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?

In addition to pumping blood to various organs, the heart also has its own blood supply, through which it receives its oxygen and nutrient supply. In patients with coronary artery disease and atherosclerosis, there is a narrowing of the blood vessels which reduces the amount of blood flow to the target organs, including the heart. 

When this happens in the heart, there is chest pain due to overexertion of the heart muscles. There could be two patterns to this chest pain. With regular exertion like exercise, there would be chest pain, and most patients are familiar with this pattern.

This is known as angina pectoris or stable angina. In some people or in some instances, chest pain occurs which is sudden and not of a predictable pattern. It could be related to extreme exertion or stress. This is known as unstable angina and can lead to heart attack and be life-threatening.

Stable angina or angina pectoris has a stable, predictable pattern which most patients get familiar with over a period of time and learn to manage. Read on to know more about the signs and symptoms and management techniques.

Signs and symptoms: Stable angina usually occurs after a round of physical exertion. The patient feels a feeling of tightness in the chest which feels like the chest being squeezed. The pain can gradually spread to the shoulder, arms and even the neck. The pain can also be induced by eating, exposure to cold, emotional stress. It lasts for about 15 minutes and is relieved by rest and sublingual nitroglycerin. The pain intensity does not change with position or coughing. In addition, the patient may also experience shortness of breath, fatigue, profuse sweating, nausea, and dizziness.
The patient may be able to detect signs on further testing including ECG, echocardiography and stress testing. Features like cardiomegaly, altered ejection fraction would be detected based on the severity of the disease.

Treatment: Immediate treatment to relieve the pain includes resting and sublingual nitroglycerin. On an ongoing basis, the treatment would include 3 approaches   lifestyle changes, medications, and surgery.

Lifestyle changes: Regular exercise, smoking cessation, reduced fat intake, reduced alcohol consumption, weight loss, and stress management are some lifestyle changes to be made to improve symptoms.
Medications: A number of medications would be used depending on patient s symptoms. Aspirin to prevent clotting, medications to control blood pressure and cholesterol and diabetes.
Surgery: In patients with advanced coronary artery disease, revascularization methods may be required, which includes angioplasty and coronary bypass.
In a person with known risk factors, it is advisable to have regular checkups so that the disease progression can be controlled and symptoms managed with minimal intervention.

Predictable Chest Pain Pattern - What Does It Indicate?

Stroke is a medical condition in which the flow of blood towards the brain is poor and causes the death of certain cells. There are two common types of stroke: 

1. Ischemic- due to lack of blood flow
2. Hemorrhagic- due to bleeding

Signs and symptoms of stroke 

Problems with movement
Inability to feel  on one side of the body
Problems understanding or in speech
Vertigo
Loss of vision
Difficulty in carrying out everyday activities
Role of Physiotherapy for Patients with Stroke

The main focus of physiotherapy is to help you use your arms and legs to regain as much strength and movement as possible. 
If you have one-sided paralysis, correct positioning is important to prevent spasm or injury.
It helps you to sit up as this will help you avoid blood clots in your legs, improve your breathing and help you recover quickly.
If you are unable to move, you may be given chest physiotherapy to keep your lungs free of infection.
What does a Physiotherapist do?

A physiotherapist advises you on how you should be positioned when lying or sitting, and how often you need to be moved.
Motivates you to be actively involved in your physiotherapy sessions to help you relearn normal patterns of movement
Decides when you should begin to start walking and what equipment is needed to move or support you
Provides therapy to strengthen your limbs and teach you how to move again as independently as possible
Takes care of the fact that no complications should arise and you have a smooth recovery.
Treatment Techniques:

Strength Training: It is evident that strength training can improve upper-limb strength and function without increasing tone or pain in individuals with stroke.
Gaming: Goal orientated computer gaming has proven to significantly reduce upper limb impairment in stroke survivors.
Virtual Reality: Virtual reality training has been shown to be effective in restoring upper limb motor impairments and motor-related functional abilities.
Mirror Therapy: Mirror therapy has been shown to have a beneficial effect on motor control and function compared to conventional therapy.
Robot-Assisted Therapy: It has been shown to have a beneficial effect on motor recovery and function.
In the upper extremity with severe impairment and/or poor prognosis for recovery, Chedoke McMaster Stroke Assessment (CMSA) of Arm and Hand < Stage 4) treatment should focus on maintaining a comfortable, pain-free, mobile arm and hand. Engage in repetitive and intense use of novel tasks that challenge the stroke survivor to acquire necessary motor skills to use the involved upper limb during functional tasks and activities. Engage in motor-learning training including the use of imagery.

Stroke - How Physiotherapy Can Help With It?

Why Do You Get Palpitations? How to Get Immediate Relief?

Palpitations is the feeling that you experience when your heart beats abnormally. Heart palpitations can be felt in the form of rapid, fluttering or pounding heartbeats. They can be frightening as when you palpate, you heart beats so hard that it even skips a beat and the sensations are so strong that they can be felt all through your chest, neck, and throat.

Palpitations are also common especially in young people because of abnormal electrical circuits in heart from birth. However, they may have normal hearts on Echo. Such palpitations are curable by a nonsurgical methods called Radiofrequency Ablation.

Palpitations can be triggered as a result of a number of reasons like stress, certain medications, exercise etc.

Here are a few prominent causes of heart palpitations.

Causes unrelated to the Heart -

- Anxiety, fear, and stress
- Consumption of alcohol and drugs like caffeine, nicotine etc.
- Consumption of street drugs likes cocaine, amphetamines etc.
- Certain medical conditions such as thyroid, anemia, dehydration, low blood pressure and low sugar levels etc.
- Hormonal changes that occur as a result of menstruation, pregnancy, menopause etc.
- Certain nutritional and herbal supplements
- Certain medications like asthma inhalers, diet pills etc.
- Abnormal levels of electrolyte
- Sensitivity to certain food items like some carbohydrates

Causes related to the Heart -

- Coronary artery disease
- Prior instances of heart attack
- Congestive heart failure (a condition wherein your heart's chambers get affected)
- Problems associated with the heart valves or the heart muscles

Immediate Relief Mechanisms-

It is crucial to go to the most easily available doctor to get an ECG done during palpitations as ECG will give an exact diagnosis, which helps in identifying the clear line of treatment.

Here are a few techniques that can help you in getting immediate relief from heart palpitations until you are able to visit a doctor in case of a serious condition.

- Cough it out
- Splash cold water on your face or take a cold shower
- Practice slow, deep breathing exercises



Why Do You Get Palpitations? How to Get Immediate Relief?

The heart may sometimes face excessive fluttering or a throbbing sensation, which may make you feel uncomfortable. Such sudden throbbing sensations resulting in discomfort are called 'palpitations'. Homeopathy has some great remedies depending on the cause of these problems.

Let s have a look at these:

Palpitations caused by anxiety: This is one of the top causes for palpitations which occur before sitting for an exam, interview or before important events of your life. However, they may tend to stay longer and it is advisable that you control them with the use of Aconite or Arsenic Album.
Palpitations caused by Physical exertion: If you have a weakened heart or if you smoke and thus tend to feel a lot of exertion even with the slightest of physical efforts, then Spigelia, Iberis and Digitalis are good medications. Digitalis is especially good for palpitations caused by the slightest of movements, while spigelia is very good with palpitations that cause arm pain as well.
Anemia: Anemia or the lack of red blood cells can be very dangerous for your health as it can damage your vital organs. It can also cause palpitations along with other symptoms such as paleness, lack of strength and drowsiness. Natrum Mur and Ferrum Met are two of the most effective remedies in such cases.
Use of tobacco products: Another reason for palpitations developing is the use of tobacco products, such as cigarettes or chewing tobacco. In such cases, palpitations may occur even with the slightest of exertions or at rest. Medications effective in such situations are Kalmia, Tabacum and Convallaria. These variations may be required depending on the types of symptoms you may show such as a quick heart rate or a slow heart rate.
A palpitation caused by hyperthyroidism: Excessive secretion of thyroid is called hyperthyroidism and can cause a host of problems within the body including palpitation. Iodum and Spongia are two excellent medications in treating variations of palpitations caused by an over active thyroid gland.
Palpitations caused by acidity or gastric problems: This is possibly the most common cause for palpitations and Lycopodium as well as Abies Can are two very effective homeopathic medications, which can easily remedy the situation, depending on the type of problems you are having.

Palpitations - How Homeopathic Remedies Can Help You Manage Them?

Hemothorax is a serious and possibly a life-threatening condition in which blood collects between the lungs and the chest wall due to a traumatic injury or some other factor. It can be caused due to an extrapleural or an intrapleural injury. An extrapleural injury damages the chest wall on the outside while an intrapleural injury damages the chest wall on the inside.
Sometimes, Hemothorax is accompanied by excess air in the pleural cavity, known as pneumothorax. If they both occur at the same time, the condition is said to be hemopneumothorax. When blood accumulation is as large as nearly one liter, it has the potential to lead to shock and is referred to as Massive Hemothorax, which can be fatal.

Causes-
Hemothorax can be caused by a number of factors discussed as follows:
  Traumatic injury in an accident or sports causes the pleural lining of the lungs or chest to rupture. It causes blood to spill over into the pleural cavity, and it finds no way to drain itself out. Chest and lungs are so sensitive that even the smallest of injuries (or seemingly small) have the potential to cause Hemothorax.
  Tuberculosis and other lung infections can cause Hemothorax.
  Pulmonary embolism refers to a blood clot in the lungs that can cause Hemothorax.
  Lung or pleural cancer also have the potential to cause grave disease.
  Defective blood clotting as in hemophilia in which blood lacks clotting factors can cause Hemothorax.
  Tissue necrosis in the lungs or pulmonary infarction is a lung tissue dysfunction which can cause Hemothorax.
  Tearing of pulmonary blood vessels due to an invasive surgical procedure also has the potential of causing Hemothorax.
  Patients who have undergone major surgeries like lung transplant and open- heart surgery are very likely to get Hemothorax.


Symptoms-
There are many symptoms associated with Hemothorax like low blood pressure, rapid rate of heart, cold and pale skin color, chest pain while breathing, tense and shallow
breathing, difficulty in breathing, anxiety, and restlessness.


Diagnosis-
  Physical examination includes listening to the sounds of abnormal breathing and to the sounds of liquid in the chest.
  An X-Ray image reveals the presence of liquid in the pleural cavity.
  A full Computed Tomography Scan can reveal the occurrence as well as the cause of Hemothorax.
  An ultrasound provides good insight into the situation of the lungs and the pleural cavity.
  Sometimes, a sample of the pleural fluid is extracted for test and diagnosis.


Treatment-
The procedure is performed under anesthesia. A catheter or a needle is inserted into the chest through ribs for removing air and blood from the pleural cavity. If the lung collapses, it is expanded using the chest tube, which is left attached to a closed system. This ensures the escape of air and fluid from the pleural cavity and prevents additional air from entering the pleural space. This section is hence left in a water seal or hooked up to suction.
If the injury is small, chest drainage might be sufficient depending upon the case. However, if there is a major injury, it might require stopping bleeding at its source through a surgery.


Take Away-
Hemothorax can cause a collapsed lung that might progress to lead to respiratory failure. If left untreated, Hemothorax can cause infection in pleura, lung or pleural fluid in the chest cavity. Hemothorax can cause scarring of the lung tissue and pleural membranes. Retained Hemothorax occurs when blood stays in the pleural cavity for too long. It might clot and get difficult to remove through the catheter. It might also cause the buildup of pus in the surrounding region leading to an infection. Retained Hemothorax is treated by draining the fluid differently or through a video-assisted surgical procedure. Before opting for any treatment or surgery, one should always consult a doctor.

Chest Injuries And Hemothorax - Know How Serious It Can Be!

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