Abstract Number: PB2263
Meeting: ISTH 2020 Congress
Theme: Venous Thromboembolism and Cardioembolism » VTE Diagnosis
Background: University Hospitals Plymouth is a 900 bedded teaching hospital designated a venous thromboembolism (VTE) exemplar site in 2009 reflecting work in reducing hospital acquired thrombosis (HAT).
Aims: The study was to look at the impact of national guidance on VTE prevention comparing hospital acquired with community acquired events and compare number of deep vein thrombosis (DVT) with pulmonary embolism (PE) events.
Methods: All VTE events from targeted investigations comprising CT pulmonary angiograms, SPECT-CT scans and Doppler ultrasounds of the upper and lower limbs were collected between January 1st 2010 to the 31st December 2019. Positive events are reviewed to see if they meet the HAT criteria.
Results: In 2010 there were 649 total VTE events with 329 DVT’s and 320 PE’s. Of these 201 (31%) were HAT events, comprising 85 DVT and 116 PE; a significantly higher number of PE compared to DVT (p=0.005). Over 10 years total VTE has increased by 120 to 769 (18%). Over the same period total DVT’s diagnosed has remained relatively constant with 315 in 2019, a 4% decrease. In 2019 454 PE’s were diagnosed, giving an increase of 42% (from 320) over ten years showing steady annual increases. In 2010 PE and DVT diagnoses were similar numbers but by 2019 the split of PE compared to DVT was 59:41 compared with 49:51 previously. For HAT events DVT numbers have fallen from 85 events (42%) in 2010 to 51 (28%) in 2019 whilst total HAT has also reduced.
Conclusions: The overall reduction in HAT is likely to be associated with improved awareness of thrombosis and increased VTE prevention in hospitalised patients. Total PE increases may be explained by more sensitive CT scanners able to detect smaller thromboses. We have previously shown HAT reduction is significant and the challenge is to further reduce these numbers.
| YEAR | Total VTE | All DVT (%) | All PE (%) | HAT DVT (%) | HAT PE (%) |
| 2010 | 649 | 329 (51) | 320 (49) | 85 (42) | 116 (58) |
| 2011 | 782 | 325 (42) | 457 (58) | 73 (31) | 165 (69) |
| 2012 | 793 | 311 (39) | 482 (61) | 71 (33) | 146 (67) |
| 2013 | 805 | 342 (42) | 463 (58) | 66 (38) | 106 (62) |
| 2015 | 835 | 340 (41) | 495 (59) | 60 (31) | 131 (69) |
| 2016 | 852 | 384 (45) | 468 (55) | 64 (38) | 105 (62) |
| 2017 | 836 | 329 (39) | 507 (61) | 56 (32) | 119 (68) |
| 2018 | 825 | 338 (41) | 487 (59) | 65 (35) | 121 (65) |
| 2019 | 769 | 315 (41) | 454 (59) | 51 (28) | 132 (72) |
[Venous Thromboembolism events 2010 to 2019]
To cite this abstract in AMA style:
Rowswell H, Nokes T. Ten Years of Venous Thromboembolism Events in a Large Teaching Hospital: Changing Patterns of Disease [abstract]. Res Pract Thromb Haemost. 2020; 4 (Suppl 1). https://abstracts.isth.org/abstract/ten-years-of-venous-thromboembolism-events-in-a-large-teaching-hospital-changing-patterns-of-disease/. Accessed December 11, 2023.« Back to ISTH 2020 Congress
ISTH Congress Abstracts - https://abstracts.isth.org/abstract/ten-years-of-venous-thromboembolism-events-in-a-large-teaching-hospital-changing-patterns-of-disease/