Clinical research in cardiology : official journal of the German Cardiac Society · 2026
Circadian patterns of angiographic thrombus burden in STEMI.
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Taşkan Hatice, Yasar Ayse Saatci, Baghırov Farıd, Eşki Selen, Murat Ender, Fırtına Serdar, Yaşar Salim, Görmel Suat, Asil Serkan, Yıldırım Erkan, Çelik Murat, Yüksel Uygar Çagdas, Kabul Hasan Kutsi, Barçın Cem
Аннотация
BACKGROUND: Circadian variation in STEMI onset is well established; however, the relationship between symptom onset time and thrombus burden remains unclear.
METHODS: We retrospectively analyzed 1068 STEMI patients treated with primary PCI between January 2018 and September 2021. Patients were categorized into four groups according to symptom onset time. Thrombus burden was assessed using the TIMI thrombus grading system. Multivariable logistic regression analysis was performed to identify independent predictors of large thrombus burden.
RESULTS: STEMI onset showed a clear circadian pattern, with a morning peak between 06:00 and 11:59 (p < 0.001). Patients with nighttime symptom onset (00:00-05:59) had a significantly higher rate of large thrombus burden (p < 0.001). In univariate analysis, hypertension and nighttime symptom onset were associated with large thrombus burden; however, these associations did not remain independently significant after multivariable adjustment.
CONCLUSION: STEMI incidence follows a circadian pattern, with a morning peak; however, although thrombus burden appears higher during nighttime hours, this association was not independent after adjustment.
METHODS: We retrospectively analyzed 1068 STEMI patients treated with primary PCI between January 2018 and September 2021. Patients were categorized into four groups according to symptom onset time. Thrombus burden was assessed using the TIMI thrombus grading system. Multivariable logistic regression analysis was performed to identify independent predictors of large thrombus burden.
RESULTS: STEMI onset showed a clear circadian pattern, with a morning peak between 06:00 and 11:59 (p < 0.001). Patients with nighttime symptom onset (00:00-05:59) had a significantly higher rate of large thrombus burden (p < 0.001). In univariate analysis, hypertension and nighttime symptom onset were associated with large thrombus burden; however, these associations did not remain independently significant after multivariable adjustment.
CONCLUSION: STEMI incidence follows a circadian pattern, with a morning peak; however, although thrombus burden appears higher during nighttime hours, this association was not independent after adjustment.