There is a real challenge in the management of ischemia with non-obstructive coronary artery disease. So, we need to study the mechanisms of persistent angina and non-obstructive coronary artery (ANOCA) patients. One of those possible mechanisms is blood pressure variability (BPV). We aimed to study the relation between BPV and angina in patients with non-obstructive coronary artery disease. Our study included 150 patients with chest pain and positive non-invasive stress test suggestive of myocardial ischemia and normal coronary angiography or non-obstructive coronary artery disease. We used an ambulatory blood pressure monitoring device. We found a positive correlation between BPV as measured by average real variability (ARV) as well as standard deviation (SD) parameters and the severity of anginal symptoms with P values for all parameters was 0.001 except day systolic SD P-value was 0.021. We performed a regression analysis for all statistically significant parameters. We found that 24H diastolic ARV, day diastolic ARV, night diastolic ARV, 24H diastolic SD, day diastolic SD, and night diastolic SD were independent predictors of the severity of angina with P-values (0.015, 0.007, 0.011, 0.037, 0.014, and 0.029), respectively. We concluded that short-term BPV represented by ARV and SD had a consistent association with angina in patients with non-obstructive coronary artery disease. The diastolic parameters of ARV and SD were independent predictors of the severity of angina with non-obstructive coronary artery disease.
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Alaarag, A., Amin, O. Blood pressure variability in patients with angina and non-obstructive coronary artery disease. J Hum Hypertens (2021). https://doi.org/10.1038/s41371-020-00475-3