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compression stockings for prevention DVT

Date:10/04/2014 20:00:45
From: Cochrane Database Syst Rev. 2010 Jul 7;7:CD001484.
 
Elastic compression stockings for prevention of deep vein thrombosis.
 
Newcastle Medical School, University of Newcastle upon Tyne, Newcastle upon Tyne, Tyne & Wear, UK, NE1 7RU.
Abstract
BACKGROUND:
One of the settings where deep vein thrombosis (DVT) in the lower limb and pelvic veins occurs is in hospital with prolonged immobilisation of patients for various surgical and medical illnesses. Using graduated compression stockings (GCS) in these patients has been proposed to decrease the risk of DVT. This is an update of a Cochrane review first published in 2000 and updated in 2003.
OBJECTIVES:
To determine the magnitude of effectiveness of GCS in preventing DVT in various groups of hospitalised patients.
SEARCH STRATEGY:
For this update the Cochrane Peripheral Vascular Diseases Group searched their Specialised Register and the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2009, Issue 4) for randomised controlled trials of elastic or graduated compression stockings for prevention of DVT.
SELECTION CRITERIA:
Randomised controlled trials (RCTs) involving GCS alone; or GCS used on a background of any other DVT prophylactic method.
DATA COLLECTION AND ANALYSIS:
One author extracted the data, assessed the quality of trials and analysed the results; which were cross-checked and authenticated by a second author.
MAIN RESULTS:
Eighteen RCTs were identified. GCS were applied on the day before surgery or on the day of surgery and were worn up until discharge or until the patients were fully mobile. In the majority of the included studies DVT was identified by the radioactive I(125) uptake test.For GCS alone, eight RCTs were identified involving 1279 analytic units (887 patients). In the treatment group (GCS), of 662 units, 86 developed DVT (13%) in comparison to the control group (without GCS) of 617 units where 161 (26%) developed DVT. The Peto's odds ratio (OR) was 0.35 (95% confidence interval (CI) 0.26 to 0.47) with an overall effect favouring treatment with GCS (P < 0.00001). For GCS on a background of another prophylactic method, 10 RCTs were identified involving 1248 analytic units (576 patients). In the treatment group (GCS plus another method), of 621 units, 26 (4%) developed DVT, in the control group (the other method alone), of 627 units, 99 (16%) developed DVT (OR 0.25, 95% CI 0.17 to 0.36). The overall effect also favoured treatment with GCS on a background of another DVT prophylactic method (P < 0.00001).
AUTHORS' CONCLUSIONS:
GCS are effective in diminishing the risk of DVT in hospitalised patients. Data examination also suggests that GCS on a background of another method of prophylaxis is more effective than GCS on its own.

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