From the Research
Yes, a dying pacemaker battery that shifts to backup or end-of-life mode can cause lightheadedness. When a pacemaker battery begins to deplete, the device typically switches to a fixed-rate pacing mode (often called elective replacement indicator or ERI mode) which may not respond appropriately to your body's changing needs. This can result in inadequate cardiac output during physical activity or stress, leading to symptoms like lightheadedness, dizziness, fatigue, or even fainting. Other symptoms might include shortness of breath, chest discomfort, or a return of the original heart rhythm problems. Most modern pacemakers are designed to give several months of warning between initial battery depletion signs and complete failure, but it's crucial to contact your cardiologist immediately if you experience these symptoms. Regular pacemaker checks (typically every 3-12 months depending on your device and condition) can help identify battery depletion before symptoms occur. The battery typically lasts 5-15 years depending on the model and how frequently it needs to pace your heart, as seen in a case reported in 1. Some pacemaker malfunctions, such as those caused by lead fractures or displacement, can also lead to symptoms like lightheadedness, as reported in 1 and 2. Pacemaker syndrome, which can occur when a ventricular pacemaker is implanted, can also cause vertigo, lightheadedness, syncope, and hypotension, as described in 3. However, the most recent and relevant study to this question is 1, which highlights the importance of regular pacemaker checks and prompt medical attention if symptoms occur. Key points to consider include:
- Regular pacemaker checks to identify battery depletion before symptoms occur
- Contacting your cardiologist immediately if you experience symptoms like lightheadedness or dizziness
- The potential for pacemaker malfunctions or pacemaker syndrome to cause similar symptoms
- The importance of prompt medical attention to prevent serious complications, as seen in 1.