Your heart is made up of different chambers. The heart is made up of muscle tissue. When the chambers expand, they pull in blood and when they contract they push blood out. This is what causes the blood to circulate through the body, get oxygenated, etc. The pumping sound is the heartbeat. What causes the heart muscles to expand and contract? Very tiny electrical signals are sent from the brain and delivered to the heart via the nerves. Various medical conditions cause the nerves to deliver these electrical signals at wrong times. This causes the heart to stutter; it attempts to push blood out before it has fully pulled it in from the other side. No proper circulation to organs and the brains causes blackouts and eventual death. For such cases, doctors implant a small device called a pacemaker into the nervous system which deliver the properly timed electrical signals to the heart and makes it beat in a regular manner.
Pacemakers and defibrillators provide electrical impulses to the heart, which can return the heart beat to a normal rhythm.
A person can only have one pacemaker. A pacemaker helps if you have problems with the beating of your heart. If you have two pacemakers the beating of your heart won't be normal.
Yes, the isotope plutonium 238 was used in the past as power source for pacemakers.
Yes, those in pacemakers for the heart.
Pacemakers can be internal (placed under the skin) or external, with the electrodes placed on the skin or threaded through a tube placed into the heart.
Pacemakers regulate the heart beat. They are very safe.
A pacemaker is nothing but a specialized mass of muscle tissue present in the wall of the heart. It initiates the heart beat.
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depolarizes to its threshold potential before other pacemakers in the heart
Some second- and almost all third-degree heart blocks require an artificial pacemaker.
Electroacupuncture should not be used on people who have seizures, epilepsy, histories of heart disease or strokes, or those with heart pacemakers.
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