Risk factors of portal vein thrombosis in Crohn's disease patients.
ABSTRACT Patients with inflammatory bowel disease, such as Crohn's disease (CD), suffer from a threefold increase in the risk of venous thromboembolism. Small bowel, segmental bowel, or ileocolonic resection to treat Crohn's disease can lead to rare complications of portal vein thrombosis (PVT), which can lead to further poor health outcomes, such as small bowel ischemia. The study attempts to find different risk factors that may be associated with postoperative complications of PVT in Crohn's disease patients.
In a 1 to 3 case-control study following Institutional Review Board approval, 13 Crohn's disease patients with documented radiological postoperative diagnosis of PVT from 2004 to 2011 and 39 CD patients who did not have postoperative PVT were matched by retrospective chart review for patient demographics, preoperative course and workup, anticoagulant use, and operative procedure. Univariate analysis was performed to draw correlations on risk factors for the development of PVT.
In the 13 CD patients with PVT, concurrent cancer, liver disease, and dyslipidemia were present in 23.1%, 23.1%, and 15.4% of the population, respectively. Compared to the 39 CD only patients, concurrent cancer, liver disease, and dyslipidemia were present in only 2.6%, 2.6%, and 0% of the population, respectively. Of the CD patients with PVT, 61.5% were on preoperative steroids compared to 28.9% of the CD only patients. PVT development in CD patients is correlated with concurrent cancer (p = 0.016), liver disease (p = 0.016), dyslipidemia (p = 0.012), and preoperative steroid usage (p = 0.036).
Concurrent cancer, liver disease, dyslipidemia, and preoperative steroid usage were risk factors associated with the development of PVT in Crohn's patients. Since there is limited literature on PVT in CD, more data needs to be collected, and additional studies should be done to further assess the prevention, diagnosis, and management of the disease.
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ABSTRACT: Object Venous thromboembolisms (VTEs) occur frequently in surgical patients and can manifest as pulmonary emboli (PEs) or deep venous thromboses (DVTs). While many medical therapies have been shown to prevent VTEs, neurosurgeons are concerned about the use of anticoagulants in the postoperative setting. To better understand the prevalence of and the patient-level risk factors for VTE, the authors analyzed data from the National Surgical Quality Improvement Program (NSQIP). Methods Retrospective data on 1,777,035 patients for the years from 2006 to 2011 were acquired from the American College of Surgeons NSQIP database. Neurosurgical cases were extracted by querying the data for which the surgical specialty was listed as "neurological surgery." Univariate statistics were calculated using the chi-square test, with 95% confidence intervals used for the resultant risk ratios. Multivariate models were constructed using binary logistic regression with a maximum number of 20 iterations. Results Venous thromboembolisms were found in 1.7% of neurosurgical patients, with DVTs roughly twice as common as PEs (1.3% vs 0.6%, respectively). Significant independent predictors included ventilator dependence, immobility (that is, quadriparesis, hemiparesis, or paraparesis), chronic steroid use, and sepsis. The risk of VTE was significantly higher in patients who had undergone cranial procedures (3.4%) than in those who had undergone spinal procedures (1.1%). Conclusions Venous thromboembolism is a common complication in neurosurgical patients, and the frequency has not changed appreciably over the past several years. Many factors were identified as independently predictive of VTEs in this population: ventilator dependence, immobility, and malignancy. Less anticipated predictors included chronic steroid use and sepsis. Venous thromboembolisms appear significantly more likely to occur in patients undergoing cranial procedures than in those undergoing spinal procedures. A better appreciation of the prevalence of and the risk factors for VTEs in neurosurgical patients will allow targeting of interventions and a better understanding of which patients are most at risk.Journal of neurosurgery. 08/2014;