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[Role of transesophageal echography in the diagnosis of aortic dissection and in therapy programming]
C Rapezzi1, C Assirelli, P Ortolani
1Istituto di Malattie dell'Apparato Cardiovascolare, Università degli Studi, Bologna.
Insights
Transesophageal echocardiography offers a safe and accurate bedside diagnosis for suspected aortic dissection. This imaging technique provides crucial information for guiding therapeutic decisions in most patients.
Area of Science:
- Cardiovascular Imaging
- Diagnostic Accuracy
- Thoracic Surgery
Background:
- Aortic dissection is a life-threatening condition requiring prompt and accurate diagnosis.
- Traditional diagnostic methods may have limitations in certain clinical scenarios.
- The role of transesophageal echocardiography (TEE) in diagnosing aortic dissection needs clear evaluation.
Purpose of the Study:
- To evaluate the diagnostic accuracy of transesophageal echocardiography (TEE) in patients with suspected aortic dissection.
- To assess the relevance of TEE findings in the clinical decision-making process for aortic dissection management.
- To compare the diagnostic performance of TEE with other established imaging modalities.
Main Methods:
- Prospective evaluation of 80 patients with suspected aortic dissection over 37 months.
- Diagnosis confirmed by aortography, MRI, CT, surgery, or autopsy.
- Detailed analysis of TEE findings including sensitivity, specificity, and identification of dissection type, entry site, thrombi, and associated complications.
Main Results:
- TEE demonstrated high diagnostic accuracy for aortic dissection (97.5% sensitivity, 100% specificity).
- Accurate characterization of dissection type, entry site (85%), and retrograde extension was achieved.
- TEE identified associated findings like aortic regurgitation (25 cases) and pericardial effusion (14 cases), and was superior to aortography in specific cases.
Conclusions:
- Transesophageal echocardiography provides a safe, accurate, and readily available bedside diagnostic tool for aortic dissection.
- TEE findings are sufficient for therapeutic decision-making in the majority of patients.
- TEE enhances diagnostic capabilities compared to aortography for specific dissection subtypes and extensions.
Abstract:
The diagnostic accuracy of transesophageal echocardiography and its relevance on the decision making process were evaluated in 80 patients with suspected aortic dissection during a 37-month period. The diagnosis was proven by aortography and/or magnetic resonance and/or computerized tomography and/or surgery and/or autopsy in each case. Transesophageal echocardiography had no serious complication. A correct diagnosis of aortic dissection was made in 39 of 40 patients (sensitivity, 97.5%; specificity, 100%) and the type of dissection was correctly demonstrated in each case. Thrombi in the false lumen were detected in 16 patients. The primary entry site was correctly identified in 33 patients (85%). Aortic regurgitation was detected in 25 cases (severe in 9) and pericardial effusion in 14 (with tamponade in 2). Transesophageal echocardiography was more accurate than aortography in the diagnosis of noncommunicating intramural dissection (2 cases) and identified more precisely the retrograde extension of the dissection in DeBakey type III patients (4 cases). In 9 cases surgical indication was based on clinical data and transesophageal echocardiography alone. We conclude that transesophageal echocardiography allows a bedside, safe and accurate diagnosis of aortic dissection. In the majority of the patients it provides the minimal diagnostic information necessary to the therapeutical decision making.