What Does a Cardiologist Do and When Should You See One?

Your heart works continuously, whether you’re having a busy day or simply relaxing at home. Most people don’t think much about their heart until something feels different. New symptoms, unusual test results, or certain health conditions may raise an important question: When should you see a cardiologist?

A cardiologist is a medical doctor who specializes in the heart and blood vessels. They diagnose and treat cardiovascular conditions, manage risk factors, and help patients protect their heart health. For Arizona residents, heart health deserves particular attention. Extreme summer temperatures can place additional stress on the cardiovascular system, while conditions such as high blood pressure, diabetes, and high cholesterol can increase the risk of heart disease.

What Is a Cardiologist?

A cardiologist specializes in diagnosing, treating, and preventing diseases affecting the heart and blood vessels. The heart pumps oxygen-rich blood throughout the body and plays a central role in keeping your organs and tissues functioning properly. When the heart isn’t working as it should, symptoms may affect your breathing, energy, mobility, and ability to perform everyday activities.

Cardiologists commonly diagnose and manage:

• Coronary artery disease
• High blood pressure
• Arrhythmias and other heart rhythm disorders
• Heart failure
• Heart valve disease
• Cardiomyopathy
• Congenital heart conditions
• High cholesterol and other cardiovascular risk factors

Some cardiologists also focus on areas such as preventive cardiology, heart rhythm disorders, or advanced heart failure.

What Does a Cardiologist Do?

A cardiologist evaluates your symptoms, medical history, risk factors, and overall cardiovascular health. Depending on your situation, they may recommend diagnostic testing, medication, lifestyle changes, or ongoing monitoring.

Reviewing Your Symptoms and Medical History

During your appointment, your cardiologist may ask about:

• Chest pain, pressure, or discomfort
• Shortness of breath
• Palpitations or an irregular heartbeat
• Dizziness or fainting
• Blood pressure and cholesterol levels
• Diabetes or other medical conditions
• Family history of heart disease
• Current medications

A physical examination may include checking your blood pressure and listening to your heart and lungs.

Common Heart Tests

Your cardiologist will determine which tests are appropriate based on your symptoms and medical history. Common cardiovascular tests include:

ECG or EKG: Records the heart’s electrical activity and can help identify abnormal heart rhythms.

Echocardiogram: Uses ultrasound to evaluate the heart’s structure, pumping function, and valves.

Stress Test: Evaluates how the heart responds to physical activity.

Heart Monitor: Tracks heart rhythm over an extended period, which can be helpful when investigating palpitations or intermittent irregular heartbeats.

Blood Tests: Can help evaluate cholesterol, blood sugar, and other cardiovascular risk factors.

Cardiac Imaging: CT scans and other imaging studies may be used when a closer look at the heart or blood vessels is needed.

Not everyone needs every test. Your cardiologist will recommend testing based on your individual needs.

When Should You See a Cardiologist?

You don’t necessarily need to wait until you’ve been diagnosed with heart disease. Certain symptoms and risk factors may indicate that a cardiovascular evaluation is appropriate.

You Have Chest Pain or Pressure

Chest discomfort can have many causes, including muscle strain, indigestion, and heart-related conditions. However, new or unexplained chest pressure, tightness, squeezing, or discomfort should not be ignored. Heart-related discomfort may sometimes spread to the arm, neck, back, or jaw.

If chest discomfort occurs suddenly or is accompanied by shortness of breath, dizziness, sweating, or other concerning symptoms, call 911 and seek emergency medical care.

You’re Experiencing Unexplained Shortness of Breath

Getting unusually short of breath during activities that were previously easy for you can be a reason to speak with a doctor. Shortness of breath may be related to lung conditions, anemia, low fitness levels, or other health problems. It can also occur with cardiovascular conditions such as coronary artery disease or heart failure.

Arizona’s extreme heat can make physical activity more difficult, but significant or sudden changes in your breathing should not automatically be attributed to the weather.

You Have Frequent Palpitations

An occasional extra or skipped heartbeat can happen to many people. However, frequent, persistent, or uncomfortable palpitations may require evaluation.

You may notice:

• Fluttering in your chest
• A pounding heartbeat
• A racing heart
• Skipped beats
• Dizziness or lightheadedness

An ECG or heart monitor may help determine whether an abnormal heart rhythm is present. If palpitations occur with chest pain, fainting, severe shortness of breath, or other serious symptoms, seek emergency medical care.

Your Blood Pressure Is Difficult to Control

High blood pressure often has no noticeable symptoms, but it can place additional strain on the heart and blood vessels over time. Primary care physicians commonly manage high blood pressure. However, if your blood pressure remains difficult to control despite treatment, a cardiologist may provide additional evaluation and management.

You Have High Cholesterol or a Family History of Heart Disease

High cholesterol can contribute to plaque buildup in the arteries and increase cardiovascular risk. Family history is another important factor. If a parent or sibling experienced heart disease or a heart attack at a relatively young age, tell your doctor. Your family history may help determine whether additional cardiovascular risk assessment is appropriate.

You Have Diabetes or Multiple Heart Disease Risk Factors

Several health and lifestyle factors can increase your risk of cardiovascular disease.

These may include:

• Diabetes
• Obesity
• Kidney disease
• Smoking
• Physical inactivity
• High cholesterol
• High blood pressure
• Poor diet

Having multiple risk factors doesn’t necessarily mean you have heart disease, but it may be a good reason to discuss prevention and cardiovascular risk with your doctor.

You Experience Dizziness or Fainting

Dizziness or fainting can occur for many reasons, including dehydration, medication side effects, and other medical conditions.

In Arizona, dehydration can be a particular concern during periods of extreme heat. However, repeated dizziness or fainting may sometimes be associated with a cardiovascular condition and should be evaluated. If dizziness or fainting occurs with chest pain or significant shortness of breath, seek emergency medical care.

Your Heartbeat Feels Unusually Fast or Irregular

A consistently fast or irregular heartbeat can have several possible causes. While some rhythm changes may be harmless, others require treatment. A cardiologist can evaluate your symptoms, determine whether an abnormal rhythm is present, and recommend appropriate treatment when necessary.

How Can Arizona Heat Affect Your Heart?

If you live in Phoenix, Mesa, Chandler, Scottsdale, Gilbert, or surrounding Arizona communities, you’re familiar with extreme summer temperatures. When temperatures rise, your body works harder to regulate its temperature. Blood vessels expand to move more blood toward the skin, your heart may beat faster, and sweating increases.

For most healthy people, the body can manage these changes. However, older adults and people with cardiovascular conditions may be more vulnerable to heat-related stress.

Extreme heat can contribute to:

• Dehydration
• Increased heart rate
• Low blood pressure
• Heat exhaustion or heat stroke
• Worsening of existing cardiovascular conditions

Some medications used to treat high blood pressure and heart conditions may also affect how the body responds to heat and dehydration.

Protecting Your Heart During Extreme Heat

Stay hydrated, limit strenuous outdoor activity during the hottest parts of the day, and take breaks when exercising or working outside. If you become unusually lightheaded, weak, short of breath, or unwell, stop the activity and move to a cooler environment. Most importantly, don’t dismiss unusual symptoms simply because the weather is hot.

Primary Care Doctor vs. Cardiologist

Primary care physicians and cardiologists both play important roles in cardiovascular health, but their responsibilities are different. Primary Care Physician: Manages your overall health, performs routine screenings, treats common medical conditions, and can refer you to a specialist when necessary.

Cardiologist: Focuses specifically on the heart and blood vessels and evaluates, diagnoses, and treats cardiovascular conditions. You may work with both doctors. Your primary care physician may identify a potential heart-related concern and recommend a cardiology evaluation.

What Is Preventive Cardiology?

Preventive cardiology focuses on identifying and reducing the factors that may increase your risk of heart disease.

A preventive cardiology evaluation may consider your:

• Blood pressure
• Cholesterol
• Blood sugar
• Weight
• Lifestyle habits
• Family history
• Existing medical conditions
• Overall cardiovascular risk

Depending on your risk, your doctor may recommend lifestyle changes, monitoring, or medication. You don’t necessarily need to have symptoms or a diagnosed heart condition to take a proactive approach to cardiovascular health.

Why Is Early Detection Important?

Some cardiovascular conditions can develop with few noticeable symptoms. Regular health evaluations can help identify risk factors or potential problems before they become more serious. Early evaluation may also provide more opportunities to manage risk through lifestyle changes, medications, monitoring, or other treatments.

If you’re concerned about your cardiovascular health, talking with your primary care physician or a cardiologist can help you determine the next step.

What Should You Expect at Your First Cardiology Appointment?

Your first cardiology appointment is an opportunity for your doctor to understand your symptoms, medical history, and cardiovascular risk. Your cardiologist may review your medical records, perform a physical examination, discuss your symptoms, and determine whether additional testing is necessary.

What Should You Bring?

Consider bringing:

• A current list of medications
• Previous heart tests or procedures
• Relevant medical records
• Recent blood pressure readings, if available
• A list of symptoms you’ve experienced
• Your family history of heart disease
• Questions you’d like to ask

If you use a smartwatch or wearable device that records heart rate or rhythm information, you may also want to share relevant readings with your doctor.

Questions to Ask Your Cardiologist

You may want to ask:

• What could be causing my symptoms?
• Do I need any tests?
• What is my cardiovascular risk?
• Do I need medication?
• What lifestyle changes would benefit my heart?
• How often should I follow up?

Understanding your cardiovascular health can make it easier to take an active role in your care.

How Can You Take Care of Your Heart?

Cardiology isn’t only about treating existing heart conditions. Everyday habits also play an important role in maintaining cardiovascular health.

Eat a Heart-Healthy Diet

Include fruits, vegetables, whole grains, beans, nuts, and lean sources of protein in your diet. Limit excess sodium, added sugars, and unhealthy fats. Small, sustainable changes can make healthy eating easier to maintain over time.

Stay Physically Active

Regular physical activity supports cardiovascular health. Walking, swimming, cycling, and other forms of exercise can help you stay active. If you have chest pain, unusual shortness of breath, or irregular heartbeats, speak with your doctor before starting or changing an exercise program.

Manage Stress and Prioritize Sleep

Chronic stress and poor sleep can make it harder to maintain healthy habits. Aim for consistent, quality sleep and make time for activities that help you relax. During Arizona’s hottest months, indoor options such as walking in a shopping mall or using an indoor recreation facility can help you stay active while avoiding extreme temperatures.

Keep Up With Routine Health Checks

Regular monitoring of blood pressure, cholesterol, and blood sugar can help identify cardiovascular risk factors early. Routine visits with your primary care physician can also help determine whether you would benefit from seeing a cardiologist.

Frequently Asked Questions About Cardiologists

What does a cardiologist do?

A cardiologist specializes in the heart and blood vessels and diagnoses and manages conditions such as coronary artery disease, arrhythmias, high blood pressure, heart failure, heart valve disease, and cardiomyopathy.

When should you see a cardiologist?

Consider seeing a cardiologist for unexplained chest discomfort, shortness of breath, frequent palpitations, abnormal heart test results, difficult-to-control blood pressure, or multiple cardiovascular risk factors.

For severe or sudden symptoms, seek emergency medical care.

Can you see a cardiologist without having heart disease?

Yes. Cardiologists can also help assess cardiovascular risk and develop strategies to reduce the likelihood of future heart problems.

Does a cardiologist treat high blood pressure?

Yes. Cardiologists can manage high blood pressure, particularly when it is difficult to control or occurs alongside other cardiovascular conditions.

What tests does a cardiologist perform?

Depending on your situation, testing may include an ECG, echocardiogram, stress test, heart rhythm monitoring, blood tests, or cardiac imaging.

Is chest pain always a sign of a heart attack?

No. Chest pain can have many causes. However, new or unexplained chest pressure or discomfort should be taken seriously. If symptoms are severe or occur with other concerning symptoms, seek emergency medical care.

Can Arizona heat affect your heart?

Yes. Extreme heat can contribute to dehydration, increased heart rate, low blood pressure, heat-related illness, and worsening symptoms in people with certain cardiovascular conditions.

Do you need a referral to see a cardiologist?

It depends on your health insurance plan. Some plans require a referral, while others allow you to schedule an appointment directly.

How often should you see a cardiologist?

It depends on your individual health, symptoms, risk factors, and whether you have an existing cardiovascular condition. Some people may need only an evaluation, while others require regular follow-up.

What should you bring to a cardiology appointment?

Bring your medication list, relevant medical records, previous heart tests or procedures, recent blood pressure readings if available, a list of symptoms, and any questions you have.

Take Your Heart Health Seriously

Your heart supports every part of your body, making cardiovascular health an important part of your overall well-being. You don’t have to wait for a diagnosed heart condition to start paying attention to your cardiovascular risk. Unexplained chest discomfort, shortness of breath, frequent palpitations, dizziness, difficult-to-control blood pressure, or multiple risk factors may be reasons to speak with a healthcare professional.

For Arizona residents, extreme heat adds another consideration. Staying hydrated, recognizing warning signs, managing cardiovascular risk factors, and maintaining regular health checkups can all support better heart health. If you’re concerned about your heart, start by talking with your primary care physician or a qualified cardiologist about the appropriate next step. When it comes to your heart, knowing the warning signs—and acting on them—can make a difference.

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