• Takashi Ando, Hiroyuki Abe, Tokuichiro Nagata, Yuka Sakurai, Masahide Chikada, Toshiya Kobayashi, and Haruo Makuuchi.
• Department of Cardiovascular Surgery, St. Marianna University School of Medicine, Sugao-ku, Kawasaki, Kanagawa, Japan.
• Gen Thorac Cardiovasc Surg. 2011 Oct 1; 59 (10): 705-8.

AbstractAcute pulmonary embolism (APE) is a serious disease. Recently, multidetector-row computed tomography (MDCT) has proven to be valuable in detecting APE and deep vein thrombosis. APE is classified as massive, submassive, and nonmassive. The incidence of submassive APE and the number of therapeutic approaches for clinically diagnosed critical submassive APE have both increased. However, most strategies for submassive APE have been conservative, e.g., transvenous catheter pulmonary embolectomy, and there are few reports on surgical pulmonary embolectomy. We examined the surgical outcomes in four cases of submassive APE with a floating thrombus in the right atrium (RA) from August 2003 to July 2008. All patients appeared to have no neurological complications and showed an event-free survival of up to 65 months (37 ± 25 months). Surgical pulmonary embolectomy was effective for submassive APE with a floating thrombus in the RA.

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