SEASONAL VARIATION OF CEREBRAL VENOUS THROMBOSIS IN BASRA GOVERNORATE

Author Name: 1. Wefak Hasan Al-Kawaz 2. Noor Dheyaa Jasim Al-Gaswan 3. Ali Abduridha Jabbar

Volume/Issue: 06/11

Country: Iraq

DOI NO.: 08.2020-25662434 DOI Link: https://doi-ds.org/doilink/04.2026-94574892/UIJIR

Affiliation:

1. Consultant Family Medicine, F.I.C.M.S (FM), Al-Sadder Teaching Hospital, Basrah Health Directorate, Ministry of Health, Basrah, 61001, Iraq.
2. Family medicine specialist, Mohammed Aldurra Primary Health Center, Basrah Health Directorate, Ministry of Health, Basrah, 61009, Iraq.
3. Neurology specialist, Al-Sayyab Teaching Hospital, Basrah Health Directorate, Ministry of Health, Basrah, 61042, Iraq.

ABSTRACT

Background: cerebral venous thrombosis is an uncommon stroke subtype that affect mainly young age group specially women in reproductive age, although CVT has significant morbidity and mortality, studies regarding its epidemiological data are scares in our country and geographical region including incidence rate, mortality rate and possible seasonality. Aims of study: to determine yearly incidence rate of cerebral venous thrombosis in Basra governorate, age, gender distribution, if there is a possible seasonal variation in incidence and the outcome if patients. Method: cross sectional, retrospective, registry based study was conducted ، all confirmed CVT cases and their data admitted in neurology ward in Basra teaching hospital and medical and neurosurgical wards in other hospitals between first of January 2010 to end of December 2019 were collected and analyzed. Results: During the 10 years duration between 2010 to 2019, 383 patients were registered with confirmed CVT, 286 were females and 97 were males with 3:1 female male ratio. Mean age of patients were 33 years which was the same for both genders. There was a higher incidence rate in 35-45 years age group with 32.4% of total population. There was no significant seasonal variation in the incidence of CVT in total population and in female gender but male gender showed significant seasonal variation with higher incidence in summer season. Yearly incidence rate of CVT in Basra governorate from 2010 to 2019 were 10.6, 14.3, 25.18, 31, 27.8, 28.35, 21.09, 24.7, 28.55, 27.28 per million per year consecutively with mean 23.9 cases per million per year, with no significant increment or decrement in incidence during the same duration. Mortality rate were 2.3% with no significant gender differences. Conclusion: CVT is a rare stroke subtype with higher incidence in Basra governorate compared to reported incidence globally. it affects mainly younger age group and women, with higher incidence in summer season in male gender and has low mortality rate compared to arterial stroke.

Key words: Cerebral Venous Thrombosis, Stroke, Seasonal Variation, Cerebral Dural Sinuses, Thrombosis.