• Mamas A Mamas, Glen P Martin, Marek Grygier, Rishi K Wadhera, Christian Mallen, Nick Curzen, Harindra C Wijeysundera, Amitava Banerjee, Evangelos Kontopantelis, Muhammad Rashid, Janusz Sielski, and Zbigniew Siudak.
• Pol. Arch. Med. Wewn. 2024 Apr 25.

IntroductionThe Russian invasion of Ukraine in February 2022 resulted in the displacement of approximately 12.5 million refugees to adjacent countries including Poland, that may have strained healthcare service delivery.ObjectivesUsing the ST-elevation myocardial infarction (STEMI) data, we aimed to evaluate whether the Russian invasion of Ukraine has indirectly impacted the delivery of acute cardiovascular care in Poland.Patients And MethodsWe analyzed all adult patients undergoing percutaneous coronary interventions (PCI) for STEMI across Poland between 25th February 2017 to 24th May 2022. Centers were allocated to regions of <100km and >100km of the Polish-Ukraine border. Mixed effect generalized linear regression models with random effects per hospital were used to explore the associations between the war in Ukraine starting with several outcomes of interest, and whether these associations differed across regions of 100km from the Polish-Ukraine border.ResultsA total of 90,115 procedures were included in the analysis. The average number of procedures per-month was similar to predicted volume for centers in the >100km region, while the average number of PCI was higher than expected (by an estimated 15 (11-19)) for the <100km region. There was no difference in adjusted fatality rate or quality of care outcomes pre- vs. during-war in both <100 and >100 km regions, with no evidence of a difference-in-difference across regions.ConclusionsFollowing the Russian invasion of Ukraine, there was only a modest and temporary increase in primary PCI predominantly in centers situated within 100km of the border, although no significant impact on in-hospital fatality rate.

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