Junctional rhythm ECG is an electrical activity of the heart, which is measured using an electrocardiogram ECG. It occurs when the electrical impulse that normally begins in the sinoatrial SA node, or heart’s natural pacemaker, originates in another area of the heart called the atrioventricular AV node. This results in a slower than normal heartbeat.
How Is Junctional Rhythm Detected?
The AV node can be detected on an ECG by looking for a distinctive pattern of waves. The waveform should show a narrow QRS complex followed by a short PR interval and then a P wave. If this pattern is present on an ECG, it indicates that junctional rhythm may be present and further testing may be needed to confirm diagnosis.
What Causes Junctional Rhythm?
A variety of conditions can lead to junctional rhythm including disease processes such as coronary artery disease, infections, electrolyte imbalances and certain medications. It can also be caused by trauma or surgery to the chest area or due to congenital defects in cardiac tissue.
What Are The Symptoms Of Junctional Rhythm?
In many cases there are no symptoms associated with junctional rhythm but some people may experience palpitations or lightheadedness if their heart rate slows too much.