The electrical system within the heart is responsible for ensuring that
the heart beats correctly so that blood can be transported throughout
our the body. Any malfunction of the electrical system in the heart
malfunction can cause a fast, slow, or irregular heartbeat.
Types of heart disease
that affect the electrical system are known as arrhythmias. They can
cause the heart to beat too fast, too slow, or irregularly. These types
of heart disease include:
1. Sinus tachycardia Sinus
tachycardia occurs when the sinus rhythm is faster than 100 beats per
minute therefore it increases myocardial oxygen demand and reduces
coronary blood flow, thus precipitating an ischemia heart or valvular
disease.
2. Sinus bradycardia
Sinus bradycardia occurs when a
decrease of cardiac output results in regular but unusually slow heart
beat less than 60 beats per minute. Symptoms of sinus bradycardia
includes a feeling of weightlessness of the head, dizziness, low blood
pressure, vertigo, and syncope.
3. Atrial fibrillation
Atrial
fibrillation is an irregular heart rhythm that starts in the upper
parts (atria) of the heart causing irregular beating between the
atria and the lower parts (ventricles) of the heart. The lower parts
may beat fast and without a regular rhythm. Symptoms of atrial
fibrillation include dizziness, light-headedness, shortness of breath,
chest pain and irregular heart beat.
4. Atrial flutter
Atrial flutter is an abnormal heart rhythm that occurs in the atria
of the heart causing abnormalities and diseases of the heart. Symptoms
of atrial flutter includes shortness of breath, chest pains, anxiety and
palpitation.
5. Supraventricular tachycardia
Supraventricular
tachycardia is described as rapid heart rate originating above the
ventricles, or lower chambers of the heart causing a rapid pulse of
140-250 beats per minute. Symptoms of supraventricular tachycardia
include palpitations, light-headedness, and chest pains.
6. Paroxysmal supraventricular tachycardia
Paroxysmal
supraventricular tachycardia is described as an occasional rapid heart
rate. Symptoms can come on suddenly and may go away without treatment.
They can last a few minutes or 1-2 days.
7. Ventricular tachycardia
Ventricular
tachycardia is described as a fast heart rhythm that originates in one
of the ventricles of the heart . This is a potentially life-threatening
arrhythmia because it may lead to ventricular fibrillation and/or sudden
death. Symptoms of ventricular tachycardia include light headedness,
dizziness, fainting, shortness of breath and chest pains.
8.Ventricular fibrillation
Ventricular fibrillation is a condition in which the heart's electrical activity becomes disordered causing the heart's lower chambers to contract in a rapid, unsynchronized way resulting in little heart pumps or no blood at all, resulting in death if left untreated after in 5 minutes.
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