Disorders Of Circulatory System: Symptoms And Risk Factors

What is the Circulatory System?

The circulatory system, also known as the cardiovascular system, is one functional unit in the human body that is specialised in the flow of blood carrying nutrients and supplies of oxygen to cells and from one place to another within an organism. This system is, therefore, paramount in ensuring the maintenance of homeostasis, proper functionality of all processes of metabolism, and, therefore, the perfect condition of all organs and tissues. A deficiency in blood circulation would deprive the cells of all substances necessary to carry out all activities, and waste products could not be removed fast enough, with a probability of damage and disease occurring in cells.

Types of Circulatory System Disorders

These disorders directly affect overall circulatory health by being involved in the delivery of basic nutrients and oxygen normally required by tissues. Therefore, knowledge regarding these disorders, their causes, symptoms, and treatment is very necessary for prevention and management.

Hypertension (High Blood Pressure)

• Hypertension is a state wherein an individual shows a persistent elevation of blood pressure within the arteries.

• Some risk factors predisposing to hypertension are genetic factors, obesity, lack of exercise, excessive intake of salt, stress, advanced age, and others.

• This is often asymptomatic but may present with headaches, shortness of breath, or epistaxis.

• Diagnosis by repeated blood pressure measurement.

• Management consists of lifestyle changes such as diet, exercise, salt restriction, certain medications, and close follow-up.

Atherosclerosis

• The deposition of fatty material, called plaque, on the inner wall of the arteries narrows and hardens the arteries in conditions such as atherosclerosis. This can result in limited blood flow.

• Some of the risk factors include high levels of cholesterol, smoking, high blood pressure, diabetes and lack of exercise.

• Possible symptoms include pain in the chest or angina, shortness of breath, and easy fatigability.

• The diagnosis is made by blood tests and imagery that includes angiography and ultrasound.

• Treatment includes lifestyle modifications and medications such as statins along with angioplasty.

Coronary Artery Disease (CAD)

• It is the condition in which coronary arteries are narrowed or blocked due to atherosclerosis.

• It is the most common cause of heart disease.

• Chest pain, difficulty in breathing, and fatigue are some of the symptoms.

• Complications further result in heart attacks and heart failure.

• The diagnosis is carried out with an ECG, stress tests, and angiography.

• Treatment by medication, lifestyle modifications, and surgical intervention to stent or bypass.

Heart Attack (Myocardial Infarction)

• A heart attack is when blood flow to some part of the heart is blocked long enough that the area of the heart muscle is injured or dies.

• Symptoms are chest pain, difficulty breathing, feeling sick to your stomach, and sweating.

• Treatment must be accessed immediately, which includes medications to dissolve blood clots, angioplasty, or bypass surgery on the coronary arteries.

• Cardiac rehabilitation and major lifestyle changes can help a person recover and resume daily activities.

Stroke (Ischemic & Hemorrhagic)

• A stroke means the flow of blood to some of the parts of the brain gets obstructed or is severely reduced. Blockages cause ischemic stroke, and bleeding causes hemorrhagic strokes.

• Causes are hypertension, smoking, high cholesterol, and atrial fibrillation.

• Symptoms include sudden numbness, confusion, trouble speaking, and severe headaches.

• Diagnosed with a CT or MRI scan.

• There are treatments available for emergencies, including clot-busting drugs used in the treatment of ischemic stroke patients.

• Hemorrhagic stroke patients may require surgery.

Arrhythmias

• Arrhythmias are irregular heartbeats. The heartbeat may be too fast called tachycardia, too slow called bradycardia, or irregular referred to as fibrillation.

• Their causes include heart disease, an electrolyte imbalance in body fluids, injury from a heart attack or the healing changes after heart surgery.

• Symptoms can include palpitations, dizziness, and shortness of breath.

• Diagnosed with ECG and Holter monitoring.

• Treatments include medications, lifestyle changes, pacemakers, and surgical procedures like ablation.

Heart Failure

• Heart failure is a syndrome involving the inability of the heart to pump adequately to circulate blood to meet bodily needs.

• Contributing factors include coronary artery disease, hypertension, and previous heart attacks.

• Symptoms include shortness of breath, fatigue, and swelling in the legs.

• It is diagnosed by ECG, echocardiography, and blood tests.

• Treatment involves drugs, behavioural modifications, and heart transplantation in the advanced stages.

Peripheral Artery Disease (PAD)

• PAD is the narrowing of peripheral arteries, commonly those in the lower extremities, due to atherosclerosis.

• The causes include smoking, diabetes mellitus, obesity, and high blood pressure. Symptoms include pain in the legs while walking, numbness, and weak pulses in the legs.

• Treatment includes lifestyle modifications, medications, and surgery in severe cases.

Deep Vein Thrombosis (DVT)

• DVT is a blood clotting in a deep vein, usually in the legs.

• The causes are immobility over a prolonged period, surgery, and inherited clotting disorders.

• Symptoms include swelling, pain, and redness in the affected limb.

• Prevention includes moving regularly during long journeys, for example, air, car, or bus trips wearing compression stockings and medications for high-risk individuals.

• Anticoagulant meds and thrombolytic therapy are used to treat blood clots. If the clot moves to the lungs, it can result in a complication of pulmonary embolism.

Varicose Veins

• Varicose veins are those that are swollen, twisted, and visible under the skin, mostly occurring in the legs.

• Weak or damaged valves in the veins and prolonged standing contribute to this problem.

• Symptoms include aching pain and heaviness in the legs as well as swelling.

• The risk factors for varicose veins include age, gender, more common among the female population and family history.

• Treatment options range from lifestyle changes and compression stockings to sclerotherapy and vein stripping.

Diagnostic Methods for Circulatory Disorders

Accurate diagnosis is essential for effective treatment and treatment management of circulatory disorders.

Blood Tests

• Blood tests may reveal levels of cholesterol, blood glucose, and markers of inflammation.

• These indicators give the notion about the risks of acquiring heart diseases and other circulatory disorders.

Imaging Techniques

• These techniques are used to produce images of the heart structure and blood vessels' activities.

• Angiography is a technique that includes the use of contrast dye to outline the blood flow in arteries.

Electrocardiogram (ECG)

• An ECG records electrical activity from the heart over some time.

• It discovers arrhythmias, heart attacks, and other heart conditions.

Echocardiogram

• The echocardiogram applies ultrasound waves to take images of the heart.

• It values the function, structure, and blood flow of the heart.

Disorders of the Circulatory System NEET MCQs (With Answers & Explanations)

Types of questions asked from this topic are:

• Disorders related to circulatory system

• Diagnostic methods

Practice Questions for NEET

Q1. How does VSD (ventricular septal defect) affect newborn babies? Select the most accurate consequence of VSD from the following options:

1. The integrity of the chordae tendineae is compromised.

2. The delivery of deoxygenated blood from body tissues to the heart is hindered.

3. Oxygenated and deoxygenated blood will get mixed with each other.

4. The heart's ability to contract is impaired.

Correct answer: 3) Oxygenated and deoxygenated blood will get mixed with each other.

Explanation:

In newborn babies with VSD, a ventricular septal defect, the consequence is that oxygenated and deoxygenated blood will mix within the heart. This occurs because the hole in the intraventricular septum allows blood to flow between the left and right ventricles, causing a mixing of oxygen-rich and oxygen-poor blood. This can lead to various complications and affects the overall oxygenation of the blood in the body.

Hence, the correct answer is option 3) Oxygenated and deoxygenated blood will get mixed with each other.

Q2. Blood pressure in the mammalian aorta is maximum during :

1. Systole of the left ventricle

2. Diastole of the right atrium

3. Systole of the left atrium

4. Diastole of the left ventricle

Correct answer: 1) Systole of the left ventricle

Explanation:

Disorders of the Circulatory System -

Because the heart stimulates and pushes lots of blood to the aorta. Hence during systole, the pressure is maximum in the aorta

Hence, the correct answer is option 1) Systole of the left ventricle.

Q3. When the heart is not pumping the blood effectively enough to meet the needs of the body , it is called

1. Heart failure

2. Cardiac arrest

3. Heart attack

4. Angina

Correct answer: 1) Heart failure

Explanation:

Heart failure means the state of the heart when it is not pumping blood effectively enough to meet the needs of the body. It is sometimes called congestive heart failure because congestion of the lungs is one of the main symptoms of this disease. Heart failure is not the same as cardiac arrest (when the heart stops beating) or a heart attack (when the heart muscle is suddenly damaged by an inadequate blood supply).

Hence, the correct answer is option 1) Heart failure.

Also Read:

• MCQs on Disorders of the Circulatory System

• Cardiac Output

• Coronary Circulation

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