Sometimes, the heartbeats reduce up to 20-45 per minute. This can happen when the SA node fails to generate impulse or AV node does not conduct the beat formed in SA node to the ventricles. Dizziness or blurred vision (Presyncope), transient loss of consciousness (syncope), easy fatigability, shortness of breath, squeezing in the chest, ect. are common symptoms experienced by a patient.
- Degeneration in the electric system of the heart due to ageing
- Kidney failure
- Increase or decrease in the potassium level
- Adverse effects of some medicines
- Congenital / by birth in some cases
- Heart attack – lack of blood supply to heart
- Weak heart
- To eliminate the root cause, i.e., correct potassium level, treat hypothyroidism, stop drugs like Beta-Blockers, etc.
- In many such cases it is necessary to insert a temporary pacemaker. A wire is taken through a vein in the neck or leg up to the heart and is placed inside the right ventricle under local anaesthesia. Its external end is connected with a pulse generator battery which paces the heart at a rate of 60-80 per minute. If the patient does not regain normal sinus rhythm within 3-7 days, a permanent pacemaker implantation is required.