Chapter 7: The Echocardiogram Procedure – Step by Step

For many patients, an echocardiogram is their first experience with a heart imaging test. Although the procedure is simple and generally painless, it is natural to feel curious or even anxious about what will happen. Knowing each step of the process can reduce stress and help patients feel more relaxed and confident.

An echocardiogram is performed by a specially trained healthcare professional called a cardiac sonographer or echocardiography technician. The images obtained during the examination are later interpreted by a cardiologist, a physician specializing in heart diseases.

This chapter provides a detailed, step-by-step explanation of what happens during different types of echocardiograms, from arrival at the hospital or clinic to receiving the results.

Arrival at the Hospital or Clinic

Patients are usually asked to arrive 15 to 30 minutes before their scheduled appointment.

Upon arrival, they will:

• Register at the reception desk.
• Confirm personal and insurance information (where applicable).
• Complete medical forms if needed.
• Provide a list of current medications.
• Inform staff about allergies or recent illnesses.

If previous heart imaging studies are available, they may be reviewed for comparison.

Meeting the Healthcare Team

Before the examination begins, patients usually meet one or more healthcare professionals, including:

• Cardiac sonographer
• Nurse
• Cardiologist (in some cases)

The healthcare team will explain:

• Why the test is being performed.
• What the procedure involves.
• How long it will take.
• Whether any special instructions apply.

Patients are encouraged to ask questions before the examination begins.

Changing into a Hospital Gown

For most echocardiograms, clothing from the waist up must be removed.

Patients are given a hospital gown that opens at the front, allowing easy access to the chest while maintaining privacy.

Jewelry, necklaces, and large accessories should be removed to avoid interference with the ultrasound probe.

Positioning on the Examination Table

Most transthoracic echocardiograms are performed with the patient lying on their left side.

This position brings the heart closer to the chest wall, improving image quality.

The examination table may be slightly tilted to provide the best viewing angle.

Patients are encouraged to relax and breathe normally unless instructed otherwise.

Attaching Electrocardiogram (ECG) Electrodes

Small adhesive electrodes are placed on the patient’s chest.

These electrodes connect to an electrocardiogram (ECG) monitor that records:

• Heart rate
• Heart rhythm
• Timing of each heartbeat

The ECG is synchronized with the ultrasound images, allowing the cardiologist to analyze heart motion during each phase of the cardiac cycle.

Applying Ultrasound Gel

The sonographer applies a clear, water-based gel to the chest.

The gel serves several purposes:

• Eliminates air between the skin and the transducer.
• Improves transmission of ultrasound waves.
• Enhances image quality.
• Allows the transducer to glide smoothly over the skin.

The gel may feel cool initially but is harmless and easily wiped away after the examination.

Using the Transducer

The sonographer places the handheld transducer against various areas of the chest.

Gentle pressure is applied to obtain the best images.

The probe may be moved to several positions, including:

• Left side of the breastbone
• Heart apex
• Below the ribs
• Upper chest near the collarbone

Each position provides a different view of the heart.

Obtaining Standard Views

During the examination, images are obtained from several standard windows.

These commonly include:

Parasternal Long-Axis View

This view evaluates:

• Left ventricle
• Left atrium
• Aortic valve
• Mitral valve

Parasternal Short-Axis View

This provides cross-sectional images of:

• Ventricles
• Papillary muscles
• Aortic valve
• Pulmonary valve

Apical Four-Chamber View

This view simultaneously shows:

• Right atrium
• Left atrium
• Right ventricle
• Left ventricle

It is one of the most important views for assessing overall heart function.

Apical Two-Chamber View

This focuses on:

• Left atrium
• Left ventricle

It is useful for evaluating heart muscle movement.

Subcostal View

Obtained below the rib cage, this view is especially valuable for:

• Detecting fluid around the heart.
• Examining congenital heart defects.
• Assessing critically ill patients.

Suprasternal View

This view examines:

• Aortic arch
• Major arteries

It is often used when aortic disease is suspected.

Recording Measurements

Throughout the examination, the ultrasound system automatically records numerous measurements, including:

• Chamber dimensions
• Wall thickness
• Valve movement
• Blood flow velocities
• Ejection fraction
• Pressure gradients

These measurements help the cardiologist evaluate heart function objectively.

Doppler Examination

The sonographer performs Doppler imaging to evaluate blood flow.

This includes:

• Color Doppler
• Pulsed Wave Doppler
• Continuous Wave Doppler

These techniques help determine:

• Valve narrowing
• Valve leakage
• Blood flow direction
• Blood flow speed
• Pressure differences within the heart

The colorful images seen on the monitor represent moving blood rather than the heart itself.

Breathing Instructions

At certain points, the sonographer may ask the patient to:

• Hold their breath briefly.
• Take a deep breath.
• Breathe normally.

These instructions reduce motion and improve image quality.

Patients should remain as relaxed as possible throughout the examination.

Remaining Still

Movement can blur ultrasound images.

Patients are encouraged to:

• Stay still.
• Avoid talking unless necessary.
• Relax the chest muscles.

If discomfort develops from lying in one position, patients should inform the sonographer.

Duration of the Examination

A routine transthoracic echocardiogram generally takes 40 to 60 minutes.

However, the exact time depends on:

• Patient anatomy
• Image quality
• Complexity of heart disease
• Need for additional measurements

Some examinations may be completed more quickly, while others require additional imaging.

What the Patient Sees

Patients often notice moving images on the ultrasound monitor.

They may recognize:

• Beating heart chambers
• Opening and closing valves
• Colorful blood flow patterns

Although fascinating, these images require specialized training to interpret correctly.

The sonographer usually focuses on obtaining high-quality images rather than explaining the findings during the examination.

Communication During the Test

The sonographer may ask simple questions such as:

• Are you comfortable?
• Can you hold your breath?
• Do you have chest pain?
• Are you feeling dizzy?

Patients should immediately report:

• Chest discomfort
• Shortness of breath
• Dizziness
• Palpitations
• Any unusual symptoms

Patient safety remains the highest priority.

Completing the Examination

Once all necessary images have been obtained:

• The ultrasound gel is wiped from the chest.
• ECG electrodes are removed.
• The patient changes back into their clothing.

For routine transthoracic echocardiograms, patients can usually return to normal activities immediately.

Special Steps During a TEE

A transesophageal echocardiogram involves additional steps.

Patients receive:

• Throat numbing spray
• Sedative medication
• Continuous monitoring of oxygen level, heart rate, and blood pressure

The ultrasound probe is carefully guided into the esophagus.

Afterward, patients remain under observation until the sedation wears off.

Because sedation affects alertness, driving is not permitted for the rest of the day.

Special Steps During Stress Echocardiography

Stress echocardiography begins with resting images.

Patients then either:

• Walk on a treadmill.
• Ride a stationary bicycle.
• Receive dobutamine through an IV.

Immediately afterward, additional images are obtained while the heart is still beating rapidly.

The healthcare team continuously monitors:

• ECG
• Blood pressure
• Heart rhythm
• Symptoms

The test stops if concerning symptoms or significant ECG changes develop.

After the Procedure

Following most echocardiograms, patients may:

• Eat normally.
• Resume medications.
• Return to work.
• Drive home (unless sedated).
• Continue normal daily activities.

Patients who received sedation should:

• Rest for the remainder of the day.
• Avoid alcohol.
• Avoid signing important documents.
• Have a responsible adult accompany them home.

How Images Are Reviewed

After the examination, the images are carefully analyzed by a cardiologist.

The cardiologist evaluates:

• Heart chamber size
• Pumping ability
• Valve function
• Blood flow
• Wall motion
• Congenital abnormalities
• Presence of fluid or clots

The findings are compiled into a detailed report.

Receiving the Results

Results may be available:

• Immediately in emergency situations.
• Within a few hours.
• Within several days for routine examinations.

The healthcare provider explains:

• Whether the heart appears normal.
• Any abnormalities detected.
• Recommended treatments.
• Need for additional testing.
• Follow-up appointments.

Patients should avoid interpreting raw measurements on their own without medical guidance, as many values require clinical context.

Tips for a Comfortable Experience

Patients can improve their experience by:

• Wearing comfortable clothing.
• Following preparation instructions.
• Arriving early.
• Asking questions.
• Remaining relaxed.
• Informing staff of any discomfort.

A calm, cooperative patient helps the sonographer obtain clearer images and complete the examination efficiently.

Common Questions Patients Ask

Will the echocardiogram hurt?

A transthoracic echocardiogram is painless. Some mild pressure from the transducer may be felt, but it is generally well tolerated.

Can I talk during the test?

Yes, but the sonographer may ask you to remain quiet during certain parts of the examination to improve image quality.

Will I hear my heartbeat?

During Doppler imaging, the machine may produce sounds representing blood flow through the heart. This is normal.

Can I return to work afterward?

Most patients can return to normal activities immediately after a routine transthoracic echocardiogram. Patients who have received sedation should rest and avoid driving until fully recovered.

Chapter Summary

An echocardiogram is a safe, straightforward, and generally painless procedure that provides valuable information about the heart’s structure and function. From registration and preparation to image acquisition and interpretation, each step is carefully designed to ensure patient comfort and diagnostic accuracy. During a routine transthoracic echocardiogram, the sonographer captures multiple views of the heart using ultrasound while monitoring heart rhythm with an ECG. Specialized procedures such as transesophageal and stress echocardiography involve additional steps but follow the same goal: obtaining detailed information to diagnose and manage heart disease. Understanding the process helps patients approach the examination with confidence and reduces unnecessary anxiety.

In the next chapter, we will learn how echocardiogram results are interpreted, including normal findings, common measurements such as ejection fraction, and the meaning of abnormal results in various heart conditions.