The Efficacy of Enoxaparin for the Prevention of a Pulmonary Thromboembolism in a Skin-sparing Mastectomy with Immediate Reconstruction in Breast Cancer / 한국유방암학회지

PURPOSE: Performance of a skin-sparing mastectomy with immediate reconstruction provides psychological satisfaction and good cosmetic outcome for patients with breast cancer. However, this is a lengthy procedure to perform, and there is increased risk of pulmonary thromboembolism (PTE). The purpose of this study was to evaluate the efficiency of the use of low molecular weight heparins (enoxaparin) for prophylaxis against a pulmomary thromboembolism followed by mastectomy with an immediate transverse rectus abdominis myocutaneous flap (TRAM) in breast cancer. METHODS: A total of 123 patients underwent a skin-sparing mastectomy with an immediate TRAM. The "non-enoxaparin group" wore compression stockings for PTE prophylaxis and the "enoxaparin group" received enoxaparin (40 mg SC injection, once daily starting 2 hr before surgery and continuing for 6 days postoperatively) in conjunction with the use of compression stockings. Lung perfusion, inhalation scans, and serum D-dimer assays were performed on postoperative day 3. If findings were clinically suspicious or intermediate to high probability of a PTE in a lungs scan, embolism computed tomography was performed. Patients were prospectively investigated according to the clinicopathological data. We compared the incidence of PTE and hemorrhagic complications between the two groups. RESULTS: There were no significant clinicopathological differences between the two groups. Eleven patients developed a PTE (nine patients in the non-enoxaparin group and two patients in the enoxaparin group). The prevalence rate of a PTE was 17.3% and 3.2% for each group, respectively (p=0.01). One patient in the non-enoxaparin group required a second operation for bleeding control and three patients in the enoxaparin group needed transfusions. There were minor hemorrhagic complications in the enoxaparin group that improved after supportive management. CONCLUSION: Although there were minor hemorrhagic complications, enoxaparin is safe and effective in a preventing PTE in patients that undergo immediate reconstruction after a skin-sparing mastectomy.

Pulmonary Thromboembolism following Mastectomy with Immediate TRAM in the Patients with Breast Cancer : a Prospective Study / 한국유방암학회지

PURPOSE: : Skin-sparing mastectomy with immediate reconstruction provides psychological satisfaction and a good cosmetic effect for patients with breast cancer. However, this procedure takes longer operation time than mastectomy, and the risk of pulmonary thromboembolism (PTE) and deep vein thrombosis may be increased. The purpose of this study was to evaluate the incidence of PTE. METHODS: Between January and May in 2005, 54 breast cancer patients who underwent skin-sparing mastectomy with immediate transverse rectus abdominalis myocutaneous flap (TRAM) at Asan Medical Center were prospectively investigated according to the clinicopathologic data. Patients were placed in compression stockings on the day of operation, and lung perfusion, inhalation scans,and serum D-dimer assays were performed on the first three postoperative days. If findings were suspicious, we performed embolism computed tomography. We compared patient age, body mass index (BMI), clinical risk factors, operative findings, pathologic results, and the clinical course between PTE patients and non-PTE patients. RESULTS: There were 9 cases of intermediate probability and 6 cases of high probability for PTE according to lung perfusion and inhalation scans, and they underwent embolism CT. Eleven patients (20.4%) were diagnosed with embolism CT or with lung perfusion and inhalation scans;2 patients were symptomatic and 9 patients were asymptomatic. There was significant difference between PTE and non-PTE patients for age, but none for BMI, clinical risk factors, operation time, serum D-dimer, or stage. CONCLUSION: The incidence of PTE after mastectomy with immediate TRAM is relatively high, and a strategy for the prevention and treatment of PTE is required. Although age is a risk factor for PTE on this study, future studies are needed to determine the risk factors for and to confirm proper treatment and prevention of PTE.