Understanding Your Cardiac Device
If your healthcare team has discussed a heart device with you, the options may seem overwhelming at first. These devices are designed to support your heart in different ways, helping it maintain a healthy rhythm, respond to abnormal heart activity, or provide valuable diagnostic information. Understanding the different types of cardiac devices can help you feel more confident about your treatment plan.
Pacemakers
A pacemaker helps regulate a heartbeat that is too slow. When the heart rate drops below a healthy level, the device delivers gentle electrical impulses to keep the heart beating at an appropriate pace.
Pacemakers are small, battery-powered devices designed to provide reliable support and help maintain a consistent heart rhythm.
There are two main types of pacemakers:
- Transvenous Pacemakers – Implanted in the chest and connected to the heart through thin wires known as leads.
- Leadless Pacemakers – Placed directly inside the heart, eliminating the need for leads.
Implantable Cardioverter-Defibrillators (ICDs)
An implantable cardioverter-defibrillator (ICD) provides many of the same functions as a pacemaker while also protecting against dangerous fast heart rhythms.
If the device detects a life-threatening rhythm disturbance, it can deliver therapy to restore a normal heartbeat. Depending on the situation, the ICD may provide rapid pacing therapy or a shock to correct the abnormal rhythm and help protect against sudden cardiac arrest.
Several types of ICDs are available, each differing in where and how the device is implanted:
- Transvenous ICDs – Use leads placed inside the heart.
- Subcutaneous ICDs (S-ICDs) – Placed under the skin of the chest without leads inside the heart.
- Extravascular ICDs (EV-ICDs) – Positioned beneath the breastbone and outside the heart.
Loop Recorders and Implantable Cardiac Monitors
Loop recorders, also known as implantable cardiac monitors, are diagnostic devices used to continuously monitor heart activity. Unlike pacemakers and ICDs, these devices do not deliver pacing or shock therapy.
Instead, they record heart rhythm information around the clock, helping healthcare providers investigate symptoms or detect abnormal heart rhythms that may occur intermittently.
The device is placed just beneath the skin and continuously captures data about the heart's electrical activity. If symptoms such as dizziness, fainting, or palpitations occur, the recorded information can help your healthcare team determine exactly what was happening with your heart at that time.
Choosing the Right Device
Whether the goal is pacing, protecting, or monitoring your heart, cardiac devices play an important role in helping people live with greater confidence and peace of mind.
The right device depends on your specific heart condition, symptoms, and treatment goals. Talk with your healthcare provider to learn which option may be best suited to your individual needs.