are suspended. It contains water, salts, proteins, and other substances and serves as a transport medium for nutrients, hormones, and waste products. can quickly increase the clotting factors.
Prognosis and follow-up care
The prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. for acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure depends heavily on the underlying cause, the degree of liver damage, and the speed of therapeutic measures. With timely treatment and successful therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions., some dogs can recover completely. In other cases, the acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. form turns into a chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. course in which the liver remains permanently damaged. Without rapid treatment, however, acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure can be fatal.
Prevention
The preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. of acute liver failure is based primarily on protecting the liver from toxins and infections. Dogs should not have access to hepatotoxic substances such as certain medications (e.g., paracetamol), poisonous plants, or molds. Regular vaccinations, especially against leptospirosis, reduce the risk of infectiousInfectious describes the ability of a pathogen to be transmitted from one individual to another and trigger an infection. It also refers to diseases caused by such pathogens. liver diseases. A balanced diet and a healthy body weight relieve the liver. In the case of chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. liver problems, close monitoring is important to detect acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. deteriorations early. A veterinarian should also be consulted immediately in the event of sudden loss of appetite, Vomiting, or jaundice to prevent irreparable damage.
Outlook on current research
Research focuses on the development of hepatoprotective substances, early markers for hepatotoxic damage (e.g., microRNA), regenerative therapies (e.g., stem cell therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.), and the establishment of liver replacement systems. The role of intestinal dysbiosis in liver diseases (“gut-liver axis”) is also being increasingly investigated. Animal models for acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure in dogs are also important components of translational studies in comparison to human medicine.
Frequently asked questions (FAQs)
- How dangerous is acuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. liver failure?
Very dangerous. It is a medical emergency with a high mortalityMortality is the death rate within a population over a specific period. It is often used to assess the severity of diseases or the effectiveness of health measures. risk. - Can the liver recover completely?
Yes, if a large proportion of the hepatocytes are preserved and the cause is eliminated. - Which medications are hepatotoxic?
Paracetamol, phenobarbital, ketoconazole are particularly dangerous – use only with caution and control. - Is liver failure contagiousContagious means infectious. Diseases that can easily be transmitted from one animal to another or from animals to humans are referred to as contagious.?
Only in the case of infectiousInfectious describes the ability of a pathogen to be transmitted from one individual to another and trigger an infection. It also refers to diseases caused by such pathogens. causes such as leptospirosis is there also a risk of zoonosisA zoonosis is a disease or infection that can be naturally transmitted from animals to humans. Examples include rabies, Lyme disease, and avian influenza..
When to visit the vet?
Emergency see a veterinarian immediately
If the condition worsens / symptoms persist, consult a veterinarian.