BACKGROUND: Although it is widely assumed that dehydration predisposes to venous thromboembolism (VTE), there are no clinical studies to support this. AIM: To evaluate the relationship between biochemical indices of dehydration and VTE after acute ischaemic stroke (AIS). DESIGN: Prospective observational study. METHODS: Unselected AIS patients (n = 102) receiving standard thromboprophylaxis with aspirin and graded compression stockings, underwent serial measurements of serum urea, creatinine and osmolality, and were screened for VTE using magnetic resonance direct thrombus imaging. RESULTS: Serum osmolality of >297 mOsm/kg, urea >7.5 mmol/l and urea:creatinine ratio (mmol:mmol) >80 a few days post-AIS were associated with odds ratios for VTE of, respectively, 4.7, 2.8 and 3.4 (p = 0.02, 0.05, 0.02) on multivariable analysis. DISCUSSION: Dehydration after AIS is strongly independently associated with VTE, reinforcing the importance of maintaining adequate hydration in these patients.
BACKGROUND: Although it is widely assumed that dehydration predisposes to venous thromboembolism (VTE), there are no clinical studies to support this. AIM: To evaluate the relationship between biochemical indices of dehydration and VTE after acute ischaemic stroke (AIS). DESIGN: Prospective observational study. METHODS: Unselected AIS patients (n = 102) receiving standard thromboprophylaxis with aspirin and graded compression stockings, underwent serial measurements of serum urea, creatinine and osmolality, and were screened for VTE using magnetic resonance direct thrombus imaging. RESULTS: Serum osmolality of >297 mOsm/kg, urea >7.5 mmol/l and urea:creatinine ratio (mmol:mmol) >80 a few days post-AIS were associated with odds ratios for VTE of, respectively, 4.7, 2.8 and 3.4 (p = 0.02, 0.05, 0.02) on multivariable analysis. DISCUSSION: Dehydration after AIS is strongly independently associated with VTE, reinforcing the importance of maintaining adequate hydration in these patients.
Authors: Gustavo J Rodriguez; Steve M Cordina; Gabriela Vazquez; M Fareed K Suri; Jawad F Kirmani; Mustapha A Ezzeddine; Adnan I Qureshi Journal: Neurocrit Care Date: 2008-12-03 Impact factor: 3.210
Authors: John A Heit; Cynthia L Leibson; Aneel A Ashrani; Tanya M Petterson; Kent R Bailey; L Joseph Melton Journal: Arterioscler Thromb Vasc Biol Date: 2009-06-18 Impact factor: 8.311