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Home Books Clinical Manual and Review of Transesophageal Echocardiography, 2e

Chapter 5. Transesophageal Tomographic Views

Ryan Lauer; Joseph P. Mathew

Transesophageal echocardiography (TEE) training and certification have become standardized with the use of recognized nomenclature and tomographic views. A consistent nomenclature has the advantage of not only facilitating communication between physicians but also promoting the performance of comprehensive examinations. Familiarity with standard views enables the echocardiographer to spot abnormalities more easily and compare sequential images. However, in some patients, it will not be possible to obtain a complete set of perfect two-dimensional views because of time constraints, or because the patient's body habitus or anatomy impedes the ability to develop the appropriate imaging planes. With practice, a complete TEE examination generally can be performed in 10 minutes or less, with images recorded on videotape or, preferably, in a digital format. A written report should then be generated as part of the patient's medical record (see Chapter 25). Recommendations presented in this chapter primarily pertain to the widely available TEE equipment, which permits multiplane two-dimensional imaging. As experience with the newly available real-time three-dimensional (3D) TEE grows, standardized recommendations are sure to follow.

Guidelines for a comprehensive TEE examination have been established jointly by the American Society of Echocardiography and the Society of Cardiovascular Anesthesiologists.1 The indications for performing a TEE examination continue to evolve on the basis of evidence attesting to its value and the weight of expert opinion and are listed in Table 5–1.2

Table 5–1. Recommendations for the Use of TEE in the Perioperative Period.
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Table 5–1. Recommendations for the Use of TEE in the Perioperative Period.

I. Cardiac and Thoracic Aortic Procedures

• Cardiac and Thoracic Aortic Surgery
• For adult patients without contraindications, TEE should be used in all open heart (eg, valvular procedures) and thoracic aortic surgical procedures, and should be considered in CABG surgeries as well to
• Confirm and refine the preoperative diagnosis
• Detect new or unsuspected pathology
• Adjust the anesthetic and surgical plan accordingly
• Assess results of the surgical intervention
• In small children, the use of TEE should be considered on a case-by-case basis because of risks unique to these patients (eg, bronchial obstruction)
• Catheter-Based Intracardiac Procedures
• For patients undergoing transcatheter intracardiac procedures, TEE may be used

II. Noncardiac Surgery

  • • TEE may be used when the nature of the planned surgery or the patient's known or suspected cardiovascular pathology might result in severe hemodynamic, pulmonary, or neurologic compromise
  • • If equipment and expertise are available, TEE should be used when unexplained life-threatening circulatory instability persists despite corrective therapy

III. Critical Care

  • • For critical care patients, TEE should be used when diagnostic information that is expected to alter management cannot be obtained by TTE or other modalities in a timely manner

Abbreviations:TEE, transesophageal echocardiography;TTE, transthoracic echocardiography; CABG, coronary artery bypass graft.

Source: Practice Guidelines for Perioperative Transesophageal Echocardiography. An Updated Report by the American Society of Anesthesiologists and the Society of ...

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