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Surgical Endoscopy
Published in: Surgical Endoscopy 2/2014

01-02-2014

Clinical markers of the hypercoagulable state by rotational thrombelastometry in obese patients submitted to bariatric surgery

Authors: Pilar Taura, Eva Rivas, Graciela Martinez-Palli, Annabel Blasi, Juan Carlos Holguera, Jaume Balust, Salvadora Delgado, Antonio M. Lacy

Published in: Surgical Endoscopy | Issue 2/2014

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Abstract

Background

Metabolic and inflammatory disturbances associated with obesity are considered important trigger factors for venous thromboembolism (VTE). Identification of clinical markers indicating a hypercoagulability state could define a group of high-risk patients in the surgical setting. This study aimed to identify these markers using rotational thrombelastometry (ROTEM) analysis, an established method for hemostasis testing that can detect hyperfunctional stages of the clotting process.

Methods

From June to December 2010, this study investigated 109 consecutive obese patients (28 women and 22 men, mean age 46 years, body mass index 46.6 ± 7 kg/m2) with no history of VTE who were candidates for bariatric surgery. Preoperative clinical and metabolic characteristics and ROTEM analysis were recorded. Hypercoagulable risk was defined when patients showed a clot strength (G) of ≥11 dynes/cm2.

Results

Of the 109 patients, 20 (18 %) were hypercoagulable according to ROTEM analysis. Metabolic/inflammatory biomarkers such as leptin, C-reactive protein, fibrinogen levels, and platelet count were significantly higher in the high-risk patients. In the multivariate analysis, fibrinogen was an independent predictor of G ≥ 11 dynes/cm2 [odds ratio (OR) 2.92, 95 % confidence interval (CI) 1.80–5.21, p = 0.023]. After adjustment to other data, only waist circumference affected the prediction [OR 4.42, 95 % CI 2.27–6.71, p = 0.009]. Receiver operating characteristic curve analysis showed that 3.95 g/l was the best cutoff point for fibrinogen predictability (sensitivity 100 %, specificity 41 %).

Conclusion

A hypercoagulability state in obese patients is associated with central obesity and high fibrinogen levels, which should be considered clinical hallmarks of this state. More aggressive perioperative prophylaxis for VTE should be recommended when these hallmarks are present in obese patients.
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Metadata
Title
Clinical markers of the hypercoagulable state by rotational thrombelastometry in obese patients submitted to bariatric surgery
Authors
Pilar Taura
Eva Rivas
Graciela Martinez-Palli
Annabel Blasi
Juan Carlos Holguera
Jaume Balust
Salvadora Delgado
Antonio M. Lacy
Publication date
01-02-2014
Publisher
Springer US
Published in
Surgical Endoscopy / Issue 2/2014
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-013-3203-1

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