[Mid- to long-term effects of delayed percutaneous coronary intervention on left ventricular function and prognosis in patients with acute myocardial infarction].
OBJECTIVE
To investigate the mid- to long-term effects of delayed percutaneous coronary intervention (PCI) on the left ventricular function and clinical outcome of patients with acute myocardial infarction (AMI).


METHODS
PCI (including percutaneous transluminal coronary angioplasty and stenting) was performed in 42 patients within 1 to 2 weeks following the onset of AMI (PCI group), with another 31 patients who were admitted within the same period to receive medication for AMI serving as the control group. The patients in both groups were observed for comparison of the occurrence of reinfarction and angina, mortality at 1 and 6 months, and findings by ultrasound cardiograms (UCG).


RESULTS
In PCI group, the left ventricular function were obviously improved as compared with the control group (P<0.01) 1 month after the onset of AMI, showing greater improvement at 6 months (P<0.01). No death or reinfarction occurred in the PCI group, with only 1 patients experiencing angina 5 months after PCI. In control group, death occurred in 2 cases, reinfarction in 1 case, recurrent angina in 4 cases (include 2 cases of early postinfarction angina).


CONCLUSIONS
Delayed PCI may significantly improve the prognosis of patients with AMI and prolong their survival without cardiovascular accidents and ameliorate their left ventricular functions, with high success rate of the operation.
Huang
Xiao-ming
XM
Department of Cardiology, Second People's Hospital of Gulin, Gulin 541001, China.
Pang
Zhen-yao
ZY
Huang
Qian-ying
QY
Chen
Ping
P
Sun
Yi-lan
YL
Ma
Liu-ying
LY
Huang
Xiu-hua
XH
Jin
Ming-hua
MH
D000328:Adult; D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D011379:Prognosis; D015607:Stents; D013997:Time Factors; D016277:Ventricular Function, Left