[Myocardial function before and after reopening of chronic coronary occlusion].
To assess the myocardial function before and after reopening of chronic coronary artery occlusions, 20 patients were investigated at rest and during exercise with ECG and equilibrium radionuclide ventriculography. The recanalisation of the chronically occluded vessel was carried out by means of Rotacs-catheter in 17 patients, of a guide wire enforced by recanalisation-catheter in 2 patients and of a thin guide wire alone in 1 patient, always followed by conventional balloon angioplasty. After successful PTCA the average coronary artery stenosis diameter decreased from 100% to 34 +/- 6%. Angina pectoris and/or dyspnea observed during exercise were improved in 83% of the patients. The radionuclide global left ventricular ejection fraction at rest increased from 55 +/- 9% to 59 +/- 10% (p < 0.05), and during exercise from 52 +/- 12% to 61 +/- 12% (p < 0.05). The improvement in global ejection fraction at rest was more pronounced in 5 patients, who suffered from angina pectoris at rest before PTCA (from 56 +/- 4% to 65 +/- 9%, p < 0.05). It is concluded that reopening of chronically occluded coronary arteries in properly selected patients leads to a significant improvement of the global left ventricular function at rest and during exercise.
Gyöngyösi
M
M
Klinikum der Inneren Medizin No. 1, Szentgyörgyi Albert Medizinische Universität (SZOTE), Szeged, Ungarn.
Klepzig
H
H
Maul
F D
FD
Vallbracht
C
C
Kaltenbach
M
M
Hör
G
G
D000328:Adult; D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation*; D002302:Cardiac Output / Q000502:physiology; D003326:Coronary Circulation / Q000502:physiology; D003327:Coronary Disease / Q000503:physiopathology / Q000628:therapy*; D004562:Electrocardiography; D004867:Equipment Design; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction / Q000502:physiology*; D017202:Myocardial Ischemia / Q000503:physiopathology / Q000628:therapy*; D015635:Radionuclide Ventriculography
Myokardfunktion vor und nach Wiedereröffnung eines chronischen Koronarverschlusses.