• Yaseen M Arabi, Sami Alsolamy, Abdulaziz Al-Dawood, Awad Al-Omari, Fahad Al-Hameed, Karen E A Burns, Mohammed Almaani, Hani Lababidi, Ali Al Bshabshe, Sangeeta Mehta, Abdulsalam M Al-Aithan, Yasser Mandourah, Ghaleb Almekhlafi, Simon Finfer, Abdukahil Sheryl Ann I SA Intensive Care Department, King Abdulaziz Medical City, Riyadh, Kingdom of Saudi Arabia., Lara Y Afesh, Maamoun Dbsawy, and Musharaf Sadat.
• Intensive Care Department, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, ICU 1425, PO Box 22490, Riyadh, 11426, Kingdom of Saudi Arabia. arabi@ngha.med.sa.
• Trials. 2016 Aug 3; 17 (1): 390.

BackgroundVenous thromboembolism (VTE) remains a common problem in critically ill patients. Pharmacologic prophylaxis is currently the standard of care based on high-level evidence from randomized controlled trials. However, limited evidence exists regarding the effectiveness of intermittent pneumatic compression (IPC) devices. The Pneumatic compREssion for preventing VENous Thromboembolism (PREVENT trial) aims to determine whether the adjunct use of IPC with pharmacologic prophylaxis compared to pharmacologic prophylaxis alone in critically ill patients reduces the risk of VTE.Methods/DesignThe PREVENT trial is a multicenter randomized controlled trial, which will recruit 2000 critically ill patients from over 20 hospitals in three countries. The primary outcome is the incidence of proximal lower extremity deep vein thrombosis (DVT) within 28 days after randomization. Radiologists interpreting the scans are blinded to intervention allocation, whereas the patients and caregivers are unblinded. The trial has 80 % power to detect a 3 % absolute risk reduction in proximal DVT from 7 to 4 %.DiscussionThe first patient was enrolled in July 2014. As of May 2015, a total of 650 patients have been enrolled from 13 centers in Saudi Arabia, Canada and Australia. The first interim analysis is anticipated in July 2016. We expect to complete recruitment by 2018.Trial RegistrationClinicaltrials.gov: NCT02040103 (registered on 3 November 2013). Current controlled trials: ISRCTN44653506 (registered on 30 October 2013).

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