Neurocritical Care

, Volume 7, Issue 3, pp 211–216 | Cite as

Critically Ill Cancer Patients are not Consistently Hypercoagulable after Craniotomy

  • Joseph L. Nates
  • Natarajan Aravindan
  • Cheryl Hirsch-Ginsberg
  • Kurt C. Sizer
  • Spencer Kee
  • Anh T. Nguyen
  • Karen Chen
  • Andrew D. Shaw
  • Kristen J. Price
Original Articles

Abstract

Introduction

Recent reports using thrombelastography have suggested that neurosurgical patients develop a hypercoagulable state in the postoperative period. Since venous thromboembolism is a potentially life threatening complication in these patients, we studied a similar population in our institution.

Methods

We conducted a prospective pilot study to evaluate postoperative coagulation changes in critically ill cancer patients after craniotomy. Data collected included demographics, diagnoses, severity of illness, all hematological information (coagulation tests included conventional and TEG), therapies, and complications. Analysis included descriptive statistics, and multivariate regression analysis.

Results

Eleven patients were included in the study. Mean age was 52 ± 17 years, BMI 28 ± 6.5, APACHE II and SOFA scores were 11.18 ± 5.0 and 3.82 ± 1.6 respectively. The Coagulation Index (CI), which is derived from the measured values of R, K, MA, and alpha angle was 1.22 ± 3.5, R 4.2 ± 1.6, K 2.0 ± 2.1, MA 60.78 ± 5.97, and alpha angle 66.88 ± 14.9; while the Thrombodynamic Potential Index (TPI), which is derived from the measured values of K and MA only was 32.48 ± 21. The CI correlated significantly with R, K, alpha angle, MA, TMA, TPI, PMA, E, A30 and A60 but not with the PTT, INR, or SOFA and APACHE II scores. One patient was hypocoagulable by CI and TPI values; in contrast, nine patients were hypercoagulable by TPI but only one by CI. There were no cases of VTE.

Conclusions

Hypercoagulability as defined by the CI was not a common finding in this study. Although the TPI indicated hypercoagulability in a large number of patients, we do not believe it is a good tool to assess the patient’s clotting status or predictor of thrombosis because in contrast to the CI, it does not take into account the enzymatic portions of the clotting cascade. A larger TEG study is warranted to determine the clinical significance of these changes in this and other populations.

Keywords

Thrombelastogram Brain Cancer Coagulation Hypercoagulable Disseminated intravascular coagulation 

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Copyright information

© Humana Press Inc. 2007

Authors and Affiliations

  • Joseph L. Nates
    • 1
  • Natarajan Aravindan
    • 1
  • Cheryl Hirsch-Ginsberg
    • 2
  • Kurt C. Sizer
    • 2
  • Spencer Kee
    • 1
  • Anh T. Nguyen
    • 1
  • Karen Chen
    • 1
  • Andrew D. Shaw
    • 3
  • Kristen J. Price
    • 1
  1. 1.Department of Critical Care Medicine, Division of Anesthesiology and Critical CareThe University of Texas M. D. Anderson Cancer CenterHoustonUSA
  2. 2.Laboratory MedicineThe University of Texas M. D. Anderson Cancer CenterHoustonUSA
  3. 3.Department of AnesthesiologyDuke University Medical CenterDurhamUSA

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