Cardiac depression is a condition in which the heart's ability to contract and pump blood is reduced. This can be caused by a variety of factors, including inadequate oxygen supply, abnormal heart rhythms, and certain medications.
When the heart's pumping function is reduced, it can lead to an array of symptoms, including shortness of breath, fatigue, chest pain, and dizziness. Cardiac depression can also cause a decrease in blood pressure, which can lead to lightheadedness and fainting.
The most common cause of cardiac depression is myocardial ischemia, which is a decrease in the oxygen supply to the heart. This can be caused by coronary artery disease, which is a buildup of plaque in the arteries that supply blood to the heart. Other causes of myocardial ischemia include heart valve disease, a heart attack, or an infection in the heart muscle.
Another cause of cardiac depression is an abnormal heart rhythm, such as atrial fibrillation. This is an irregular heartbeat that can cause the heart to beat too quickly or too slow. This can lead to a decrease in blood flow to the heart, which can cause the heart to become weak and unable to pump effectively.
In addition to myocardial ischemia and abnormal heart rhythms, certain medications can also cause cardiac depression. These medications include beta-blockers, which are used to treat high blood pressure and chest pain, and calcium channel blockers, which are used to treat irregular heart rhythms.
Cardiac depression is a serious condition that can have serious consequences, including heart failure. If you are experiencing symptoms of cardiac depression, it is important to seek medical attention immediately. Your doctor will be able to determine the cause of your symptoms and recommend the appropriate treatment.