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Conduction Disorders - Risk Factors - Risk Factors

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You may have an increased risk for conduction disorders because of your age, family history and genetics, medical conditions, medicines, race or ethnicity, or sex. These factors can differ by the type of conduction disorder you have.

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\n Age \n
- Conduction Disorders - Risk Factors

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Conduction disorders can happen at any age, but some are more common at certain ages. For example, SSS and bundle branch blocks are more common in older adults due to fibrosis and changes in the conduction system that happen as a result of aging.

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\n Family history and genetics \n
- Conduction Disorders - Risk Factors

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Your family history can increase your risk for a conduction disorder. Even when it is not known exactly how a conduction disorder is inherited , some disorders are more common among families, including:

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  • Brugada syndrome
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  • Complete heart block or third-degree AV block, in children born to mothers who have a connective tissue disease
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  • Wolff-Parkinson-White syndrome
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\n Other medical conditions \n
- Conduction Disorders - Risk Factors

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Some medical conditions may increase your risk for a conduction disorder, including the following.

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  • Autoimmune diseases, such as scleroderma, systemic lupus erythematosus, and rheumatoid arthritis
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  • Cardiomyopathy
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  • Complications of a heart surgery or procedure, including heart valve replacement, procedures to treat ischemic heart disease, surgery to correct a congenital heart defect at birth, and radiation treatment for cancer. The damage to the conduction system may be caused by physical damage during the surgery or procedure, or from damage due to swelling, lack of blood flow, or hematoma.
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  • Diseases in which there are deposits of abnormal substances in the heart, such as amyloidosis, hemochromatosis, and sarcoidosis
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  • endocrine conditions, such as hypothyroidism
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  • Heart inflammation, such as in myocarditis and pericarditis
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  • High blood pressure
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  • Neuromuscular disorders such as muscular dystrophy
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  • Sleep apnea
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\n Medicines \n
- Conduction Disorders - Risk Factors

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Some medicines may increase your risk for developing a conduction disorder, including the following.

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  • Antiarrhythmics to treat abnormal heart rhythms, such as quinidine, flecainide, sotalol, and amiodarone
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  • Antidepressants and antipsychotic medicines
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  • Diuretics, which are medicines that remove excess water from your body
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  • Heart medicines, such as beta blockers, calcium channel blockers, and digoxin
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  • High blood pressure medicines, including clonidine and methyldopa
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  • Lithium
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  • Muscle relaxants and sedatives
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\n Race or ethnicity \n
- Conduction Disorders - Risk Factors

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Brugada syndrome is especially common in people of Asian descent, particularly those of Japanese, Filipino, and Thai ancestry.

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\n Sex \n
- Conduction Disorders - Risk Factors

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The following conduction disorders are more common in men than in women:

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  • Brugada syndrome
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  • Catecholaminergic polymorphic ventricular tachycardia
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Syndicated Content Details:
Source URL: https://www.nhlbi.nih.gov/subscribe/4310
Source Agency: National Heart, Lung, and Blood Institute (NHLBI)
Captured Date: 2019-08-08 15:03:00.0
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