What Happens When the Electrical Activity of Your Heart Changes?

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.



What Happens When the Electrical Activity of Your Heart Changes?

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.

Causes

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.

Symptoms

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

Treatments

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.

High Blood Pressure and Kidney Disease - Causes and Symptoms!

High blood pressure and sex

High blood pressure is a condition in which the pressure of the blood against the artery wall is high enough to cause health problems, including heart disease. No symptoms may be noticed in a person for years but the damage to the blood vessels and to your heart continues. High blood pressure can have an impact on your sex life. Although sexual activity does not lead to any possible threats to your health but high blood pressure can affect the pleasure you would have otherwise derived from sex.

In Men

High blood pressure leads to the wearing out of the lining of blood vessels and causes arteries to narrow and harden that decreases the blood flow. This results in decreased blood flow to the penis. In case of some men, this decreased blood flow makes it difficult for them to achieve and maintain an erection. This problem is called erectile dysfunction.

High blood pressure may also interfere with ejaculation and be a cause for low libido. The medications that are prescribed for treating high blood pressure may lead to this condition.

In Women

Just as in the case of men, high blood pressure results in the decreased flow of blood to the vagina in case of women. This may cause problems like low libido, vaginal dryness, or complexities in achieving orgasm. Sexual dysfunction in women results in stress, anxiety and even relationship issues.



High Blood Pressure and Sex

With recent lifestyle changes, more and more people, younger in age, are falling prey to heart attacks. While some silently suffer the attack during their sleep and never wake up, others have symptoms which they dismiss as acidity or muscular pain and ignore them. There are multiple media programs that are trying to create awareness about how to identify a heart attack. If done at the right time, there is a good chance that the person can be saved.

What is a Heart Attack?

The blood vessels gradually narrow, reducing the blood flow to the target organs. This reduces the efficiency of the target organ, and if this happens to be the heart, it is known as a heart attack. The area that should ideally receive blood does not, leading to its  death.  If the damage is not severe, it can be reversed. However, if this attack happens in one of the critical areas of the heart, it can even be fatal.

Symptoms To Watch For: Very few attacks happen suddenly. Most start slowly and progress, and if identified on time, a life can be saved. The episode takes about an hour, and if you are well-versed with the symptoms, it could help identify the condition correctly and save a life. Most people use antacids and muscle relaxants to ease the situation, which does provide immediate relief, but not a proper cure.

There is a central pain which is constant, nagging, and has a squeezing like sensation. This causes discomfort and most often, this pain is in the center of the chest area, which lasts for just a few minutes. Sometimes the pain can go and come back. This pain radiates down into the arm, up into the neck area, and also into the jaw and is almost always indicative of a heart attack.

With chest pain, there is always shortness of breath which the person will experience. This is due to reduced oxygen levels in the body.

Associated symptoms include fatigue, exhaustion, nausea, dizziness, light-headedness.

There is almost always profused sweating where the person breaks into a cold sweat.

If the attack happens during sleep, the person may be snoring and may feel, as if something is choking his airway.

Due to reduced return of blood from the peripheral organs, there could be swelling of the feet and ankles.

If there is irregular heart beat (palpitations) very often, talk to your doctor about it.

When you suspect a person of having a heart attack, check for these signs. Very often, a heart attack is detectable and can be managed with timely intervention.

Signs Of A Heart Attack

Angioplasty is the procedure of opening a coronary artery blockage with the help of wire balloon and stent. This procedure is done to open the blocked coronary arteries if they are causing symptoms or acute heart attacks.

HOW IT IS DONE?

The procedure is usually done in local anaesthesia. A wrist artery (radial) or a groin artery (femoral) is used to gain access to the coronary artery as is done in angiography. A hollow tube called a catheter is passed upto heart artery and through this, a guidewire is passed across the blockage and over this wire balloon is passed and blockage dilated.

After this balloon is removed and the metallic stent is passed over this wire. The stent is then inflated and it takes its shape of the hollow tube so that the flow in the coronary artery is restored.

WHAT ARE INDICATIONS OF ANGIOPLASTY AND STENTING:

An acute Heart attack is the most definite indication of angioplasty and stenting. At the time of the heart attack, there is an urgent need to restore the blood flow of block coronary artery which is usually not possible with medicines alone. Angioplasty is the most effective and definite way of opening the artery urgently in such situation.

SHOULD ALL BLOCKAGES BE OPENED UP BY ANGIOPLASTY AND STENTING?

NO, all blockages do not warrant this procedure. There is some amount of risk involved in the angioplasty procedure itself. When the risk of blockage is considered more than the risk of opening the artery then the procedure is indicated. Patients who are doing good on medicines may be followed up without angioplasty.

All About Angioplasty!

9 health benefits of walnuts:

1. Lowers risk of diabetes
2. Promotes a healthy heart and circulatory system
3. Lowers cholesterol levels
4. Boosts brain power and improves memory
5. Slows the progression of rheumatoid and osteoarthritis
6. Acts as an anti-inflammatory food
7. Rich in antioxidant properties
8. Fights breast and prostate cancer
9. Improves reproductive health in men.

9 Ultimate Reasons to Eat Walnuts Everyday

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