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The Modified Ottawa Score and Clinical Events in Hospitalized Patients with Cancer-Associated Thrombosis from the Swiss VTE Registry


Alatri, Adriano; Mazzolai, Lucia; Kucher, Nils; Aujesky, Drahomir; Beer, Jürg H; Baldi, Thomas; Banyai, Martin; Hayoz, Daniel; Kaeslin, Thomas; Korte, Wolfgang; Escher, Robert; Husmann, Marc; Frauchiger, Beat; Engelberger, Rolf P; Baumgartner, Iris; Spirk, David (2017). The Modified Ottawa Score and Clinical Events in Hospitalized Patients with Cancer-Associated Thrombosis from the Swiss VTE Registry. Seminars in Thrombosis and Hemostasis, 43(8):871-876.

Abstract

The modified Ottawa score (MOS) predicted venous thromboembolism (VTE) recurrence in a cohort of patients with cancer-associated thrombosis mainly managed on an outpatient basis. We aimed to assess the prognostic value of the MOS in hospitalized patients with cancer-associated thrombosis. In 383 hospitalized patients with cancer-associated VTE from the SWIss VTE Registry, 98 (25%) were classified as low risk, 175 (46%) as intermediate risk, and 110 (29%) as high risk for VTE recurrence based on the MOS. Clinical end points were recurrent VTE, fatal VTE, major bleeding, and overall mortality at 90 days. Overall, 179 (47%) patients were female, 172 (45%) had metastatic disease, and 72 (19%) prior VTE. The primary site of cancer was lung in 48 (13%) patients and breast in 43 (11%). According to the MOS, the rate of VTE recurrence was 4.1% for low, 6.3% intermediate, and 5.5% high risk (p = 0.75); the rate of fatal VTE was 0.8, 1.9, and 2.0% (p = 0.69); the rate of major bleeding was 3.1, 4.1, and 3.6% (p = 0.92); and the rate of death was 6.1, 12.0, and 28.2% (p < 0.001), respectively. None of the MOS items was associated with VTE recurrence: female gender hazard ratio (HR) 1.26 (95% confidence interval [CI], 0.53–2.96), lung cancer HR 1.17 (95% CI, 0.35–3.98), prior VTE HR 0.44 (95% CI, 0.10–1.91), breast cancer HR 0.83 (95% CI, 0.19–3.58), and absence of metastases HR 0.74 (95% CI, 0.31–1.74). In hospitalized patients with cancer-associated VTE, the MOS failed to predict VTE recurrence at 3 months but was associated with early mortality.

Abstract

The modified Ottawa score (MOS) predicted venous thromboembolism (VTE) recurrence in a cohort of patients with cancer-associated thrombosis mainly managed on an outpatient basis. We aimed to assess the prognostic value of the MOS in hospitalized patients with cancer-associated thrombosis. In 383 hospitalized patients with cancer-associated VTE from the SWIss VTE Registry, 98 (25%) were classified as low risk, 175 (46%) as intermediate risk, and 110 (29%) as high risk for VTE recurrence based on the MOS. Clinical end points were recurrent VTE, fatal VTE, major bleeding, and overall mortality at 90 days. Overall, 179 (47%) patients were female, 172 (45%) had metastatic disease, and 72 (19%) prior VTE. The primary site of cancer was lung in 48 (13%) patients and breast in 43 (11%). According to the MOS, the rate of VTE recurrence was 4.1% for low, 6.3% intermediate, and 5.5% high risk (p = 0.75); the rate of fatal VTE was 0.8, 1.9, and 2.0% (p = 0.69); the rate of major bleeding was 3.1, 4.1, and 3.6% (p = 0.92); and the rate of death was 6.1, 12.0, and 28.2% (p < 0.001), respectively. None of the MOS items was associated with VTE recurrence: female gender hazard ratio (HR) 1.26 (95% confidence interval [CI], 0.53–2.96), lung cancer HR 1.17 (95% CI, 0.35–3.98), prior VTE HR 0.44 (95% CI, 0.10–1.91), breast cancer HR 0.83 (95% CI, 0.19–3.58), and absence of metastases HR 0.74 (95% CI, 0.31–1.74). In hospitalized patients with cancer-associated VTE, the MOS failed to predict VTE recurrence at 3 months but was associated with early mortality.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Angiology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:November 2017
Deposited On:08 May 2018 15:09
Last Modified:24 Sep 2019 23:28
Publisher:Georg Thieme Verlag
ISSN:0094-6176
OA Status:Closed
Publisher DOI:https://doi.org/10.1055/s-0037-1604086
PubMed ID:28778102

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