JCCVS
Journal of Cardiology & Cardiovascular Surgery

Journal of Cardiology & Cardiovascular Surgery scientific, open-access, double-blind peer-reviewed journal covering a wide spectrum of topics in cardiology and cardiovascular surgery. This journal is indexed by indices that are considered international scientific journal indices (DRJI, ESJI, OAJI, etc.). According to the current Associate Professorship criteria, it is within the scope of International Article 1-d. Each article published in this journal corresponds to 5 points.

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Original Article
Chronotropic incompetence in coronary slow flow
Abstract
Aims: Previous studies have associated coronary slow flow (CSF) and chronotropic incompetence (CI) with increased mortality. There is no established treatment protocol for CSF. In this study, we aimed to answer questions such as "Is there CI in patients with CSF? If so, is there an increase in the frequency of hospital admissions due to cardiac complaints in these patients?"
Methods: The study included 29 patients with CSF detected according to Thrombolysis in Myocardial Infarction (TIMI) frame count during angiography and 27 healthy volunteers with normal coronary artery as a control group. The relationship between coronary slow flow and chronotropic incompetence between the patient and healthy control groups and the differences between these and healthy control individuals were compared.
Results: The maximum heart rate reached during the treadmill exercise test was found to be statistically significantly lower in patients with coronary slow flow compared to the control group (p=0.045). The presence of chronotropic incompetence in the patient group with coronary slow flow was found to be statistically significantly higher than the control group (p=0.038). However, there was no significant difference between the chronotropic indexes (p=0.953). Duke treadmill scores (DTS) were found to be similar between the groups (p>0.05).
Conclusion: Patients with coronary slow flow were found to have statistically significant higher chronotropic incompetence in the treadmill exercise test. However, no significant difference was observed between the groups in the chronotropic index values, which are an indicator of chronotropic incompetence. These results suggest the presence of autonomic dysfunction in coronary slow flow phenomenon and that chronotropic incompetence may be caused by coronary slow flow phenomenon and should be investigated in etiology.

Keywords : Coronary slow flow, chronotropic incompetence, treadmill exercise test, chronotropic index

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Article available in :
Volume 2, Issue 4, 2024
Page : 72-78
https://doi.org/10.51271/JCCVS-0042
Article Information
Received : 14 Eki 2024
Accepted : 13 Ara 2024
Published : 29 Ara 2024
Corresponding Author :

Merve Çaylı: Department of Cardiology, Faculty of Medicine, Kırıkkale University, Kırıkkale, Turkiye

[email protected]
Citation : Çaylı M, Yıldırım N. Chronotropic incompetence in coronary slow flow. J Cardiol Cardiovasc Surg. 2024;2(4):72-78.

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