[Long-term study of functional aerobic capacity after PTCA and CABG].
Long-term functional aerobic capacity, left ventricular function and peripheral circulatory function were investigated in 104 patients with successful PTCA and 38 patients with successful CABG by symptom limited treadmill exercise tests (follow-up range from 1 to 72 months). Before PTCA or CABG, functional aerobic impairment (FAI) and myocardial aerobic impairment (MAI) were higher in CABG group than in PTCA group. In PTCA group, FAI decreased significantly from 3.2 +/- 20.6% before intervention to -15.4 +/- 19.4% at the most recent follow-up examination. In CABG group, FAI decreased significantly from 33.9 +/- 28.1% before surgery to 4.6 +/- 22.9% at the most recent follow-up examination. MAI was significantly improved in PTCA group (from 20.2 +/- 17.8% to 9.9 +/- 15.8%) and in CABG group (from 31.9 +/- 21.7% to 9.9 +/- 19.3%), over two years after those interventions. Peripheral circulatory impairment (PCI) was also significantly improved in PTCA group (from -17.0 +/- 22.2% to -25.2 +/- 20.4%) and in CABG group (from 2.0 +/- 25.7% to -5.3 +/- 20.7%), over two years after those interventions. These results suggest that the long-term improvement of functional aerobic capacity after PTCA and CABG was due to the improvement of left ventricular function and peripheral circulatory function.
Inishi
Y
Y
3rd Department of Internal Medicine, Toho University School of Medicine.
D000332:Aerobiosis; D015906:Angioplasty, Balloon, Coronary; D001775:Blood Circulation; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000503:physiopathology*; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016277:Ventricular Function, Left