[Systolic and diastolic left ventricle function assessment by tissue Doppler echocardiography in patients with perfusion defects in SPECT study].
BACKGROUND
Tissue Doppler imaging (TDI) facilitates the quantitative assessment of the regional systolic and diastolic left ventricle function. Heart scintigraphy (SPECT) facilitates the assessment of regional perfusion of the myocardium. The aim of the study was the evaluation of the correlation between the regional myocardial perfusion defects observed in the SPECT study and the regional systolic and diastolic left ventricle function observed in TDI examination in the ischaemic heart disease patients.


METHODS
In 40 patients (33 men and 7 women) aged 43-74 years (mean age 56 years) diagnosed of ischaemic heart disease on the basis of coronary angiography, rest TDI examination was performed. Maximal systolic and maximal early-diastolic myocardial velocities were assessed in 13 myocardial segments of the left ventricle, supplied by respective coronary arteries (left anterior descending artery--LAD, circumflex artery--Cx, right coronary artery--RCA). During rest and exercise perfusion scintigraphy of the heart (Tc99 MIBI SPECT) myocardial perfusion was evaluated in the segments analysed previously during TDI study. On the basis of the SPECT examination results the patients were divided into three groups: group I) patients with fixed perfusion defects, group II) patients with exercise-induced perfusion defects and normal rest perfusion, group III) patients with normal perfusion during rest and exercise.


RESULTS
Systolic and diastolic myocardial velocity in LAD and Cx supplied segments were significantly higher in group II and group III as compared with group I. Systolic and diastolic velocities of myocardium supplied by LAD were significantly lower in group II as compared with group III. In Cx supplied region the diastolic myocardial velocity was significantly lower in group II as compared with group Ill.


CONCLUSIONS
In the left ventricle myocardial regions with fixed perfusion defects, statistically significant decrease of systolic and diastolic myocardial velocities was observed. Moreover, the decrease of diastolic myocardial velocity in the rest TDI examination was found in patients with normal rest perfusion and exercise-induced perfusion defects.
Kostkiewicz
Magdalena
M
Klinika Chorób Serca i Naczyń, Collegium Medicum, Uniwersytetu Jagiellońskiego w Krakowie.
Płazak
Wojciech
W
Tracz
Wiesława
W
Olszowska
Maria
M
Pieniazek
Piotr
P
D000328:Adult; D000368:Aged; D003971:Diastole; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015428:Myocardial Reperfusion Injury / Q000000981:diagnostic imaging; D017682:Myocardial Stunning / Q000000981:diagnostic imaging*; D019275:Radiopharmaceuticals; D015203:Reproducibility of Results; D013599:Systole; D017256:Technetium Tc 99m Sestamibi; D015899:Tomography, Emission-Computed, Single-Photon; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging*; D016277:Ventricular Function, Left
D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi