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The heart's electrical conduction system plays a very important role in cardiovascular functioning. Also known as the atrioventricular (AV) conduction system, it regulates and controls the timing of the heartbeat.
How does the heart's electrical conduction system work?
There is a collection of electrical cells in the upper right atrium of the heart known as the sinoatrial (SA) node which acts as a natural pacemaker and generates electrical signals. These signals travel through specialized electrical pathways and stimulate the muscular walls of the heart to contract in a rhythmic manner. This gives rise to the heartbeat that pulses at a specific frequency every minute.
What is the effect of fluctuations in electrical activity on the heart?
The standard heart rate in human being ranges from 60 to 100 beats per minute. It slows down when a person sleeps and speeds up when one experiences physical or emotional heightening. These fluctuations are triggered by the brain or other systems of the body and signal the SA node to generate charges more rapidly or slowly. This leads to spikes and drops in the heart rate, depending on the nature of the situation.
What happens when there is dysfunction in the heart's electrical activity?
When the heart's electrical conduction system does not function properly, it leads to the occurrence of a condition known as arrhythmia or abnormal heart rhythm. This happens when electrical impulses are generated in an irregular manner and causes tachycardia (rapid heartbeats) or bradycardia (slow heartbeats) which takes place in jarring infrequent tempos.
What causes fluctuations in the heart's electrical activity?
There are various kinds of triggers that cause the heart rate to fluctuate. The exact nature of fluctuation also depends on the type of trigger. A few everyday examples of these causes are as follows:
- Exercise and strenuous physical activity increases electrical activity as the heart is required to beat faster so as to increase the supply of blood and oxygen to the muscles.
- Sleep and rest reduce heart rate as the body is not needed to exert itself.
- Release of adrenaline into the bloodstream causes the heart rate to spike up. If you wish to discuss about any specific problem, you can consult a cardiologist.
Sir my cholesterol is 179 and Ldl is 130 Hdl is 52 vldl is 15 triglycerides is 79 can I eat cow ,s ghee I am go for running 2.4 km and doing gym also .My weight is 54 kg height is 169 cm age 25.
I m 42 years old and have the problem of cholesterol more 190 (bad. Pl suggest me how it can be controlled.
Sir my papa is heart patient please suggest me the diet for my papa. As he has also given one stunt. So please tell me the right answer. I am waiting sir.
I am a diabetic and suffering with high cholesterol and some kidney problem so, can you kindly guide me.
My mother is affect attack. She doing anjio test 3 blocks is there. angiogram or bypass surgery which is the best way. Pl suggest.
I am sher singh my mother suffering from blood pressure low. How I can help her. She is 52 years old.
My father's behaviour has been changed a lot. I just missed jee advanced by 1000 ranks. I have recovered but my father was badly hurt. He has BP problem. Now he just make any issue and quarrels upon it for hours. After 2 or 3hours he becomes normal as nothing has happened. What is it? Please help me.
When I do exercise I feel breathlessness ecg and chest xray are ok. What are the reason and what is the treatment for breathing problems.
Im 21 year old female, I have backache, breathing problem, and chest pain. Sometimes, even sometimes stomach pain also. Im feeling to ask you that, is I have any heart problem.
I am suffering from heart pain. What are the symptoms for heart attack. How can I prevent from that. Can you help me please. Sometimes I lose control of myself.
My mother is 76 years old, non diabetic but hypertension and acidity since past 10 years. Taking Nitrolex SR - 1 per day and RAZO D 1#. She is having osteo arthritis and constipation for which she takes Anuloma powder. What to do for pain and diet?
I am raking Telma 40 mg tablet regularly as my blood pressure become 130 to 150. Can I take Ozotel 40 mg or E tel 40 mg in place of Telma 40 mg as it is costly. Would you suggest if another, please.
Heart failure occurs when the heart fails to pump blood around the body and organs for oxygen and nutrients. As blood moves through the heart and body at a slower rate, pressure in the heart increases. The chambers of the heart stretch to hold more blood to be able to pump through the body. This helps the blood to move but eventually the heart muscle walls weaken, unable to pump blood efficiently. The kidneys, in response cause the body, to retain fluids. The leakage of fluid in the tissues and the organs congests the heart, leading to heart failure.
Any of the following conditions can be responsible for weakening the heart and causing heart failure.
1. Coronary artery disease: this is a disease of the arteries supplying blood and oxygen to the heart that causes decreased blood flow to heart muscle. If the arteries get blocked or narrowed (due to the buildup of fatty deposits), the heart fails to get oxygen and nutrients, which may eventually lead to heart failure.
3. High blood pressure: high blood pressure puts an extra strain on the heart for it to work harder to circulate blood throughout the body. As a result, the heart muscle may become stiff or weak to effectively pump blood.
Sometimes I get some acids coming out from my mouth and it burns me a a lot and also having pain on the left side of chest. What should I do?
Causes and Symptoms of Renal Hypertension
High blood pressure is characterized by an increased force that the blood exerts on the blood vessels when it moves through the body. Renal hypertension is a blood pressure disorder where the arteries that carry blood to the kidneys become narrow, as a result of which the blood pressure through these vessels increases.
It is caused when the arteries that supply blood to the kidney get narrow or get blocked. This can cause the kidney to release specific hormones that signal the body to retain water and sodium. This can put additional pressure on the blood vessels which leads to increased blood pressure. It can also be caused by atherosclerosis which is characterized by hardening of the arteries. Improper development of the arteries can also lead to renal hypertension.
The symptoms of renal hypertension are:
- Feeling confused
- Blurred vision
- Regular headaches
- Bleeding from the nose
- Gradual decline in kidney function
- Possible long-term damage to the kidney
- Feeling lethargic and drowsy
- Loss of appetite
- Dryness in skin
- Muscle cramps
- Breathing difficulties
The diagnostic procedure for this disorder consists of blood, urine, doppler ultrasound and CT angiography or MR angiography tests. Treatments for this disorder usually include medications to ease blood pressure. Preventive measures include modifications in lifestyle such as following a proper diet, limiting smoking, restricting sodium or salt in the diet and following an exercise regimen. Steps should also be taken to reduce stress. Yoga and meditation are highly beneficial to control the condition. Sometimes intervention is needed in the form of PTRA and stenting.
Related Tip: Kidney Stones and Homeopathy