A systematic review and meta-analysis of the extraand intra-organ vasculature of the spleen by Russian Science Citation Index articles

Aim - to present up-to-date data on the extra- and intraorgan vasculature (arterial and venous) of the spleen in different sex, age and body type groups. Materials and Methods. The search was carried out using the Russian Science Citation Index. The selection of materials for inclusion in the review was performed by two independent researchers. The exclusion of unsuitable works occurred in two stages: on the first, papers with inappropriate titles and annotations were excluded, on the second, articles with unsuitable full texts. The analysis was performed using the statistical software R (version 4.1) and the metafor R extension package. Random effects models were used for all analyses. I2 and t2 statistics were used to measure the heterogeneity between studies. Results. The analysis included 32 papers, the publication period of which is from 2001 to 2023. The results of a meta-analysis of the diameter of the splenic artery show that the average diameter of this artery is estimated at about 5.42 mm, with a standard error of 0.27 mm. The results of the meta-analysis of the diameter of the splenic vein also show significant heterogeneity between the studies, which is confirmed by the high statistical values of I2 (99.9%) and H2 (1007.9). This indicates differences in results between studies, which may be caused by differences in methodology, the study group, and other factors. Conclusions. Knowledge of the variant anatomy of the spleen vessels is important for planning and performing operations on the spleen and abdominal organs in general.

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