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Can Lyme Disease Really Impact the Heart?

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Lyme disease is a complex of infections that are transmitted by deer ticks and other insects. It can cause general flu-like symptoms as well as joint and muscle pain, fatigue, cognitive problems, and more. Cardiac symptoms occur, by some estimates, in less then 10% of Lyme cases, usually when treatment is omitted or delayed (one month or more after the tick bite).

Lyme Disease and Heart Symptoms

One bacteria involved in Lyme, Borrelia, can invade the heart muscle and cause heart symptoms, including a condition known as Lyme carditis, or infection of the heart tissues. If left untreated, it can cause heart block, which results when the electrical signal of the heart (that causes the heart to contract) gets interrupted. This can occur in varying degrees of severity, designated as first, second, and third degree heart block. If you experience any chronic Lyme disease symptoms that seem heart-related, don’t let it go. You should notify your physician so they can be evaluated for cardiac complications. Symptoms may include:

  • Palpitations
  • Dizziness
  • Fainting
  • Shortness of breath
  • Swelling of feet or hands

Third degree heart block, called atrioventricular block, is the most severe and may require the implantation of a pacemaker, which regulates the heartbeat and restores the normal function of the heart.

When the conduction of the heart’s electrical signal is not working properly, abnormal heart rhythms can occur. One of the most common is atrial fibrillation (AFib), in which the heart beats very fast and causes palpitations, dizziness, and difficulty breathing.

AFib is treated with medication to regulate the heartbeat and help the heart pump more efficiently. Also, blood-thinning medication is usually required because blood can pool in the heart when the heart is pumping too fast. Clots that form in the heart can travel to the lungs, causing a pulmonary embolism, or to the brain, causing a stroke.

If a patient has pre-existing heart disease, a procedure called cardiac catheterization may be needed to open clogged arteries of the heart so blood flow to the heart is improved. Coronary artery bypass graft is a surgical procedure performed when multiple arteries are too clogged and must be repaired through “open heart” surgery.

If the heart valves (which separate the four chambers of the heart) are damaged through a Lyme infection or preexisting heart disease, valve replacements can also be performed.

After cardiac surgery, it is recommended that patients participate in a cardiac rehabilitation program where the heart is monitored as patients engage in physical therapy exercises to strengthen the heart.

If heart function becomes impaired to the point where the heart does not pump enough blood to the rest of the body, congestive heart failure may occur. This is uncommon, as treatment with antibiotics usually prevents cardiac involvement. With congestive heart failure, blood flow backs up instead of going forward from the heart to the rest of the body. This can result in swelling in the lungs or body, mostly seen in the hands, abdomen, legs, or feet.

Treatment for Heart-Related Conditions

Treatment for congestive heart failure includes medications to treat infections and to help the heart pump more efficiently by removing the extra fluid that accumulates in the body. Patients are instructed to monitor themselves for lung congestion, shortness of breath, swelling, and weight gain. Hospitalizations may be required if shortness of breath, excessive swelling, or increased weight gain occurs.

A low sodium diet is recommended for any type of heart disease because salt in the diet can cause fluid retention, which makes the heart work harder and increases blood pressure. Patients should use salt substitutes and avoid foods high in sodium, such as frozen prepared meals, deli meat, breakfast meat, fast food, and boxed or canned foods. A “heart-healthy” diet is recommended, which includes whole grains, fresh fruits and vegetables, and meats low in saturated fat (poultry, fish, and lean beef). Foods high in sugar and saturated fat should also be avoided.

Tests which might be used to determine the degree of cardiac involvement are lab work, electrocardiogram, echocardiogram, chest x-ray, and MRI. Sometimes a biopsy of the heart tissue is taken for evaluation. Treatment is based on the severity and degree of symptoms.

The good news is that heart complications are uncommon (seen in less than 10% of Lyme cases) and can be avoided if Lyme disease is treated with effective antibiotics early, preferably within the first month. Not all cardiac complications result in congestive heart failure if treated promptly. If heart complications do occur, many times medications and a heart healthy diet are effective for helping Lyme disease patients to have a long and satisfactory quality of life.

This article was first published on ProHealth.com on February 22, 2016 and was updated on March 09, 2020.


Laurie Miller is an author, wife, mom, registered nurse, and patient with chronic illness. She enjoys spending time with family, reading, and blogging at God-Living with Chronic Illness.

 

 

References:

Krause PJ, Bockenstedt LK. Lyme Disease and the Heart. Circulation. 19 Feb 2013. 2013;127:e451–e454

 

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3 thoughts on “Can Lyme Disease Really Impact the Heart?”

  1. bettyg says:

    Laurie, well done! i learned a lot from your article.

    I saw my late dad who was NEVER diagnosed or treated for lyme/co-infections for at least 80 yrs. of his 86 yrs. on earth.

    he had so many of the things you described beautifully above including 2 heart valve replacements, congestive heart failure for 20+ years, fluids on lungs/heart, and the list goes on.

    thank you for educating me well on my late dad and even my young 28 yr. old niece who just had a MILD HEART ATTACK damaging her heart valve and released from the hospital TODAY!

    a grateful bettyg, iowa activist
    47 yrs. chronic lyme
    35 yrs. MISDIAGNOSED by 40-50 drs.
    unacceptable

  2. CheshireCat12$ says:

    Laurie – Thank you for a beautiful article in Lyme disease and how it can affect the heart. I think I have gone to stage three in Heart block because I have had to have a pacemaker installed. I tried to explain to the Heart doctors about my Lyme disease and how this may be why I had to have a pacemaker installed, but I have had no response from them. They would just listen and not say anything. I have had a dry cough too, which leads me to believe that my lungs are being affected now. I feel that the only doctor that will listen to me would be my original MD who found out I had Lyme disease about ten years ago. Thankfully I was treated with antibiotics for about a year and a half. But I could have still had some of the Borrelia bacteria in my body which could have caused the electrical signaling in my heart to go haywire. I had a loop recorder installed in my chest originally because I was having fainting episodes and did not know why. There is no record of heart disease in my family. The doctors then found out that my heart was stopping and that was why I was fainting so they said I needed a pacemaker installed, which I had done. Now I feel much better, but I still have these dry coughs which I am thinking might be because of something going on regarding my lungs. Maybe small blood clots that have formed in the heart and are traveling to my lungs. I’m a little scared. But I will contact my doctor and see if taking antibiotics can help or if I will need to go to my heart doctor again. Thanks so much for your article. Cynthia Weems

  3. GIVEMEFREEDOM says:

    I too think there is a definite connection between Lyme disease and afib.
    I was diagnosed with Lyme’s disease years ago. I Traveled to Cleveland Clinic for afib diagnosis. They knew nothing then and had no answers other than I was not a suitable patient to receive ablation. I was sent home to Texas to work it out with my local cardiologist.
    Now in 2018 just completed ER stroke treatment and 3 weeks rehab and still dealing with afib looking for a way to heal my sinoatrial node.
    So far I haven’t found that special place with that special Dr. that has that special treatment.
    There has to be a special afib diagnostician out there some where just as there was a Lyme disease specialist who was willing to test for Borellia Bhurgdorferi and prescribe the heavy doses and intricate combination of antibiotics to kill the Lyme spirochete.

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