Heart Disease in Dogs: How to Recognize the Signs and Help Your Pet

If your dog has been experiencing a chronic cough, this could be one of the first indicators of heart disease. Heart disease is a serious condition that affects many dogs, especially as they age. In this article, I’ll walk you through the five most common signs of heart disease in dogs and offer some alternative options to help manage the condition.

Five Common Signs of Heart Disease in Dogs

Heart disease in dogs can manifest in several ways, with varying degrees of severity. Here are the most common symptoms to look out for:

1. Persistent Cough

Dogs with heart disease often experience coughs that don’t resolve within a few days. The underlying cause is often fluid accumulation in the lungs, as the heart struggles to pump efficiently. This backup of blood can cause fluid to leak from blood vessels into the lung tissue, resulting in coughing. Additionally, heart enlargement can press on the airways, leading to coughing as well. Any cough that lasts for more than a few days should be evaluated by a veterinarian.

2. Fainting or Collapse

As heart function decreases, vital organs like the brain may not receive enough oxygen or nutrients. This can cause fainting (syncope) or collapse. Fainting episodes are often triggered by exercise or even coughing in dogs with heart disease.

3. Difficulty Breathing

Dogs with heart disease may experience breathing difficulties (dyspnea). They may breathe more rapidly or forcefully. Some dogs may sit or stand with their legs spread apart and neck extended. In more severe cases, dogs struggle to breathe when lying down, opting to stay in a sitting or standing position for longer periods of time.

4. Fatigue and Inability to Exercise

Dogs suffering from heart disease often tire easily during walks or exercise. They may sleep or rest more than usual and show a reduced interest in physical activity.

5. Behavioral Changes

Heart disease can lead to various behavioral changes, such as a poor appetite, increased isolation, and reluctance to engage in activities that your dog once enjoyed.

Diagnosing Heart Disease in Dogs

The symptoms of heart disease can resemble other conditions, such as arthritis, seizures, and chronic lung disease. Your veterinarian will conduct a thorough assessment, including a detailed medical history and diagnostic tests, to determine the underlying cause. Some of the diagnostic tools that can be helpful in diagnosing heart disease include:

Chest X-ray

X-rays are an effective way to assess the size of the heart and detect fluid build-up in and around the lungs.

Electrocardiogram (ECG)

An ECG is the best method for detecting irregular heart rhythms (arrhythmias). Sometimes, a veterinarian may use a Holter monitor to monitor your dog’s heart rate over a few days to detect irregularities.

Echocardiogram

An echocardiogram, which uses ultrasound technology to examine the heart, is a non-invasive and highly effective tool for diagnosing heart disease. It provides valuable information about the heart’s function and helps guide treatment decisions.

Alternative Options for Managing Heart Disease

In addition to traditional treatments, there are several natural remedies that can help manage heart disease in dogs:

1. Dandelion

Dandelion is a safe diuretic that can help with fluid retention, a common issue in heart disease. The recommended dose is 1ml of tincture per 20 lbs of body weight, given daily or as needed. Dandelion also helps replenish potassium, which is often lost with diuretic medications like furosemide (Lasix).

2. Hawthorn

Hawthorn is known to enhance heart function by improving the heart’s ability to contract and dilating the blood vessels, making it easier for the heart to pump. The recommended dose is 1/2 ml per 20 lbs of body weight, given twice daily.

3. Coenzyme Q

Coenzyme Q is an antioxidant that helps protect the heart muscle from damage. It has been shown to be effective in humans and animals. The recommended dose is 5 mg per 10 lbs of body weight.

4. Omega-3 Fatty Acids

Omega-3 fatty acids, particularly those found in krill oil, can strengthen a failing heart by making it easier to beat, reducing the severity of arrhythmias, and lowering blood pressure. They also help prevent blood clots. The recommended dose is 500mg per 25 lbs of body weight, given daily.

5. Taurine

A recent study found that taurine supplements, when combined with a diet switch from grain-free to traditional food, helped improve dogs diagnosed with dilated cardiomyopathy (DCM). Taurine is essential for heart health, and the recommended dose is 500 mg per day for dogs up to 50 lbs.

Final Thoughts on Heart Disease in Dogs

Heart disease is a serious condition, but with early detection and appropriate treatment, dogs can live a quality life for many years. If you notice any of the signs of heart disease in your dog, it’s important to consult with your veterinarian as soon as possible. They can help diagnose the issue and recommend the most suitable treatment plan.

If you’re looking for additional ways to support your dog’s heart health, consider using supplements like those mentioned above. As a holistic veterinarian, I recommend incorporating natural remedies alongside traditional therapies for the best results.

P.S. Taurine is particularly important for dogs with DCM linked to diet. It’s included in my Ultimate Canine Advanced Plus supplement, which you can learn more about here: Ultimate Canine Advanced Plus.