welcome to disease section for arrhythmia 

Illustration of different types of irregular heart rhythms
Illustration of different types of irregular heart rhythms

An ECG is a visual representation of the heartbeat. It can help doctors diagnose heart disorders, such as arrhythmia and other disturbances. The image shows electrocardiograms indicative of different types of irregular heart rhythms.

Cardiac arrhythmia irregular heart beat)
Cardiac arrhythmia irregular heart beat)

Atrial fibrillation is an irregular rapid heart rate that can increase your risk of heart-related complications. During atrial fibrillation, your heart's two upper chambers beat out of coordination with the two lower chambers.

Normal and abnormal heart beats
Normal and abnormal heart beats

Heart arrhythmia, also known as irregular heartbeat or cardiac dysrhythmia, is a group of conditions where the heartbeat is irregular - too slow or too fast. Arrhythmias are classified into various types such as slow heartbeat (called bradycardia) and fast heartbeat (called tachycardia), and irregular heartbeat (called flutter or fibrillation).

Cardioversion in people with abnormal heartbeats (arrhythmias)
Cardioversion in people with abnormal heartbeats (arrhythmias)

Image shows placement of defibrillator electrode paddles to perform cardioversion on a patient with cardiac arrhythmia. Cardioversion is a medical procedure that is used to restore a normal heart rhythm in people with certain types of abnormal heartbeats (called arrhythmias). Cardioversion is generally done by sending electric shocks to the heart through electrodes tied to your chest.

Pacemaker (ICD or Implantable Cardioverte Defibrillator or Pulse Generator)
Pacemaker (ICD or Implantable Cardioverte Defibrillator or Pulse

Implantable cardioverter defibrillator (ICD) consist of a pulse generator, pacing or sensing electrodes, and defibrillation coils. Its function is similar to a pacemaker.  An ICD is a battery-powered device placed under the skin to monitor your heart rate. It includes wires that connect the ICD to your heart. If it detects an abnormal heart rhythm, an electric shock is sent to restore a normal heartbeat.

Pacemaker implant
Pacemaker implant

A pacemaker insertion is the implantation of a pacemaker into the chest just below the collarbone to regulate your electrical problems of the heart. It is done under the effect of a sedative and a local anesthetic at the insertion site. 

Atrial fibrillation causing stroke
Atrial fibrillation causing stroke

A blood clot is the most common cause of stroke. Atrial fibrillation increases the risk of stroke because blood may not be properly pumped out of the heart. This may cause it to aggregate and form a clot. The clot can then travel to the brain and block the flow of blood to the brain (at least partially) resulting in a stroke.

Chest x-ray image of a permanent pacemaker implanted in the chest of a patient
Chest x-ray image of a permanent pacemaker implanted in the chest of

Having a pacemaker implanted is a straightforward process. It's generally performed under local anaesthetic, and you'll be awake during the procedure. The signal  generator is usually placed under the skin near the collarbone on the left side of the chest.

The electrical conducting system of the heart
The electrical conducting system of the heart

he electrical conduction system of the heart transmits signals generated by the sinoatrial node to cause contraction of the heart muscle. The signal generated in the sinoatrial node travels through the right atrium to the atrioventricular node, along the Bundle of His and through bundle branches to cause contraction of the heart muscle.

Open heart surgery
Open heart surgery

An image of a patient taken 12 days after open heart surgery. The picture shows scars where the sternum was cut in two parts, and the rib cage sprung. Just below the scar, there are holes that show locations where the drains and pacemaker cables emerged.

Heart diseases
Heart diseases

Heart disease is a term that covers a range of disorders that affect the heart. Coronary artery disease is the most common type of heart disease.