Low Blood Pressure (Hypotension) in Dogs
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Emergency see a veterinarian immediately
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Definition of
Hypotension in dogs refers to a condition in which the animal’s blood pressure falls below the normal range, which can lead to inadequate blood flow to vital organs.
BASICS/CAUSES:
Blood pressure is an essential measure of a dog’s health and depends on the amount of blood the heart pumps as well as the resistance of the blood vessels. Low blood pressure, also known as hypotension, can be caused by various factors resulting from either physical changes or external influences.
One of the most common causes of hypotension is dehydration, which can occur due to insufficient water intake, increased fluid loss (dehydration) through vomiting or diarrhea, or excessive sweating. Similarly, blood loss, whether through internal bleeding or external injuries, can lead to a significant drop in blood pressure.
Heart problems that impair the heart’s ability to pump, such as heart failure or heart valve defects, can also lead to low blood pressure. In addition, certain medications, especially those used to treat high blood pressure or heart disease, can cause hypotension as a side effect.
Finally, endocrine problems such as adrenal insufficiency, also known as Addison’s disease, can negatively affect blood pressure. In this condition, the body does not produce enough steroid hormones, which can lead to a variety of symptoms, including low blood pressure.
Can Occur with the Following Diseases:
- Twisted Intestine in Dogs (Volvulus)
- Stomach or Duodenal Ulcers in Dogs (Gastric and Duodenal Ulceration)
- Bacterial Intestinal Infection caused by Clostridium piliforme in Dogs (Tyzzer's Disease)
- Traumatic Myocard Inflammation in Dogs (Traumatic Myocarditis)
- Bacterial Bloodstream Infection in Dogs (Septicemia/Bacteremia)
- Salmonella Infection of the Intestine in Dogs (Salmonella Infection)
- Life-Threatening Circulatory Shock Due to Severe Infection in Dogs (Septic Shock)
- Streptococcal Bacterial Infection in Dogs (Streptococcus Infection)
- Bacterial Arthritis in Dogs (Septic Arthritis)
- Uterine infection and cystic changes of the uterine lining in dogs (Pyometra and Cystic Endometrial Hyperplasia)
- Retained Placenta in Dogs (Retentio Secundinarum)
- Fluid Around the Heart in Dogs (Pericardial Effusion)
- Pancreatic Inflammation in Dogs (Pancreatitis)
- Canine Parvoviral Enter Inflammation Infection in Dogs (Canine Parvoviral Enteritis)
- Inflammation of the Heart Sac in Dogs (Pericarditis)
- Abdominal Lining Inflammation in Dogs (Peritonitis)
- Bone Marrow Infection in Dogs (Osteomyelitis)
- Ruptured Heart Muscle in Dogs (Myocardial Rupture)
- Medical Condition in Dogs (Hypovolemic Shock)
- Hemolytic Transfusion Reaction in Dogs (Hemolytic Transfusion Reaction, HTR)
- Bacterial infection with a resistant staphylococcal species in dogs (Methicillin-resistant Staphylococcus aureus infections, MRSA)
- Underactive adrenal cortex in dogs (hypoadrenocorticism, Addison’s disease)
- Staphylococcal Infection in Dogs (Staphylococcus Infection)
- Medical Condition in Dogs (Cardiogenic Shock)
- Acute Respiratory Distress Syndrome in Dogs (ARDS)
- Bile Duct Cancer in Dogs (Cholangiocarcinoma)
Typische Begleitsymptome
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Weakness: A dog with hypotension may appear weak or lethargic because the muscles and brain are not getting enough blood flow, leading to a lack of energy and coordination.
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Collapse: In severe cases, a dog may collapse due to insufficient blood flow to the organs, which is an emergency.
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Pale gums: The dog may have pale or whitish gums, a sign of poor circulation and tissue oxygenation.
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Rapid heart rate: The body may try to compensate for the low blood pressure by increasing the heart rate, often leading to a rapid or irregular heartbeat.
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Cool extremities: With hypotension, blood flow to the peripheral parts of the body such as paws and ears can be reduced, leading to a cool temperature in these areas.
Wann zum Tierarzt?
A visit to the vet is urgently required if a dog shows signs of hypotension, especially if these symptoms appear suddenly or worsen quickly. Since hypotension can be a symptom of a serious underlying condition, it is crucial to identify and treat the cause quickly.
An immediate vet visit is necessary if the dog collapses, shows signs of confusion, or has noticeably pale gums. These symptoms can indicate a life-threatening situation that requires immediate medical intervention.
Symptomerkennung für den Tierhalter und tierärztliches diagnostisches Vorgehen
It can be difficult for pet owners to diagnose hypotension on their own, as the symptoms are often non-specific and can point to various health problems. However, regularly checking your dog’s general condition, including observing changes in behavior, appetite, and energy levels, can provide signs that warrant a closer look.
The vet will likely perform a thorough clinical examination, including measuring blood pressure with a special device designed for animals. Further tests such as blood work, X-rays, or ultrasound may be necessary to determine the cause of the hypotension and initiate appropriate therapy.
Was kann der Tierhalter tun und professionelle Therapieoptionen
Until a vet can be consulted, the dog should be kept calm and warm to prevent stress and further strain on the circulatory system. It is important to give the dog access to fresh water to prevent or alleviate possible dehydration.
Avoid giving the dog any medication without veterinary instructions, as this could make the situation worse. Instead, the focus should be on monitoring the dog and ensuring it is not exposed to further unnecessary strain or stressors until professional help is available.