The response of the myocardial metabolism to atrial pacing in patients with coronary slow flow

International Journal of Cardiology
B YaymaciI Dindar

Abstract

The pathophysiology of angina pectoris is not precisely known yet in patients who have no coronary lesion but slow coronary flow by angiography. In this study we aim to display metabolic ischemia via atrial pacing to determine the difference of lactate production and arterio-venous O2 content difference (AVO2). Thirty-four patients with slow coronary flow detected by coronary angiography via the TIMI 'frame count' method were included in this study. The resting and stress images from the patients undergoing myocardial perfusion tomography were recorded, pre and postpacing lactate extraction and AVO2 content difference values were calculated. Patients were classified according to their metabolic responses to atrial pacing stress. Group I consisted of 28 patients (18 male, 10 female, mean age 54.42 +/- 9.61) who did not demonstrate metabolic ischemia and group II consisted of six patients (four male, two female, mean age 60 +/- 5.76) who had metabolic ischemia after the procedure. There was no statistically significant difference between prepacing AVO2 content difference in group I (57.38+/-2.05%) and group II (58.23 +/- 2.11%) (P = NS). However postpacing AVO2 content difference of group I and group II was statistically signific...Continue Reading

References

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Citations

Jul 10, 2003·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Ramazan AtakDeniz Demirkan
Mar 5, 2016·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Sima NarimaniHamidreza Pourhosseini
Feb 28, 2018·Cardiology Research and Practice·Sabri Seyis
Mar 26, 2003·Coronary Artery Disease·Alpay Turan SezginSengul Cehreli
May 7, 2021·BMC Cardiovascular Disorders·Mir Hosein Seyyed MohammadzadAmin Sedokani

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