Left Ventricular Twist Mechanics Are Impaired in Patients with Coronary Slow Flow

Abstract

We demonstrated that LV twist mechanics are impaired in CSF patients. Worse LV twist parameters were associated with greater TIMI frame count.

Effect of Coronary Slow Flow on the Longitudinal Left Ventricular Function Assessed by 2‐Dimensional Speckle‐Tracking Echocardiography

“…Studies on tissue Doppler imaging (pulsed wave or color coded) indices in patients with the coronary slow flow phenomenon have yielded different results. Although all of these studies were in agreement regarding a′ inasmuch as they reported no difference between patients with the coronary slow flow phenomenon and control groups, some of them showed that s′ and e′ were different between the groups, 13 , 14 , 17 , 18 , 24 and others revealed no difference between the groups 15 , 16 , 19 , 20 . As mentioned above, our results showed that s′ and e′ were different between our study groups.…”

“…Although that study was larger than our study, and frequency matching regarding hypertension and diabetes mellitus was done, we performed oneto-one patient matching for age, sex, hypertension, and diabetes mellitus. This factor is also applicable to a study conducted by Barutçu et al, 24 who showed that diabetes and hypertension could impair LV systolic and diastolic deformation. [25][26][27][28][29][30] As a result, the strength of our study compared with that study was the one-to-one matching of the patient and control groups regarding hypertension and diabetes mellitus.…”

Left Ventricular Myocardial Deformation Parameters Are Affected by Coronary Slow Flow Phenomenon: A Study of Speckle Tracking Echocardiography

“…In our study, however, left ventricular longitudinal deformation parameters were not different between the groups. Barutcu et al evaluated the effects of CSFP on left ventricular twist mechanics by STE. Left ventricular twist, torsion, and apical rotation values were lower in patients with CSFP.…”

Coronary Slow Flow and Subclinical Left Ventricular Dysfunction

“…13) Barutcu, et al also showed significantly impaired LV twist, torsion and apical rotation in the CSF group compared to a control group with normal coronary arteries. 14) Although these studies found consistent results, a number of issues still need to be clarified. No study has evaluated whether CSF independently impairs LV contractility because of the cross-sectional study designs and limited numbers of patients.…”