Obesity is Not Associated with an Increased Risk of Portal Vein Thrombosis in Cirrhotics

Alan Zakko, Paul Thomas Kroner, Rooma Nankani, Raffi Karagozian

Abstract


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Aim: To determine the impact of obesity on development of portal vein thrombosis in cirrhotic patients.
Background: Cirrhosis is a known risk factor for portal vein thrombosis (PVT). Evidence also points to obesity as being a risk factor
for venous thromboembolism. Limited information is available on how obesity impacts the development of PVT in cirrhotic patients.
Methods: This was a retrospective cohort study using the 2013 National Inpatient Sample. Patients older than 18 years with an ICD-9
CM code for any diagnosis of liver cirrhosis were included. There was no exclusion criteria. The primary outcome was the impact of
obesity on development of PVT. Obesity was also sub-classified according to body-mass index (BMI). Secondary outcomes were inhospital
mortality, ICU admission, shock, TPN use, and resource utilization. Odds ratios (OR) and means were adjusted for age, gender,
and ethnicity.
Results: We included 69,934 obese cirrhotics of which, 1,125 developed PVT (mean age 59 years, 35% female). Overall in-hospital
mortality rates were 9% (11% with PVT vs 5% without PVT). On multivariate analysis, obesity was not associated with a significantly
different adjusted OR for development of PVT compared to non-obese. When stratifying by obesity subtype, class 1 obesity was
associated with increased odds of PVT (OR: 1.45, 95%CI: 1.06-1.96, p=0.02), while class 3 obesity was associated with a decreased
odds of PVT (OR: 0.72, 95%CI: 0.58-0.88, p<0.01) compared to non-obese.
Conclusion: Obesity is not associated with increased odds of PVT.
Keywords: Obesity, Portal vein thrombosis, Cirrhosis, ICD-9.
(Please cite as: Zakko A, Kroner PT, Nankani R, Karagozian R. Obesity is not associated with an increased risk of
portal vein thrombosis in cirrhotic patients. Gastroenterol Hepatol Bed Bench 2018;11(2):153-158).


Keywords


Obesity; Portal Vein Thrombosis, Cirrhosis, ICD-9

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DOI: http://dx.doi.org/10.22037/ghfbb.v0i0.1234

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