The association of coronary slow flow with time to peak systolic strain Koroner yavaş akimin zirve sistolik gerilim (strain) süresi ile ilişkisi
Turk Kardiyoloji Dernegi Arsivi, cilt.39, sa.1, ss.29-34, 2011 (Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 39 Sayı: 1
- Basım Tarihi: 2011
- Dergi Adı: Turk Kardiyoloji Dernegi Arsivi
- Derginin Tarandığı İndeksler: Scopus, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.29-34
- Anahtar Kelimeler: Blood flow velocity, Coronary angiography, Coronary circulation/physiology, Echocardiography, Doppler/methods, Myocardial contraction/physiology, Systole/physiology, Ventricular function, left/physiology
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Objectives: Tissue deformation time is an important factor in regional myocardial contractile functions. The aim of this study was to evaluate the association of coronary slow flow (CSF) with time to peak systolic strain. Study design: The study included 25 patients (23 men, 2 women; mean age 48.4±11.9 years) who were found to have CSF on coronary angiography and 20 healthy controls (16 men, 4 women; mean age 51±11.3 years) with normal coronary angiograms. Coronary slow flow was determined using the TIMI frame count (TFC) method. Echocardiographic recordings were obtained from standard apical and parasternal views. Color Doppler myocardial images were acquired at 160-200/sec frame rates. Time to peak systolic strain was measured from the basal, mid, and apical segments of all left ventricular walls. Results: There were no significant differences between the patients and controls with respect to left ventricular systolic functions (ejection fraction 67±5% vs. 66±4%). TIMI frame counts were greater in the CSF group compared to the controls (left anterior descending artery 42.8±7.7 vs. 17.9±3.5; circumflex artery 37.7±6.5 vs. 16.6±2.9; right coronary artery 41.2±6.4 vs. 17.3±2.7, respectively; p<0.001). All peak systolic strain values measured at 18 segments of the left ventricle walls on color Doppler myocardial images were significantly higher in the CSF group compared to the controls (p<0.001). In both groups, the mean peak systolic strain values obtained in the same walls were shorter in the mid segments compared with basal segments (p<0.05), but mid and apical segments did not differ significantly in this respect (p>0.05). Conclusion: Our study is the first to demonstrate prolonged peak systolic strain times in CSF. This prolongation might be used as a predictor for the deterioration of regional myocardial contractile functions in CSF patients. © 2011 Türk Kardiyoloji Derneǧi.