Relationship between proteinuria and venous thromboembolism.
Nephrotic syndrome is known to cause venous thromboembolism (VTE) due to urine loss of antithrombin III and activation of the coagulation system. We hypothesized that the degree of proteinuria may predict the development of VTE. This was a retrospective case-controlled study of in-patients urban academic teaching hospital from April, 2007 to March, 2009 and who had undergone an imaging study for VTE. All radiology reports (N = 1,647) for CT angiography of chest and Doppler sonogram of extremities were reviewed. The following data were collected: race/ethnicity, degree of proteinuria on urinalysis, serum protein and albumin levels, risk factors for VTE and renal function. The study population consisted of 284 patients with VTE and 280 age/sex matched controls. Relative to those who did not have proteinuria, patients who tested positive for protein had a 3.4-fold increased risk of VTE (odds ratio (OR) 3.4, 95% confidence interval [2.4, 5.0]). The association was unchanged when adjusted for other risk factors. Patients with proteinuria may have an increased risk of venous thromboembolism.
Kato
Shumei
S
Department of Medicine, Beth Israel Medical Center, University Hospital and Manhattan Campus for the Albert Einstein College of Medicine, First Avenue at 16th Street, New York, NY 10003, USA. shkato@chpnet.org
Chernyavsky
Svetlana
S
Tokita
Joji Erik
JE
Shimada
Yuichi J
YJ
Homel
Peter
P
Rosen
Herman
H
Winchester
James F
JF
D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography; D016022:Case-Control Studies; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D011237:Predictive Value of Tests; D011506:Proteins / Q000032:analysis; D011507:Proteinuria / Q000150:complications* / Q000175:diagnosis; D012189:Retrospective Studies; D012306:Risk; D018608:Ultrasonography, Doppler; D054556:Venous Thromboembolism / Q000209:etiology*
D011506:Proteins