
A heart attack occurs when blood flow to a section of heart muscle becomes blocked, preventing it from receiving the oxygen it needs. If not treated relatively quickly, the muscle will become damaged and possibly die, making heart attacks one of the major causes of death in the U.S. If you think you or someone with you is experiencing a heart attack, you should seek medical attention immediately by dialing 911. If the blood flow can be restored in time, damage to the heart can be limited or prevented.
Did you know heart attacks have beginnings? These "beginnings" occur in over 50% of patients. Most importantly, if recognized in time, these "beginnings" can be treated before the heart is damaged!
Click here to learn more about "beginnings" of heart attacks.
If you have had a heart attack, the following tests and procedures may be performed:
Electrocardiogram (ECG)
This test to show the electrical conduction of the heart will be one of
the first used to diagnose a heart attack. During a heart attack, the
heart muscle is injured and it won't conduct electricity normally. This
will be shown on the ECG. Initial blood tests may be done to determine
if there has been damage to your heart. If damage to the heart muscle
has occurred, enzymes slowly leak into your blood flow. These enzymes
are measured in blood tests called troponin and CK total.
Cardiac Nuclear Scan
This test helps identify blood-flow problems with the heart. By injecting
radioactive material through an IV site, physicians will be able to identify
areas of the heart that are not allowing blood to flow properly.
Echocardiogram
This test can help identify whether an area of your heart has been damaged
by a heart attack. Using sound wave technology, it can provide images
of your heart and can detect poor heart wall motion, an indicator of heart damage.
Cardiac Catheterization
This test can help determine whether your coronary arteries are narrowed
or blocked. This is done by placing a small catheter into an artery, usually
in the groin or wrist, which is fed to the arteries of the heart. A liquid
dye is then injected to visualize the coronary arteries, thereby revealing
areas of blockages (also known as angiography). Additionally, if a blockage
is discovered, the area can be treated while the catheter is in place
in a procedure called angioplasty.
Percutaneous Coronary Intervention (PCI)
Similar to the cardiac catheterization, this test can actually treat blockage
by using balloon angioplasty and/or by placing a stent. Balloon angioplasty
is a catheter with a balloon tip that is fed through the arteries to the
blockage. The balloon is opened and pushes plaque back against the arterial
wall, which allows for improved blood flow. Coronary stenting often accompanies
angioplasty. Stents are small wire mesh devices used as scaffolding to
support and open the arterial wall, thereby reducing the chance the artery
will re-close. PCI usually takes 1-2 hours to complete the entire procedure
and is performed with local anesthesia and procedural sedation and analgesia.
Blood thinners may be used through an IV to prevent clotting. An anti-platelet
medication along with aspirin is usually prescribed for a minimum of three
months up to 12 months (depending on physician practice) to prevent blood
clot formation within the affected vessel.
Coronary Artery Bypass Surgery
Of those people who have heart disease, approximately 10 percent will undergo
coronary artery bypass graft surgery (CABG). Those with severe narrowing
or blockages, especially involving multiple arteries, may be considered
for bypass surgery. This is an operation performed by a surgeon and done
under general anesthesia. The surgeon takes a healthy vessel from the
leg, chest or arm and creates a bypass around the blockage, restoring
blood flow to the heart muscle. Typically, one to five bypasses can be
done, depending upon how many coronary arteries are blocked. A CABG procedure
usually requires about a five-day stay in the hospital and up to three
months to fully recover from the surgery.
Heart Attack - Seconds Count
Heart Attack Risk Factors
In this Medical Minute, Dr. Dale Touchstone, Cardiologist, explains how changing some of your habits could greatly improve your heart health.