What is pacemaker. What is use?

 A cardiac pacemaker is a small medical device implanted in the chest to help control abnormal heart rhythms.

pacemaker in heart 

What is a cardiac pacemaker?

                 A cardiac pacemaker is a battery-powered device that sends electrical impulses to the heart muscles to maintain a proper heart rate and rhythm. It’s usually implanted under the skin near the chest and connected to the heart with one or more leads (wires).

Why is it used?

Pacemakers are used when the heart's natural electrical system doesn't function properly, which can cause:

Bradycardia (abnormally slow heart rate)

Heart block (electrical signals are delayed or blocked)

Some cases of heart failure

Certain types of fainting spells (syncope) caused by abnormal rhythms

How to do MRI after pacemaker?

Doing an MRI on a patient with a pacemaker requires special precautions, but it's possible if the pacemaker is MRI-compatible (also called MRI-conditional).

Steps to perform MRI safely after pacemaker placement:

After pacemaker mri

1. Check device compatibility:

Confirm that both the pacemaker and leads are MRI-conditional.

Look up the model and check manufacturer guidelines.

2. Pre-MRI assessment:

Involve a cardiologist or electrophysiologist.

Interrogate (check) the device with a programmer before the scan.

3. Reprogramming before MRI:

The pacemaker may be switched to MRI-safe mode (to avoid interference or malfunction).

4. MRI procedure:

Use 1.5T MRI scanner (standard for MRI-compatible devices).

Monitor the patient’s heart rate and rhythm continuously.

Limit scan time if required.

5. Post-MRI care:

Re-interrogate and restore normal pacemaker settings.

Monitor the patient for any delayed effects.