Arrhythmias occur when there is a disruption in how the electrical signal develops or moves throughout the heart. Factors that can cause arrhythmias include:
- The heart's natural pacemaker (sinoatrial node) develops an abnormal rate or rhythm.
- Injury or illness makes it difficult or impossible for electrical signals to move through the heart. Injury or illness may occur due to:
- Electrical stimulation arises from abnormal areas of the heart, other than the sinoatrial node.
- Stimulants—Makes the heart beat faster even though there is no need.
- Electrolyte abnormalities—Can increase or decrease the ability for muscles to contract and change ability of nerves to send signals.
External factors that are associated with arrhythmias include:
Last reviewedDecember 2013by Michael J. Fucci, DO
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.