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Ann Thorac Surg 2004;78:862-866
© 2004 The Society of Thoracic Surgeons

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Original article: cardiovascular

Transesophageal echocardiography for detecting extrapulmonary thrombi during pulmonary embolectomy

^a Departments of Anesthesiology, Perioperative and Pain Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts, USA
^b Division of Cardiac Surgery, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts, USA
^c Department of Anesthesiology and Intensive Care Medicine, University Hospital, Tübingen, Germany

Accepted for publication February 17, 2004.

^* Address reprint requests to Dr Eltzschig, Department of Anesthesiology and Intensive Care Medicine, University Hospital, Hoppe-Seyler Str 3, D-72076 Tübingen, Germany
heltzschig{at}partners.org

BACKGROUND: Pulmonary embolectomy is an evolving surgical procedure for the treatment of severe pulmonary embolism. In addition to removing pulmonary thromboemboli, the achievement of optimal results also requires identification and extraction of intrathoracic, extrapulmonary thromboemboli from the right atrium, right ventricle, and the superior or inferior vena cava. Otherwise, these thromboemboli may become the source of recurrent pulmonary embolism. Intraoperative transesophageal echocardiography is frequently used during pulmonary embolectomy as a guide for the surgeon and a monitor of cardiac performance. However, its utility for detecting concurrent intrathoracic, extrapulmonary thromboemboli has not been thoroughly investigated.

METHODS: The study population included 50 consecutive patients undergoing emergent pulmonary embolectomy. Results from preoperative diagnostic studies including transthoracic echocardiography; ventilation/perfusion scan, pulmonary angiography, and computed tomography were reviewed, along with the intraoperative echocardiographic reports for the presence of intrathoracic extrapulmonary thromboemboli. In addition, the surgical operative notes were consulted to determine the impact of intraoperative transesophageal echocardiography on surgical decision making.

RESULTS: Extrapulmonary intrathoracic thromboemboli were identified preoperatively in 8 patients (16%). Intraoperatively, thromboemboli were identified in 5 additional patients by transesophageal echocardiography, adding to a total of 13 patients with extrapulmonary thrombi (26%). Intraoperative transesophageal echocardiography provided the sole source of evidence that directed surgical management in 10% (5 of 50) of all patients undergoing pulmonary emboletcomy.

CONCLUSIONS: Intraoperative transesophageal echocardiography identified intrathoracic, extrapulmonary thomboemboli in 26% of patients undergoing pulmonary embolectomy, resulting in an alteration of surgical management in 10% of patients. These findings support the critical role of intraoperative echocardiography during pulmonary embolectomy.

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Ann. Thorac. Surg. 2004 78: 866. [Extract] [Full Text] [PDF]

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