Almost all heart attacks occur when a blood clot suddenly and completely
blocks a coronary artery. This condition is called a coronary
thrombosis, or simply a coronary. The part of the heart muscle nourished
by the blocked artery becomes damaged by lack of oxygen. Unless blood
flow returns within minutes, muscle damage increases. Heart cells begin
to die after four to six hours without blood. The damage can affect the
heart's ability to pump and may cause the patient's death. If the clot
can be dissolved within four to six hours, damage to the heart can be
reduced.

Recovery. Many doctors perform stress tests on patients
who have had a heart attack to determine their risk of having another
attack or dying suddenly. Patients with abnormal stress tests may be
advised to consider angioplasty or bypass surgery. People without
complications are sent home for recovery and rehabilitation.
Rehabilitation seeks to restore good health through a program that
includes gradual increase in exercise and proper diet. The program may
also include drugs to control such conditions as high blood pressure and
high cholesterol. Most patients can do light work in 30 days. Complete
recovery from an attack that leaves thick scars on the heart may take up
to three months.
If you've had a heart attack, you will probably go home from hospital
with lots of new medicines. This can be confusing. If you're not sure
what they all are, ask your doctor. The medicines you are most likely to
take are listed below.You will probably need to take them for many
months, and maybe years.
makes your blood less
sticky, so you are less likely to get a blood clot that could cause a
heart attack. Research shows taking one low-dose aspirin every day cuts
your risk of having another heart attack by about a third. If you're
allergic to aspirin or can't take it for some other reason, your doctor
may give you another drug to stop your blood clotting, for example
clopidogrel (Plavix) or dipyridamole (Persantin).
slow your heart
down and make it beat less strongly. Because it's working less hard, it
needs less oxygen. This reduces your risk of having another heart
attack. There are lots of different types. Some common ones are atenolol
(Tenormin), carvedilol (Eucardic) and metoprolol (Lopresor).
reduce the amount of
cholesterol in your blood. They reduce the risk of heart attacks for
most people. People who are at highest risk of having another heart
attack seem to benefit the most. Some names of statins are atorvastatin
(Lipitor), pravastatin (Lipostat) and simvastatin (Zocor).
keep your blood
vessels from getting narrower. They are especially useful if your heart
is not pumping as well as it used to. They should reduce your risk of
another heart attack. But they're not used for everyone. Some names of
ACE inhibitors are captopril (Capoten) and enalapril (Innovace).
All these drugs can cause side effects. As you read this,
remember you won't get all of them. If you are troubled by side effects,
talk to your doctor.You may be able to switch to another medicine, or a
lower dose.
Aspirin can cause stomach upsets. Also, because it makes your
blood less sticky, you may find cuts bleed for longer. There is a small
chance you could get bleeding from the stomach. But this is not very
likely, because the dose of aspirin is low.
Beta-blockers lower your blood pressure. This can make you feel
tired, and you might feel dizzy if you stand up quickly. Some men find
beta-blockers make it difficult for them to get an erection. And
beta-blockers can make some lung problems worse. If you have asthma or
chronic bronchitis, make sure your doctor knows before you take
beta-blockers.
Most people don't get side effects from statins. But they can
cause muscle pain or damage.Tell your doctor if you get muscle pain when
taking statins. Some people taking statins have had liver and kidney
damage, but doctors are not sure that the statins caused the problems.
Many people find ACE inhibitors can cause a dry cough.They may also cause low blood pressure and kidney problems.
Some people who have a heart attack have an operation called an
angioplasty, to widen the artery that got blocked. It can be done as an
emergency operation, instead of dissolving the blood clot with drugs.
If you didn't have an angioplasty, but tests show that your
heart arteries are narrow, you might have an angioplasty at a later
stage. This can reduce your chances of having chest pain (angina) and of
having another heart attack. Or you might have an angioplasty if you
start getting chest pain after you've gone home from hospital.
To carry out an angioplasty, a surgeon feeds a thin deflated
balloon into your heart artery, through a tube into a blood vessel in
your groin. When the balloon is in the right place, the surgeon inflates
it, so it widens the artery. Then it's taken out again. Sometimes a
small metal tube (called a stent) will be inserted, to keep the artery
open.