Do Sequential Compression Devices Really Reduce the Risk of Venous Thromboembolism in Plastic Surgery Patients?

Rectus Plication Does Not Increase Risk of Thromboembolic Events Following Abdominal Body Contouring: A Matched Case-Control Analysis

BACKGROUND

Rectus abdominis plication increases intra-abdominal pressure and lower-extremity venous stasis, which may increase the incidence of venous thromboembolism (VTE) events.

OBJECTIVES

The aim of this study was to investigate the potential association between VTE and rectus abdominis muscle plication during surgery.

METHODS

A retrospective review of all patients who underwent abdominal body contouring at the authors' institution between 2010 and 2020 was completed. Cases were those with postoperative VTEs and were matched to controls (1:4) via potential confounders. Variables collected include demographic data, operative details, comorbidities, and postoperative complications. Statistical analysis was performed with parametric, nonparametric, and multivariable regression modeling.

RESULTS

Overall, 1198 patients were included; 19 (1.59%) experienced a postoperative VTE and were matched to 76 controls. The overall cohort was 92.7% female with an average age of 44 years, an average Charlson Comorbidity Index of 1 point, and an average BMI of 30.1 kg/m2. History of cerebrovascular events (14.5% vs 36.8%, P = 0.026) differed significantly between cohorts, but no significant associations were noted in all other baseline demographics. Additionally, VTE cases were more likely to have received intraoperative blood transfusions (odds ratio = 8.4, P = 0.04). Bivariate analysis demonstrated cases were significantly more likely to experience concurrent complications, including delayed wound healing (0% vs 5.3%, P = 0.044), seroma formation (5.3% vs 21.1%, P = 0.027), and fat necrosis (0% vs 5.3%, P = 0.044). However, these findings were not significant in a multivariable regression model. Plication was not associated with VTE outcomes.

CONCLUSIONS

Rectus plication does not increase the risk of VTE. However, the odds of VTE are significantly increased in patients who received intraoperative blood products compared with those who did not.

LEVEL OF EVIDENCE: 3

Mechanical Thromboprophylaxis Alone in Body Contouring Surgery for Post Massive Weight Loss Patients: Is this Good Enough?

BACKGROUND

Although the use of pharmacological thromboprophylaxis effectively reduces Deep vein thrombosis (DVT) incidence after body contouring surgery, this might increase the risk of bleeding and hematoma formation. In this scenario, the use of mechanical prophylaxis alone could be an attractive alternative. We aimed to evaluate the incidence of DVT in patients with massive weight loss undergoing body contouring surgeries in whom mechanical prophylaxis alone was indicated.

METHODS

This retrospective cohort study included all patients who underwent body contouring surgery after massive weight loss between 09/01/16-12/31/19 and received solely mechanical prophylaxis of VTD. Data collected included smoking habit, body mass index, history of cancer, use of contraceptives, magnitude of weight loss, Caprini scale, American society of anesthesiology physical status (ASA-PS) classification, and type and length of procedures. An analysis of DVT events during the postoperative period up to 90 days was undertaken.

RESULTS

Sixty-four patients, in whom 82 BCS were performed, were included in this study. Most of them (89.1%) were female with a mean age of 47 ± 12 years. Mechanical prophylaxis methods used were elastic compression stockings, intermittent pneumatic compression boots, and early deambulation. In all cases, the average length of hospital stay was 26.3 ± 9.6 hours. Surgical times were less than 155,7 minutes in all procedures. Global incidence of DVT was 1.2% in a patient receiving mechanical prophylaxis alone. There were no bleeding complications or pulmonary embolism episodes.

CONCLUSIONS

In this series, DVT incidence in patients with mechanical prophylaxis alone was deemed acceptable if compared to the incidence reported in the literature. Individualization of the risk of thrombosis and bleeding in this group of patients is of paramount importance to reduce complications.

LEVEL OF EVIDENCE IV

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

The Effect of Sequential Compression Devices on Fibrinolysis in Plastic Surgery Outpatients: A Randomized Trial

BACKGROUND

Sequential compression devices are often considered a mainstay of prophylaxis against deep venous thromboses in surgical patients. The devices are believed to produce a milking action on the deep veins to prevent venous stasis. A systemic fibrinolytic effect has also been proposed, adding a second mechanism of action. The plasma levels of tissue plasminogen activator and plasminogen activator inhibitor-1 reflect fibrinolytic activity.

METHODS

A randomized trial was conducted among 50 consecutive plastic surgery outpatients undergoing cosmetic surgery performed by the author under total intravenous anesthesia and without paralysis. Patients were randomized to receive calf-length sequential compression devices or no sequential compression devices during surgery. Blood samples were obtained from the upper extremity preoperatively and at hourly intervals until the patient was discharged from the postanesthesia care unit. Tissue plasminogen activator and plasminogen activator inhibitor-1 levels were measured. Ultrasound surveillance was used in all patients. There was no outside funding for the study.

RESULTS

All patients agreed to participate (inclusion rate, 100 percent). No patient developed clinical signs or ultrasound evidence of a deep venous thrombosis. There were no significant changes in tissue plasminogen activator levels or plasminogen activator inhibitor-1 levels from the preoperative measurements at any hourly interval and no differences in levels comparing patients treated with or without sequential compression devices.

CONCLUSIONS

No significant change in systemic fibrinolytic activity occurs during outpatient plastic surgery under total intravenous anesthesia. Sequential compression devices do not affect tissue plasminogen activator or plasminogen activator inhibitor-1 levels, suggesting no fibrinolytic benefit.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, I.