Transesophageal Echocardiography (TEE): What It Is and When It Is Used

Transesophageal Echocardiography (TEE) is an advanced heart imaging method that provides detailed evaluation of cardiac structures. It is especially useful when standard imaging methods are insufficient.

What Is Transesophageal Echocardiography (TEE)?

Transesophageal Echocardiography (TEE) is an ultrasound technique used to obtain detailed images of the heart. Unlike standard echocardiography, which is performed externally through the chest wall, TEE involves inserting a thin ultrasound probe into the esophagus. Since the esophagus lies very close to the back of the heart, this approach allows for clearer visualization of the heart’s posterior structures. Before the procedure, a local anesthetic spray is applied to numb the throat, and in some cases, the procedure may be performed under sedation or general anesthesia if necessary.

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When Is Transesophageal Echocardiography (TEE) Used?

Standard transthoracic echocardiography (TTE) is typically the first imaging method used to assess the functional and structural condition of the heart. TEE is performed when standard echocardiography does not provide sufficient image quality.

Through TEE, the following areas can be clearly visualized:

• The major artery leaving the heart (aorta)
• The upper chambers of the heart (atria)
• The valves between the upper and lower chambers, including artificial valves
• Small abnormal structures
• Small openings between the upper chambers of the heart

TEE can be used to help diagnose the following conditions:

• Heart valve stenosis or regurgitation
• Aortic aneurysm
• Thrombus (blood clot) formation
• Congenital abnormalities
• Cardiac tumors or masses
• Endocarditis (infection of the heart lining)
• Murmurs and related structural problems
• Bacterial, viral, or fungal infections around the heart valves (pericarditis, endocarditis, etc.)
• Abnormal tissues that may indicate cancer
• Problems associated with artificial heart valves or infections around them

How Is Transesophageal Echocardiography (TEE) Performed?

TEE is carried out in several steps:

• A local anesthetic spray or mild sedation is administered.
• An intravenous (IV) line is inserted, ECG electrodes and an oximeter are attached, and a blood pressure cuff may be applied.
• The patient lies on their left side, and oxygen may be supplied through a nasal cannula if needed.
• After anesthesia takes effect, the ultrasound probe is gently advanced into the esophagus.
• Once in position, imaging begins, and the heart structures are examined.
• After the procedure, the probe is slowly withdrawn, and the patient is monitored until fully awake and stable.

Is Transesophageal Echocardiography (TEE) Risky?

TEE is generally safe, though complications are rare. Possible risks and side effects include:

• Sore throat, discomfort when swallowing, or temporary hoarseness
• Mild bleeding (from the mouth, throat, or esophagus) or dental injury due to pressure
• Heart rhythm disturbances
• Breathing difficulties (e.g., bronchospasm)
• Allergic reactions
• Esophageal injury

Does Transesophageal Echocardiography (TEE) Require Anesthesia or Sedation?

General anesthesia is not typically required for TEE. Most patients undergo the procedure under local anesthesia or mild to moderate sedation. If the patient feels excessive discomfort, sedatives can be administered intravenously. General anesthesia is used only in rare cases.

How to Prepare for Transesophageal Echocardiography (TEE)

Preparation for TEE generally includes fasting for 6 to 8 hours before the procedure.

• Fasting: Avoid solid foods for 6–8 hours and liquids for at least 2 hours before the test.
• Medications: Discuss with your doctor the use of blood thinners, diabetes medications, anxiety, or sleep medications.
• Dental issues: Inform your doctor about gum disease, loose teeth, or dental implants.
• Blood disorders: Report any bleeding or clotting problems.
• Medical history: Mention any stomach, esophageal, or swallowing disorders.
• Consent: You will be asked to sign an informed consent form acknowledging understanding of the procedure and its risks.

What to Expect After Transesophageal Echocardiography (TEE)

Patients should avoid eating, drinking, or driving immediately after the procedure.

• Eating and drinking: Wait about one hour until the gag reflex returns before consuming food or drink.
• Driving: Avoid driving for 24 hours if sedation or anesthesia was used.
• Bleeding: Rarely, blood may appear in saliva; this requires medical attention.
• Throat discomfort: Mild soreness may last 1–2 days; report if it persists.
• Fever or breathing problems: Contact your doctor if these symptoms occur.
• Medication use: Resume medications only under doctor’s advice.

Frequently Asked Questions about TEE

What Is a TEE Holder?

“TEE holder” is not a medical term. The TEE procedure uses a flexible ultrasound probe, usually manually controlled by the physician. Occasionally, a mechanical probe holder may be used to stabilize the probe, but this is not standard practice.

How Long Does a TEE Take?

TEE usually takes 30 to 60 minutes. Including preparation, sedation, and recovery, the total duration may be around 2 hours.

Can You Eat After TEE?

Eating is not recommended for at least one hour after TEE. If sedation effects persist, wait longer, as anesthesia spray temporarily reduces the swallowing reflex.

Does TEE Cause a Sore Throat?

Yes. Mild throat pain, burning, or swallowing difficulty is common after TEE. These symptoms usually disappear within 1–2 days. Persistent or severe pain should be evaluated by a doctor.

Is TEE the Same as a Heart Ultrasound?

TEE and heart ultrasound (echocardiography) are based on the same principle — using sound waves to visualize the heart. However, they differ in application:

• Transthoracic echocardiography (TTE): Performed externally via the chest wall.
• Transesophageal echocardiography (TEE): Performed through the esophagus, providing clearer images of the heart’s posterior structures.

What Does “Viewing the Heart Through the Esophagus” Mean?

This refers to the TEE procedure, in which a flexible probe is passed through the esophagus to obtain detailed images of the back side of the heart. Because the esophagus lies directly behind the heart, this method avoids interference from bones, muscles, and lungs, producing clearer images.

When Will the TEE Report Be Ready?

TEE reports are usually prepared on the same day or within 1–2 business days, depending on the hospital’s workflow and the doctor’s availability. More complex evaluations may take longer.

What Is the Difference Between Echocardiography and Transesophageal Echocardiography?

Both are echocardiographic imaging techniques that use ultrasound waves to examine the heart.

Standard transthoracic echocardiography (TTE) is performed externally by moving a probe over the chest.

Transesophageal echocardiography (TEE) uses a thin probe inserted into the esophagus, allowing more detailed and clearer images, especially of the heart’s posterior regions.