Cerebral venous thrombosis, seasonal trends, and climatic influence: A region-specificstudy

Autor: Sanjith Aaron, Jeyaseelan Lakshmanan, Thambu D Sudarsanam, Kenneth Benjamin, Jothilakshmi Durairaj, Vivek Mathew, Ajith Sivadasan, A T Prabhakar, Shyam Kumar N. Keshava, Pavitra R Mannam, Prabhu Kirubakaran, Jayaprakash Muliyil, Mathew Alexander
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Annals of Indian Academy of Neurology, Vol 23, Iss 4, Pp 522-527 (2020)
Druh dokumentu: article
ISSN: 0972-2327
1998-3549
DOI: 10.4103/aian.AIAN_409_19
Popis: Background and Purpose: Studies looking at seasonal variation on cerebral venous thrombosis (CVT) are few with conflicting conclusions. In this region-specific study, we looked for climatic influence and seasonal trends on the incidence of CVT. Methods: Imaging proven adult CVT cases treated over a period of 18 years from a specific geographical location with similar seasons and climatic conditions were studied. Metrological parameters prepared using 30 years of data was used. Quantum geographical information system (QGIS software) and SPSS v 22 were used for patient plotting and analysis. Results: Total of 970 cases were studied. The incidence was significantly higher in summer 411 (42.3%) compared with autumn 317 (32.7%) and winter 242 (25.05); P = 0.038. This trend was consistent across all the 18 years in time series analysis. Mean age was 33.5 years (range 18–88 years). A significant majority 673 (69.4%) were below 40 years of age; P = 0.012. Females constituted 394 (40.6%) of cases. Postpartum CVT cases constituted 237 (30%). Interaction analysis showed younger age (
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