What You Need to Know About Long QT Syndrome

Long QT syndrome (LQTS) is a potentially serious heart rhythm disorder that affects the heart’s electrical system, causing rapid and irregular heartbeats. These abnormal rhythms, known as arrhythmias, can sometimes be life-threatening. The condition interferes with the electrical signals that control each heartbeat, leading to dangerous disturbances in heart rhythm, especially during stress, exercise, or sleep.

On an electrocardiogram (ECG), doctors measure the heart’s electrical activity using labeled waves. The QT interval—the time between the start of the Q wave and the end of the T wave—represents the period during which the heart’s lower chambers recharge after each beat. When this interval is longer than normal, it means the heart takes too long to reset between beats, increasing the risk of sudden, abnormal rhythms.

There are two main types of LQTS. Congenital LQTS is inherited and caused by mutations in genes that regulate heart ion channels, which control the flow of charged particles in and out of heart cells. Acquired LQTS, on the other hand, develops later in life and is often linked to certain medications, low blood levels of potassium or calcium, or underlying medical conditions such as heart failure. Drugs that may trigger acquired LQTS include some antiarrhythmics, antibiotics, and antipsychotics.

Symptoms can vary but often include fainting, lightheadedness, blurred vision, weakness, and palpitations—a feeling of the heart pounding or fluttering. In severe cases, LQTS can cause seizures or sudden cardiac arrest, where the heart stops beating effectively. Without immediate treatment, this can lead to sudden death. Babies with congenital LQTS may show symptoms within weeks of birth, though others may not experience problems until adolescence or adulthood.

Treatment focuses on preventing dangerous heart rhythms. Doctors may recommend lifestyle changes, such as avoiding intense exercise or stress triggers, and medications like beta-blockers to steady the heart’s rhythm. In some cases, an implantable cardioverter-defibrillator (ICD) or surgery may be necessary.

With proper diagnosis and management, most people with long QT syndrome can lead safe, active lives. Early detection and awareness remain crucial in preventing its potentially fatal consequences.
What You Need to Know About Long QT Syndrome

Aortic Coarctation: Causes and Symptoms

Aortic coarctation is a congenital heart defect marked by the narrowing of the aorta, typically near the ductus arteriosus just past the branches supplying the upper body. This narrowing obstructs normal blood flow, increasing pressure in arteries supplying the head and upper limbs while reducing blood supply to the lower body. Though its cause is not fully understood, it is often associated with other congenital conditions like bicuspid aortic valve or Turner syndrome.

The severity of coarctation varies. In neonates with severe narrowing, symptoms can emerge within days of birth, especially after the ductus arteriosus closes. These may include rapid breathing, feeding difficulties, weak pulses in the lower extremities, and signs of heart failure. In contrast, milder cases may go undetected until adolescence or adulthood, when symptoms like hypertension, frequent headaches, chest pain, or leg fatigue during exercise appear.

Diagnosis begins with clinical signs such as differences in blood pressure between upper and lower limbs or heart murmurs. Definitive diagnosis involves imaging modalities like echocardiography for infants and MRI or CT angiography for detailed anatomical evaluation in older patients.

Treatment has advanced significantly. In infants and young children, surgical resection of the narrowed segment remains standard. However, less invasive methods such as balloon angioplasty—often with stent placement—are increasingly used, especially in older children and adults. Recent studies show improved long-term outcomes with early detection and tailored interventions, reducing risks of persistent hypertension and cardiovascular complications.

Without treatment, aortic coarctation can lead to life-threatening conditions, including aortic dissection, stroke, or premature heart failure. Lifelong follow-up is essential due to the risk of re-narrowing and related cardiovascular issues. With timely management, most patients can lead healthy, active lives.
Aortic Coarctation: Causes and Symptoms

Peripheral Artery Disease: Symptoms and Significance

Peripheral Artery Disease (PAD) is a prevalent yet underdiagnosed circulatory condition where narrowed arteries impair blood flow to the extremities, predominantly the legs. Often asymptomatic in its early stages, PAD can progressively lead to debilitating and life-threatening complications if left untreated.

Hallmark Symptoms
The most characteristic symptom of PAD is claudication—pain or cramping in the legs or arms during physical activity that subsides with rest. This discomfort, commonly felt in the calves, stems from insufficient oxygen delivery to the muscles. Beyond claudication, PAD may present as leg numbness or weakness, cold sensations in one leg compared to the other, and wounds on the feet or legs that heal poorly. Advanced stages might exhibit changes in skin color, shiny skin, slower hair and toenail growth, or critical limb ischemia (CLI). CLI is a severe manifestation marked by unrelenting rest pain, ulcers, and gangrene, necessitating urgent medical attention.

Risk Factors and Implications
The risk of PAD is heightened by smoking, diabetes, hypertension, and high cholesterol. Age and a history of cardiovascular disease further increase susceptibility. Untreated, PAD not only diminishes mobility but also amplifies the risk of heart attack and stroke due to its association with systemic atherosclerosis.

Diagnosis and Management
Timely diagnosis involves physical examination, ankle-brachial index tests, and imaging studies like Doppler ultrasound. Early intervention is pivotal. Lifestyle modifications, including smoking cessation, regular exercise, and dietary adjustments, form the cornerstone of treatment. Medications such as antiplatelets, statins, and drugs for blood pressure or glucose control play a crucial role. In severe cases, revascularization procedures like angioplasty or bypass surgery may be necessary to restore adequate blood flow.

Advancements in Care
Recent innovations emphasize minimally invasive techniques and the use of bioresorbable scaffolds for vessel repair. Wearable technology for real-time monitoring of circulation and AI-driven tools for earlier detection of PAD are also being explored.

Understanding PAD's signs, risks, and treatment options can significantly enhance outcomes, underscoring the importance of awareness and early medical consultation.
Peripheral Artery Disease: Symptoms and Significance

Understanding Heart Arrhythmias: Causes, Symptoms, and Treatment

Heart arrhythmias are conditions characterized by abnormal heartbeats, which may be too fast (tachycardia), too slow (bradycardia), or irregular. These abnormalities arise due to issues with the electrical impulses that regulate the heart’s rhythm. Normally, the heart's electrical system coordinates the contraction and relaxation of the heart muscles, ensuring an efficient, rhythmic heartbeat. However, when these signals are disrupted, it results in arrhythmias, which can vary in severity from harmless to life-threatening.

Common symptoms of arrhythmias include palpitations, where individuals feel an unusual or forceful heartbeat, dizziness, shortness of breath, and chest pain. In more serious cases, arrhythmias can cause fainting spells or syncope, as well as fatigue due to reduced blood flow to the brain and other vital organs. While some arrhythmias may be benign and cause little discomfort, others can significantly increase the risk of stroke or heart failure. This happens when the heart cannot pump blood effectively, leading to blood clots that can travel to the brain and cause a stroke, or prolonged strain on the heart that can lead to failure.

There are several types of arrhythmias, each presenting unique challenges. Atrial fibrillation (AFib) is the most common form and involves the rapid and irregular beating of the atria, the heart’s upper chambers. AFib can increase the risk of blood clots and stroke. Ventricular arrhythmias, originating in the heart's lower chambers (ventricles), can be more dangerous as they disrupt the heart’s ability to pump blood efficiently, sometimes leading to sudden cardiac arrest. Bradyarrhythmias, or slow heartbeats, can deprive the body of sufficient oxygen, resulting in fainting or extreme fatigue.

The causes of arrhythmias are varied. Underlying heart conditions such as coronary artery disease or previous heart attacks can damage heart tissue, leading to electrical signal malfunctions. Other causes include high blood pressure, which puts extra strain on the heart, and congenital heart defects, which interfere with the heart’s normal electrical pathways. Lifestyle factors also contribute—smoking, excessive alcohol intake, stress, and even high levels of caffeine can all trigger arrhythmias.

Treatment approaches depend on the type and severity of the arrhythmia. For milder cases, lifestyle modifications like reducing alcohol or caffeine intake and managing stress can be effective. In more severe cases, medications such as beta-blockers or anti-arrhythmic drugs help control heart rate and rhythm. For persistent or dangerous arrhythmias, medical procedures like catheter ablation—where problematic heart tissue is destroyed to prevent abnormal signals—or the implantation of pacemakers to regulate heartbeats are often necessary. Early diagnosis and proper management are vital to preventing complications and ensuring a better quality of life for individuals living with heart arrhythmias.
Understanding Heart Arrhythmias: Causes, Symptoms, and Treatment

Understanding Coronary Artery Disease: Risk Factors, Symptoms, and Prevention

Coronary Artery Disease (CAD) is a prevalent and serious condition that affects the coronary arteries, which supply blood to the heart muscle. CAD occurs when these arteries become narrowed or blocked due to the buildup of atherosclerotic plaque. This plaque, composed of cholesterol, fatty substances, and other materials, gradually accumulates along the inner walls of the arteries. Over time, the narrowing of the arteries restricts blood flow, significantly reducing the oxygen supply to the heart muscle. When the heart doesn’t receive enough oxygen, it can result in various symptoms, including chest pain (angina), shortness of breath, and, in severe cases, heart attacks.

Several risk factors contribute to the development of CAD, with the most significant being high blood pressure, high cholesterol, smoking, diabetes, obesity, and a sedentary lifestyle. High blood pressure damages the arteries over time, making them more susceptible to plaque buildup. Elevated cholesterol levels further accelerate this process by contributing to the fatty deposits that narrow the arteries. Smoking harms the cardiovascular system by promoting inflammation and reducing oxygen levels in the blood, while diabetes increases the risk of plaque formation due to poor blood sugar control. Additionally, individuals who lead inactive lifestyles or have a genetic predisposition are at heightened risk of developing CAD.

CAD symptoms often develop slowly and may go unnoticed until the disease has advanced. Typical symptoms include chest pain, fatigue, and shortness of breath, particularly during physical exertion. However, some individuals may experience minimal or no symptoms, making the disease more dangerous as it progresses silently until a significant blockage occurs.

Preventive measures are crucial in managing CAD and minimizing complications. These include maintaining a heart-healthy diet rich in fruits, vegetables, whole grains, and lean proteins, engaging in regular physical activity, quitting smoking, and controlling chronic conditions like hypertension and diabetes. Medical treatments range from medications such as statins and beta-blockers to invasive procedures like angioplasty or coronary artery bypass grafting (CABG), which restore proper blood flow to the heart. Understanding and addressing the risk factors and symptoms of CAD can significantly improve outcomes and quality of life for those affected by this condition.
Understanding Coronary Artery Disease: Risk Factors, Symptoms, and Prevention

Brain Artery Atherosclerosis: Symptoms, Risks, and Prevention

Atherosclerosis, marked by plaque buildup in the arteries, can lead to serious issues when it affects the arteries supplying the brain. This blockage reduces blood flow and oxygen to the brain, causing various symptoms. One common sign is sudden facial numbness, often affecting one side more than the other. This numbness may come with arm or leg weakness, which can hinder daily activities and impact quality of life.

Another frequent symptom is severe headaches, sometimes described as the worst ever experienced. These headaches may be persistent and accompanied by dizziness, confusion, or speech difficulties. Such symptoms can signal a transient ischemic attack (TIA) or mini-stroke, which serves as a warning for a potential full stroke.

Paralysis is a more severe consequence of atherosclerosis in the brain’s arteries, usually affecting one side of the body, a condition called hemiplegia. Depending on the severity of the arterial blockage and the speed of medical response, this paralysis may be temporary or permanent. Additional symptoms may include loss of coordination, difficulty swallowing, and vision changes.

The severity of symptoms can vary and may develop slowly over time. Early detection and prompt medical attention are crucial in preventing further complications. Adopting a healthier lifestyle—such as eating a balanced diet, exercising regularly, and quitting smoking—can lower the risk of atherosclerosis. In some cases, medication or surgery may be required to restore proper blood flow to the brain.
Brain Artery Atherosclerosis: Symptoms, Risks, and Prevention

Atherosclerosis: Understanding its Impact on Heart Arteries

Atherosclerosis is a pervasive and progressive disease primarily affecting medium-sized arteries, with significant clinical manifestations including ischemic heart disease, cerebrovascular disease, or peripheral arterial disease. Among these, coronary artery disease stands out as a critical consequence of atherosclerosis, exerting profound impacts on heart health.

Coronary Artery Disease: When atherosclerosis narrows the arteries supplying blood to the heart, it precipitates coronary artery disease (CAD). This condition can lead to angina (chest pain), myocardial infarction (heart attack), or heart failure. The insidious nature of atherosclerosis means that it can progress silently over many years, causing damage before symptoms become apparent.

Symptoms of Atherosclerosis in Heart Arteries:
Chest Pain or Pressure: Commonly referred to as angina, this discomfort often arises during physical exertion or emotional stress due to reduced blood flow to the heart muscle.

Difficulty Breathing: As the heart struggles with inadequate blood supply, individuals may experience shortness of breath, particularly during exertion or when lying flat.

Vomiting: In severe cases, atherosclerosis affecting heart arteries can lead to nausea and vomiting, particularly if it culminates in a heart attack.

Coughing: Persistent coughing may occur as a result of fluid buildup in the lungs due to heart failure, an outcome of advanced coronary artery disease.

Advances in Treatment and Prevention: Over recent years, advances in medical technology have enhanced our ability to diagnose and treat atherosclerosis. Lifestyle modifications, including dietary changes, regular exercise, and smoking cessation, play a pivotal role in preventing its progression. Moreover, novel medications and interventions such as angioplasty and stenting offer effective strategies to manage coronary artery disease and its complications.

Understanding the insidious nature of atherosclerosis empowers individuals to adopt proactive measures to safeguard heart health, underscoring the importance of early detection and intervention in mitigating its potentially devastating consequences.

Atherosclerosis: Understanding its Impact on Heart Arteries

Understanding Pulmonary Arterial Hypertension

Pulmonary arterial hypertension (PAH) is a condition characterized by elevated blood pressure in the pulmonary arteries, leading to significant strain on the heart and impairing its ability to pump blood effectively. In normal circumstances, resting pulmonary artery systolic pressure typically ranges from 18 to 20 mmHg. However, in PAH, this pressure exceeds 25 mmHg at rest or rises above 30 mmHg with exercise, with a pulmonary capillary wedge pressure less than 15 mmHg as measured by right heart catheterization.

PAH can arise from a variety of underlying conditions affecting the pulmonary, cardiac, or systemic systems. Symptoms often manifest due to right ventricular failure or cor pulmonale, and may include dyspnea, fatigue, syncope, lower extremity edema, and atypical chest pain.

Furthermore, patients may initially experience exertional breathlessness, which can progress to exertional syncope or chest pain as the condition worsens.

Recent advancements in understanding the pathophysiology of PAH have led to targeted therapies that aim to alleviate symptoms, improve quality of life, and potentially slow disease progression. Early diagnosis and intervention are crucial in managing PAH and improving patient outcomes.
Understanding Pulmonary Arterial Hypertension

Unveiling the Complexities of Peripheral Artery Disease (PAD)

Peripheral artery disease (PAD) is a relentless narrowing of arteries that crucially carry blood away from the heart, often suffocating vital organs and limbs. While it can afflict various regions, lower-extremity PAD, specifically impeding blood flow to the legs and feet, stands as the most prevalent form. This condition stems from atherosclerosis, a process characterized by the accumulation of fatty deposits and other substances within arteries, progressively constricting their lumens.

Unveiling the intricacies of PAD reveals its pervasive impact, extending beyond the lower extremities. Atherosclerosis, the culprit behind PAD, indiscriminately encroaches upon arteries throughout the body, including those vital for heart, brain, arm, leg, pelvic, and renal function. Such widespread arterial blockage underscores the urgent need for early diagnosis to mitigate grave secondary vascular events like acute myocardial infarction (AMI) or stroke.

Swift identification of occlusive arterial disease hinges upon noninvasive assessments, with the ankle-brachial index (ABI) emerging as a cornerstone diagnostic tool. Not only does ABI discern the presence of arterial compromise, but it also furnishes invaluable insights into the prognosis of affected limbs, prognosticating the likelihood of AMI during follow-up.

PAD's insidious nature often conceals its presence in its nascent stages, camouflaging its progression until symptomatic manifestations emerge. These symptoms, such as intermittent claudication and rest pain, serve as ominous harbingers of advancing disease. Intermittent claudication, characterized by muscle aches or cramps following exertion, abates with rest but underscores compromised arterial circulation. Conversely, rest pain, an affliction haunting patients even in repose, signals critical limb ischemia—a dire consequence of oxygen deprivation to tissues. Such ischemic insults perpetuate a vicious cycle, hindering wound healing and fostering ulceration and gangrene. As PAD advances unabated, ulceration festers and gangrene ensues, precipitating the ominous specter of limb loss and necessitating amputation as a last resort.

In conclusion, the labyrinthine nature of PAD underscores the imperative of vigilance in diagnosis and management. Early detection facilitated by ABI empowers clinicians to intervene preemptively, averting catastrophic vascular sequelae. By unraveling PAD's enigma and prioritizing comprehensive care, we can strive towards preserving both life and limb in the face of this formidable arterial adversary.
Unveiling the Complexities of Peripheral Artery Disease (PAD)

Ischemic Heart Disease Overview

Ischemic heart disease (IHD) is a complex condition characterized by inadequate myocardial perfusion due to reduced blood supply or increased myocardial oxygen demand, often attributed to atherosclerosis of the coronary arteries. This ailment, now rampant among millions of Americans, stands as the foremost cause of mortality in industrialized nations, representing the prevalent face of cardiovascular disease.

Ischemia, the hallmark of this disease, transpires when a particular body region suffers from diminished blood supply, leading to cellular necrosis in severe cases. In the normal cardiac physiology, the myocardium's oxygen requisites are meticulously met by the coronary arterial circulation. The heart, functioning aerobically, relies on oxidative phosphorylation to fuel its contractions, with oxygen delivery contingent upon blood oxygen content and coronary blood flow. Any escalation in cardiac workload precipitates an augmented demand for oxygen, accentuating the risk of ischemic events.

Symptoms of ischemic heart disease encompass a spectrum of manifestations, with chest pain—commonly radiating to the left arm, jaw, shoulders, and back—standing as a cardinal feature. Concurrently, dyspnea and diaphoresis may ensue, indicative of compromised cardiac function and the body's physiological response to stress.

In essence, understanding the intricate interplay between reduced blood supply and heightened myocardial oxygen demand underscores the pathophysiology of ischemic heart disease. Recognizing its ubiquitous presence and formidable toll on public health, efforts must persist in elucidating preventive measures, early detection strategies, and efficacious therapeutic interventions to mitigate its adverse impact and alleviate the burden it imposes on individuals and societies alike.
Ischemic Heart Disease Overview

Understanding Angina Symptoms

Angina refers to discomfort or pain in the chest that arises due to a decrease in blood flow to the heart muscle. This sensation might be likened to the presence of a weighty pressure on the chest. Scientifically termed angina pectoris, this condition emerges when the blood flow coursing through the coronary arteries to the heart muscle becomes inadequate to fulfill the heart's need for oxygen, particularly during periods of physical activity.

The primary contributor to diminished blood flow to the heart among individuals with angina is coronary heart disease. Varied categories of angina exist, including stable angina, unstable angina, variant angina, and refractory angina.

The primary indicator of angina is chest pain, accompanied by other potential symptoms. Chest pain may be indicative of angina if it:

*Presents as tightness, a dull ache, or a heavy sensation – though some individuals (especially women) might encounter sharp, piercing pain.
*Radiates to the arms, neck, jaw, or back.
*Gets provoked by physical exertion or stress.
*Subsides within a few minutes of rest.

Additional symptoms associated with angina encompass:*Feelings of nausea.
*Aching in the lower chest or abdomen, akin to indigestion.
*Profound sensations of fatigue.
*Dizziness.
*Weariness.
*Breathlessness.
*Perspiration.
*Understanding Angina Symptoms
Understanding Angina Symptoms

Carotid artery disease symptoms

The carotid arteries are major blood vessels that provide human brain’s blood supply. Carotid artery disease occurs when fatty deposits (plaques) clog the blood vessels that deliver blood to the brain and head (carotid arteries). This is where thinking, speech, personality, and sensory and motor functions reside.

Carotid artery stenosis, also called carotid artery disease, is a condition that can lead to stroke. As the condition advances, the most common first sign of carotid artery disease may be a transient ischemic attack (TIA), also called a mini-stroke. For some people, a stroke is the first sign of any problem.

A TIA occurs when there is low blood flow or a plaque briefly blocks an artery that supplies blood to the brain. the person at a higher risk of stroke. With a TIA, the person may have the same symptoms as he would have for a stroke. It usually lasts a few minutes to an hour. Symptoms go away entirely within 24 hours, with complete recovery.

Signs and symptoms of a stroke or TIA include:
*Numbness or loss of feeling in the face or in an arm or leg
*Difficulty speaking (called aphasia) and understanding
*Sudden loss of vision, blurred vision, or difficulty in seeing out of one or both eyes
*Sudden dizziness or loss of balance
*Sudden, severe headache with no known cause

The symptoms of a TIA and stroke are the same. A stroke is loss of blood flow (ischemia) to the brain that continues long enough to cause permanent brain damage.
Carotid artery disease symptoms

Pulmonary embolism

Pulmonary embolism is a blockage that developed when a blood clot gets caught in one of the arteries that go from the heart to the lungs. The clot blocks the normal flow of blood.

A blood clot that forms in a blood vessel in one area of the body, breaks off, and travels to another area of the body in the blood is called an embolus. An embolus can lodge itself in a blood vessel. This can block the blood supply to a particular organ.

Pulmonary embolism restricts blood flow to the lungs, lowers oxygen levels in the lungs and increases blood pressure in the pulmonary arteries.

In most cases, pulmonary embolism is caused by blood clots that travel to the lungs from deep veins in the legs or, rarely, from veins in other parts of the body (deep vein thrombosis). These clots develop when the blood can’t flow freely through the legs because human body is still for a long time, say during a long flight or drive.

Common signs and symptoms include:
*Shortness of breath
*Chest pain
*Cough
*Difficulty breathing
*Panting
*Fast heartbeat

If left untreated, acute pulmonary embolism is associated with a mortality rate as high as 30%.

Pulmonary embolism is often difficult to diagnose because the signs and symptoms of pulmonary embolism are a lot like those of many other conditions and diseases. Imaging tests and blood tests are used to look for a pulmonary embolism.
Pulmonary embolism

Symptoms of atherosclerosis

Atherosclerosis is the condition in which an artery wall thickens as the result of a build-up of fatty materials such as cholesterol. This buildup is called plaque. The plaque can cause arteries to narrow, blocking blood flow. The plaque can also burst, leading to a blood clot.

Plaque buildup can slow and even stop blood flow. This means the tissue supplied by the artery is cut off from its blood supply. This often leads to pain or decreased function. Atherosclerosis remains clinically silent until organ ischemia causes symptoms.

Symptoms depend on which arteries are affected. For example:
• Coronary arteries of the heart—May cause symptoms of heart disease, such as chest pain or pressure (angina).
• Arteries to the brain—May cause symptoms of sudden numbness or weakness in arms or legs, difficulty speaking or slurred speech, temporary loss of vision in one eye, or drooping muscles in face. These signal a transient ischemic attack (TIA), which, if left untreated, may progress to a stroke.
• Arteries in the lower extremities—May cause pain in the legs or feet and trouble walking
Symptoms of atherosclerosis

Congestive heart failure

Congestive heart failure (CHF) is a complex clinical syndrome that can result from any functional or structural cardiac disorder that impairs the ventricle’s ability to fill with or eject blood.

Heart failure symptoms usually develop over time as the heart becomes weaker and less able to pump the blood that your body needs. Heart failure usually results in an enlarged heart (left ventricle).

Several studies have found that CHF is associated with a 2-year mortality rate of approximately 45–50%, which approaches that of many malignancies.

The syndrome of CHF arises as a consequence of an abnormality in cardiac structure, function, rhythm, or conduction. The most common cause of heart failure is coronary artery disease (CAD). CAD occurs when arteries that supply blood to the heart muscle become narrowed by buildups of fatty deposits called plaque.

Patients usually present with symptoms of dyspnea, decreased exercise tolerance and fluid retention, characterized by pulmonary and peripheral edema.
Congestive heart failure

Coronary Artery Disease

The heart is a muscle that pumps blood around the body through a series of pipes. These pipes are called arteries. The left side of the heart receives fresh, oxygen-rich blood from the lungs and then pumps it out a large artery called the aorta that branches into smaller arteries that go to all parts of the body.

Coronary heart disease (CHD), also called coronary artery disease, is the leading cause of death in the United States for both men and women. CHD occurs when plaque builds up inside the coronary arteries.

Plaque is made up of fat, cholesterol, calcium, and other substances found in the blood. Over time, plaque hardens and narrows the arteries, reducing blood flow to the heart muscle. When plaque builds up in the arteries, the condition is called atherosclerosis. The buildup of plaque occurs over many years.

Coronary artery disease is caused by a combination of genetic and lifestyle factors.

These are called risk factors. The following risk factors are important to be aware of but are not considered to be controllable:
• Age. As the person get older, the risk of heart disease increases
• Gender. Age of 55 are at higher risk of heart disease. For persons aged 40 years, the lifetime risk of developing coronary heart disease is 49 percent in men and 32 percent in women. After menopause, a woman’s risk of heart disease gradually becomes the same as a man’s
• Heredity. Risk of heart disease is increased if close family members—a parent brother or sister—developed heart disease before age 55 or, in the case of female relatives, before menopause.
• Ethnicity

The risk factors that can be controlled are:
• Smoking
• Excess fats and cholesterol in the blood
• High blood pressure (hypertension)
• Abnormal blood cholesterol levels
• Lack of regular exercise
• Excess sugar in the blood (often due to diabetes)
• Excessive stress levels
• Depression

Research suggests that coronary artery disease starts when certain factors damage the inner layers of the coronary arteries. These factors include smoking, high amounts of certain fats and cholesterol in the blood, high blood pressure, and high amounts of sugar in the blood due to insulin resistance or diabetes.

When damage occurs, your body starts a healing process. This process causes plaque to build up where the arteries are damaged.

Coronary artery disease makes it more difficult for oxygen-rich blood to move through arteries. Common symptoms of coronary artery disease include:
• Angina: Upper body pain or pressure. Angina is chest pain or discomfort. It may feel like pressure or squeezing in the chest. The pain also can occur in the shoulders, arms, neck, jaw, or back. Angina pain may even feel like indigestion.
• Shortness of breath: Shortness of breath (dyspnea) with exertion, or chest tightness, squeezing, or burning.
Coronary Artery Disease

Atrial fibrillation

Atrial fibrillation (AF) is a common and important disturbance of the electrical system of the heart. It is characterized by uncoordinated atrial activation with consequent deterioration of mechanical function. It is one of a number of disorders commonly referred to as ‘arrhythmias’ or ‘dysrhythmias’, in which the heart beats with an abnormal rhythm.

Some symptoms for AF including:
• Irregular and rapid heartbeat
• Heart palpitations or rapid thumping inside the chest
• Dizziness, sweating and chest pain or pressure
• Shortness of breath or anxiety
• Tiring more easily when exercising
• Fainting (syncope)

AF itself usually isn’t life-threatening. But it can lead to other serious problems. These include chronic fatigue, congestive heart failure and stroke.

In 2010, the estimated numbers of men and women with AF world-wide were 20.9 million and 12.6 million, respectively, with higher incidence and prevalence rates in developed countries. One in four middle-aged adults in Europe and the US will develop AF. By 2030, 14 – 17 million AF patients are anticipated in the European Union, with 120 000 – 215 000 newly diagnosed patients per year.

The most common causes of AF are long-term high blood pressure, coronary heart disease (reduced blood flow to the heart caused by clogging of the arteries) or valvular heart disease (problems with the valves of the heart that normally keep blood flowing in the right direction). Another less common, but treatable, cause is hyperthyroidism (an overactive thyroid gland).
Atrial fibrillation

Symptoms of heart arrhythmia

Arrhythmia can lead to cardiopulmonary arrest and death; otherwise, the symptom of arrhythmia can be subtle and intermittent.

It is the result of a disturbance that alters the transmission of electrical impulses within the heart affecting the normal rhythm or rate of the heartbeat.

The symptoms are primarily due to the hemodynamic effects to the cardiac rhythm disturbance. Noticeable arrhythmia symptoms may include:
*A fluttering in your chest
*A racing heartbeat (tachycardia)
*A slow heartbeat (bradycardia)
*Chest pain
*Shortness of breath
*Peripheral vascular embolization Dyspnea
*Acute neurologic deficits
*Lightheadedness or dizziness
*Sweating Isolated or recurrent loss of consciousness (syncope) or near fainting
Symptoms of heart arrhythmia

Carotid artery disease

The carotid arteries are the large arteries in the neck that supply blood to the brain. If plaque from atherosclerosis clogs these arteries, doctors call it carotid artery disease (which is a type of peripheral vascular disease).

This can potentially cause decreased blood flow to parts of the brain and can be the cause of a stroke (called a cerebrovascular accident, CVA for short).

Carotid artery disease is one of the additional risk factors for development or present of atherosclerotic coronary heart disease in patents of all ages, including the elderly.

Patients with asymptomatic carotid artery disease have a higher risk of cardiac ischemic event than of a stroke.

Factors that lead to evaluation for carotid artery disease include high-risk patients, suspicious neurological symptoms, and carotid bruits. Seizure, migraine and cardiogenic syncope cam mimic the signs and symptoms of cerebrovascular disease.
Carotid artery disease

Pulmonary stenosis

The majority of pulmonary stenosis are conginetal. It cause by abnormal formation of the pulmonary valve leaflets during fetal cardiac development. Rarely, rheumatic heart disease, malignant carcinoid, or extrinsic compression by a tumor or sinus of valsalva aneurysm may lead to pulmonary stenosis.

Pulmonary stenosis can be valvular, subvalvular or supravalvular. Valvular pulmonary stenosis is the most common, accounting for 90% cases.

Subvalvular pulmonary stenosis can occur as part of a conginetal heart complex such as tetralogy of Fallot or as a result of hypertrophic obstructive cardiomyopathy involving the right side of the heart.

Patients with pulmonary stenosis may live for extended periods completely without symptoms and frequently survive past the age of 70 years without surgical intervention, when they do occur, include tachypnea, syncope, angina or hepatomegaly and peripheral edema.
Pulmonary stenosis