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Chinese Journal of Cerebrovascular Diseases(Electronic Edition) ›› 2025, Vol. 19 ›› Issue (05): 397-403. doi: 10.3877/cma.j.issn.1673-9248.2025.05.006

• Clinical Research • Previous Articles    

Analysis of intravenous thrombolysis metrics for acute ischemic stroke at secondary and tertiary hospital stroke centers in Kunming, 2019—2022

Jin Liu1, Jie Zhang1, Song Liu2, Dan Ma1, Jianhong Han1,()   

  1. 1 Department of Neurology, Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
    2 Department of Neurology, Second People's Hospital of Kunming, Kunming 650224, China
  • Received:2025-05-26 Online:2025-10-01 Published:2025-11-24
  • Contact: Jianhong Han

Abstract:

Objective

To analyze the changes in intravenous thrombolysis (IVT) indicators at secondary and tertiary stroke centers in Kunming City, to evaluate the progress of stroke center development, and provide evidence for optimizing IVT quality control.

Methods

Clinical data and IVT indicators were retrospectively analyzed from acute ischemic stroke (AIS) patients admitted to 6 tertiary and 16 secondary hospital stroke centers in Kunming from January 1, 2019, to December 31, 2022. The χ2 test and Mann-Whitney U test were used to compare IVT rates and clinical characteristics between hospital tiers. The χ2 test and Kruskal-Wallis test were applied to assess annual variations in IVT rates, onset-to-needle time (ONT), and door-to-needle time (DNT).

Results

From 2019 to 2022, IVT rates at tertiary and secondary hospitals were 5.90% and 15.69%, respectively ( χ2=1100.068, P<0.001). The overall IVT rates exhibited a steady increase (4.63% in 2019, 9.50% in 2020, 8.81% in 2021, and 11.33% in 2022; χ2=314.581, P<0.001). Tertiary hospitals demonstrated significantly longer median ONT [166 ( 116, 225) min vs 154 (105, 212) min, Z=4.613, P<0.001] and DNT [47 (35, 71) min vs 45 (35, 59) min, Z=2.731, P=0.006] compared to secondary hospitals. The complication rate of IVT was lower in tertiary hospitals (14.65% vs 17.46%; χ2=5.687, P=0.017).

Conclusion

From 2019 to 2022, IVT rates increased and ONT/DNT decreased across Kunming's stroke centers, indicating tangible progress in stroke care quality. However, significant disparities persist between tertiary and secondary hospitals, necessitating further optimization of stroke management protocols.

Key words: Acute ischemic stroke, Stroke center, Intravenous thrombolysis rate, Kunming City, Fast-track pathway

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