Incidence and Predictors of Recurrence and Mortality Following First Venous Thromboembolism Among the Saudi Population: Single-Center Cohort Study

Overview

Journal Int J Gen Med

Publisher Dove Medical Press

Specialty General Medicine

Date 2022 Oct 6

PMID 36199587

Authors

Fahad A S AlEidan

Reem K AlManea

Alyah T AlMoneef

Nada A Shalash

Norah A AlRajhi

Sarah F AlMousa

Abdulrahman Al Raizah

Khadega A Abuelgasim

Affiliations

Soon will be listed here.

Abstract

Background: Little is written about recurrence and mortality rates after a first episode of venous thromboembolism (VTE) among Saudi population.

Aim: Determine incidence rates and assess predictors of recurrence and mortality following the first VTE event.

Patients And Methods: A total of 1124 patients aged ≥18 years with symptomatic VTE confirmed by imaging tests were evaluated. The incidence of VTE recurrence and mortality were assessed. The association between patient characteristics, and VTE recurrence and mortality was explored by estimating the hazard ratio (HR) and 95% confidence interval (CI). The difference between cancer-related, provoked and unprovoked VTE in terms of recurrence and mortality was explored using Kaplan-Meier curves.

Results: The annual incidence rate of the first VTE was 1.7 per 1000 patients. Of 1124 patients with first VTE, 214 (19%) developed recurrent VTE, and 192 (17%) died with overall incidence rates of 15.8 per 100 person-years (95% CI, 13.8-18.0) and 10.0 per 100 person-years (95% CI, 8.7-11.5). Intensive care unit (ICU) admission (HR, 2.15; 95% CI, 1.67-3.10), presence of active cancer (HR, 2.97; 95% CI, 1.87-3.95), immobilization (HR, 2.52; 95% CI, 1.79-3.67), infection (HR, 2.32; 95% CI, 1.94-3.45), and pulmonary embolism ± deep venous thrombosis (HR, 2.22; 95% CI, 1.56-3.16) were found to be independent predictors of recurrent VTE. Recurrence carries a high hazard of mortality (HR, 5.21; 95% CI, 3.61-7.51). The estimated median time to VTE recurrence was lower in cancer-related VTE (18.7 months) compared with provoked (29.0 months) and unprovoked VTE (28.4 months). The estimated survival median time was lower in cancer-related VTE (21.8 months) compared with provoked (30.5 months) and unprovoked VTE (29.8 months).

Conclusion: Immobilization and presence of active cancer, infection, and PE ± DVT were significant predictors of recurrent VTE. Patients who developed recurrent VTE had a 5.2-fold higher hazard of mortality compared with patients with no VTE recurrence.

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