[Study of left ventricular blood filling during post-pacing ischemia: comparison of Doppler echocardiography and heart catheterization].
Left ventricular blood filling was performed in 72 patients by using pulsed Doppler echocardiography at rest and in postpacing ischemia. In 10 patients, non-invasive examination findings were compared with the values of a left ventricular pressure curve which had been obtained in frequent atrial pacing. No changes in transmitral blood flow were found in patients without coronary heart disease, whereas 2 types of abnormal transmitral blood flow were detected in those with coronary heart disease in the postpacing period. The patients with Type I abnormal transmitral blood flow exhibited prolonged isovolumetric relaxation and slightly elevated left ventricular end-diastolic pressure in the postpacing period when catheterization was conducted. Those with Type I ("pseudonormal") transmitral blood flow displayed more prolonged relaxation and significantly (greater than 20 mm Hg) elevated end-diastolic pressure. The pattern of changes in transmitral blood flow was not pathognomonic to any definite myocardial abnormality, but reflected the hemodynamics.
Bashchinskiĭ
S E
SE
Osipov
M A
MA
Mazaev
V P
VP
Varentsov
S I
SI
Shalaeva
M Iu
MIu
D000328:Adult; D000368:Aged; D006328:Cardiac Catheterization; D002304:Cardiac Pacing, Artificial; D003327:Coronary Disease / Q000503:physiopathology*; D015150:Echocardiography, Doppler; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction
Izuchenie krovenapolneniia levogo zheludochka vo vremia poststimuliatsionnoĭ ishemii: sopostavlenie dannykh doppler-ékhokardiografii i kateterizatsii serdtsa.