Arterial Hypertension (Systemic Hypertension) in Dogs
- Synonyms: High blood pressure, arterial hypertension, aHT
- Occurrence: common
- Location of disease: General/Whole body
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days
If the condition worsens / symptoms persist, consult a veterinarian.
Definition
Arterial 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. in dogs, also known as systemic 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., is a condition in which blood pressure in the arteries is chronically elevated. This condition can lead to serious health problems if left untreated.
The most important facts at a glance
Arterial Hypertension in dogs arises from a disruption in the regulation of cardiac output, vascular resistanceResistance refers to the ability of microorganisms to withstand the effects of antibiotics, antifungals, or other antimicrobial drugs. Resistance can also refer to the body's ability to be insensitive to diseases or toxins., and blood volumeBlood volume is the total amount of blood circulating in an organism's circulatory system. Changes in blood volume can indicate various health conditions, including dehydration or cardiovascular disease.. PrimaryPrimary refers to the first or original cause of a disease or condition, as opposed to secondary causes or symptoms that develop from it. 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. is rare and occurs without an identifiable cause, while secondary 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. is more common and is caused by underlying diseases such as 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. kidney diseases, Cushing’s syndromeA syndrome is a group of symptoms that occur together and indicate a specific disease or condition. A syndrome can be caused by various factors and is often complex in its diagnosis and treatment., or diabetes mellitus. Symptoms can range from Restlessness and Panting to more severe signs like retinal detachment or Blindness. 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 made by measuring blood pressure in a stress-free environment, as well as through blood and urine tests to identify underlying causes. 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. aims to treat the underlying disease but may also include blood pressure-lowering medications such as ACE inhibitorACE inhibitors are medications that inhibit angiotensin-converting enzyme, thereby lowering blood pressure. They also have a protective effect on the kidneys. They are used in dogs and cats to treat heart disease, high blood pressure, and certain kidney diseases. and calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. channel blockers. A low-salt diet and weight reduction can also help. 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. depends on the cause and timely 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., with untreated 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. potentially leading to complications. Preventive measures focus on avoiding underlying diseases through regular veterinary examinations, a balanced diet, and a healthy body weight. Research into arterial 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. in dogs investigates risk factors, genetic predispositions, and the optimization of 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. methods to improve the quality of life for affected dogs.
Causes
Arterial blood pressure is regulated by the interplay of cardiac output, vascular resistanceResistance refers to the ability of microorganisms to withstand the effects of antibiotics, antifungals, or other antimicrobial drugs. Resistance can also refer to the body's ability to be insensitive to diseases or toxins., and blood volumeBlood volume is the total amount of blood circulating in an organism's circulatory system. Changes in blood volume can indicate various health conditions, including dehydration or cardiovascular disease.. In dogs, as in humans, a certain blood pressure is necessary to supply the body with sufficient oxygen and nutrients. Blood pressure is measured in millimeters of mercury (mmHg) and consists of two values: systolic and diastolic pressure. Systolic pressure is the higher value and occurs when the heart pumps blood into the arteries; diastolic pressure is the lower value, indicating the pressure between heartbeats.
Normally, blood pressure is kept in balance by various mechanisms in the body. These include the nervous system, hormonal controls, and kidney function. If one of these control mechanisms is disturbed, it can lead to a permanent increase in blood pressure.
The causes of arterial 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. in dogs can be primaryPrimary refers to the first or original cause of a disease or condition, as opposed to secondary causes or symptoms that develop from it. or secondary. PrimaryPrimary refers to the first or original cause of a disease or condition, as opposed to secondary causes or symptoms that develop from it. 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., also called essential 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., occurs without an identifiable cause and is rare in dogs. More common is secondary 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., which is the result of an underlying disease.
Common causes of secondary hypertension in dogs include 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. kidney diseases, endocrine disorders such as Cushing’s syndromeA syndrome is a group of symptoms that occur together and indicate a specific disease or condition. A syndrome can be caused by various factors and is often complex in its diagnosis and treatment., and diabetes mellitus. Certain medications and a diet too high in salt can also increase blood pressure. In some cases, Overweight can also contribute to high blood pressure.
Symptoms
The symptoms of arterial 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. in dogs are often non-specific and can be easily overlooked. Owners often only notice symptoms when complications have already occurred. Possible symptoms include increased Lethargy, RespiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. distress, nosebleeds, and behavioral changes, such as sudden Aggressiveness or confusion.
Further symptoms may include reduced vision or even Blindness, as the increased pressure can damage the blood vessels in the retinaThe retina is the light-sensitive layer at the back of the eye that captures visual information and transmits it to the brain via the optic nerve. Retinal diseases can lead to vision loss in dogs and cats. of the eyes. In severe cases, neurological symptoms such as seizures can occur if the elevated blood pressure affects the brain vessels.
The combination of thirst and increased urination (polyuriaPolyuria refers to a significantly increased urine output. It can be a symptom of various diseases, including diabetes mellitus, kidney disease, and hormonal disorders. and 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.), nosebleeds, or sudden vision problems is suspicious.
Diagnosis
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. of arterial 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. in dogs is primarily made by measuring blood pressure. This measurement should take place in a quiet environment, as 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. can distort blood pressure readings. There are special blood pressure monitors for animals that allow for gentle and accurate measurement.
To confirm a 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., several measurements on different days are often necessary. A single elevated reading can be caused by 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. or excitement and does not necessarily indicate 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. 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..
In addition to blood pressure measurement, the veterinarian will usually perform blood and urine tests to identify possible underlying causes such as kidney disease or hormonal disorders. An 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. examination of the kidneys or an ECG can also be helpful to support 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. and determine the extent of the disease.
Therapy
The therapy for arterial hypertension in dogs depends on the underlying cause. If an underlying disease, such as kidney disease or a hormonal imbalance, is responsible, this is treated primaryPrimary refers to the first or original cause of a disease or condition, as opposed to secondary causes or symptoms that develop from it.. In many cases, this can lead to a normalization of blood pressure.
If a specific cause cannot be identified, or if 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. persists despite treatment of the underlying disease, blood pressure-lowering medications are used. These include ACE inhibitorACE inhibitors are medications that inhibit angiotensin-converting enzyme, thereby lowering blood pressure. They also have a protective effect on the kidneys. They are used in dogs and cats to treat heart disease, high blood pressure, and certain kidney diseases., which dilate blood vessels and thus lower blood pressure, as well as calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. channel blockers, which reduce muscle tension in the vessel walls.
In addition to drug treatment, dietary adjustments can be helpful. A low-salt diet can have a positive effect on blood pressure. In some cases, weight loss in overweight dogs can also have a positive effect on blood pressure.
Prognosis and follow-up care
The prognosis for dogs with arterial 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. depends heavily on the underlying cause and timely diagnosis. If an underlying disease can be successfully treated, 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 often good. For 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. conditions that are not fully curable, long-term 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. may be necessary to control blood pressure and prevent complications.
Untreated, arterial 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. can lead to serious complications such as heart, kidney, and eye damage. Therefore, 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. 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. are crucial for a good quality of life for the affected dog.
Prevention
Since primary 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. is rare in dogs, preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. measures primarily focus on avoiding and controlling underlying diseases that can cause secondary 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.. Regular veterinary examinations are crucial to detect and treat conditions such as kidney problems or endocrine disorders early.
A balanced diet and a healthy body weight can also help reduce the risk of high blood pressure. A low-salt diet and regular exercise are important factors in keeping the cardiovascular system healthy.
For dogs who already suffer from diseases that increase the risk of high blood pressure, regular monitoring of blood pressure by the veterinarian is advisable in order to intervene early.
Outlook on current research
Research into arterial 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. in dogs has gained importance in recent years, as this condition often goes unrecognized and can have serious health consequences. The focus of current studies is on identifying risk factors and genetic predispositions that make dogs more susceptible to high blood pressure. Scientists are also investigating the effects of high blood pressure on various organ systems, particularly the kidneys, heart, and eyes, to improve the understanding of disease progressionProgression refers to the advancement or worsening of a disease over time. It describes an increase in the severity or extent of the disease symptoms..
A number of studies are currently testing the effectiveness of various drug therapies, including the use of ACE inhibitorACE inhibitors are medications that inhibit angiotensin-converting enzyme, thereby lowering blood pressure. They also have a protective effect on the kidneys. They are used in dogs and cats to treat heart disease, high blood pressure, and certain kidney diseases., calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. channel blockers, and other blood pressure-lowering medications commonly used in human medicine. Researchers are trying to find out which medications are most effective and how they can best be integrated into 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. protocols. Optimizing dosage and minimizing side effects are also central topics of ongoing research.
Another promising research area is the development of non-invasive 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. methods. Currently, blood pressure in dogs is often measured with inflatable cuffs, which can be stressful and distort measurement results. New technologies and procedures could enable more accurate and less burdensome measurements for the animal in the future. In addition, research is being conducted on how regular blood pressure measurements can be integrated into routine examinations to promote early detection of the disease.
Genetic research also offers interesting opportunities to understand the susceptibility of certain breeds to high blood pressure. By identifying genetic markers and changes, targeted breeding programs could be developed in the future that reduce the risk of inheritance of this disease. Some studies also deal with epigenetic factors that influence gene expression and may contribute to the development of high blood pressure.
In summary, research into arterial 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. in dogs aims to improve both 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 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.. Through a better understanding of the underlying mechanisms and the development of new technologies, significant progress could be made in the coming years, which could significantly improve the quality of life of affected dogs.