Can Coronary Heart Disease Cause Dizziness?

Dizziness is not a classic symptom of coronary heart disease (CHD), but some patients with this condition may experience it. There are several underlying reasons that explain how CHD might lead to feelings of dizziness and lightheadedness.

Reduced Blood Flow to the Heart

One of the primary causes is the narrowing or blockage of the coronary arteries, which are responsible for supplying blood to the heart muscle. When these arteries become obstructed, it can lead to myocardial ischemia, oxygen deprivation, or even tissue damage. As a result, the heart's ability to pump blood efficiently throughout the body diminishes, reducing the supply of oxygen-rich blood to the brain. This can cause symptoms such as dizziness, ringing in the ears, and nausea.

Low Heart Rate and Blood Pressure

Another factor that may contribute to dizziness in individuals with coronary heart disease is bradycardia (slow heart rate) or hypotension (low blood pressure). These conditions can impair blood circulation to the brain, causing feelings of unsteadiness or faintness. Patients who are on certain medications to manage their heart condition may also experience these side effects, further contributing to dizziness.

Neurological Changes

Some patients with coronary heart disease may also experience neurological symptoms, including dizziness and general discomfort. These symptoms can arise due to complex interactions between the cardiovascular and nervous systems, particularly in cases where chronic heart issues impact brain function or where psychological stress plays a role.

If you or someone you know experiences unexplained dizziness alongside other symptoms of heart disease, it's important to seek medical attention promptly. Early diagnosis and appropriate management can significantly improve outcomes and reduce the risk of complications.