The Hospitalization Rate of Cerebral Venous Sinus Thrombosis before and during COVID-19 Pandemic Era: A Single-Center Retrospective Cohort Study

J Stroke Cerebrovasc Dis. 2022 Jul;31(7):106468. doi: 10.1016/j.jstrokecerebrovasdis.2022.106468. Epub 2022 Mar 25.

Abstract

Objectives: There are several reports of the association between SARS-CoV-2 infection (COVID-19) and cerebral venous sinus thrombosis (CVST). In this study, we aimed to compare the hospitalization rate of CVST before and during the COVID-19 pandemic (before vaccination program).

Materials and methods: In this retrospective cohort study, the hospitalization rate of adult CVST patients in Namazi hospital, a tertiary referral center in the south of Iran, was compared in two periods of time. We defined March 2018 to March 2019 as the pre-COVID-19 period and March 2020 to March 2021 as the COVID-19 period.

Results: 50 and 77 adult CVST patients were hospitalized in the pre-COVID-19 and COVID-19 periods, respectively. The crude CVST hospitalization rate increased from 14.33 in the pre-COVID-19 period to 21.7 per million in the COVID-19 era (P = 0.021). However, after age and sex adjustment, the incremental trend in hospitalization rate was not significant (95% CrI: -2.2, 5.14). Patients > 50-year-old were more often hospitalized in the COVID-19 period (P = 0.042). SARS-CoV-2 PCR test was done in 49.3% out of all COVID-19 period patients, which were positive in 6.5%. Modified Rankin Scale (mRS) score ≥3 at three-month follow-up was associated with age (P = 0.015) and malignancy (P = 0.014) in pre-COVID period; and was associated with age (P = 0.025), altered mental status on admission time (P<0.001), malignancy (P = 0.041) and COVID-19 infection (P = 0.008) in COVID-19 period.

Conclusion: Since there was a more dismal outcome in COVID-19 associated CVST, a high index of suspicion for CVST among COVID-19 positive is recommended.

Keywords: COVID-19; Hospitalization rate; Prognosis; SARS-CoV-2; Sinus thrombosis; Stroke.

MeSH terms

  • Adult
  • COVID-19* / diagnosis
  • COVID-19* / epidemiology
  • Hospitalization
  • Humans
  • Middle Aged
  • Pandemics
  • Retrospective Studies
  • SARS-CoV-2
  • Sinus Thrombosis, Intracranial* / diagnosis
  • Sinus Thrombosis, Intracranial* / epidemiology
  • Sinus Thrombosis, Intracranial* / therapy