[Correlation between pressure-derived coronary collateral flow and Rentrop grade after primary percutaneous intervention of acute myocardial infarction].
OBJECTIVE
To analyze the correlation between pressure-derived collateral coronary flow (PDCF) and Rentrop grade of patients with acute myocardial infarction (AMI).


METHODS
PDCF, determined by the ratio of P(w)/P(a), was measured in 29 patients with AMI of the first onset who received primary percutaneous coronary intervention (PCI) within 12 h after the onset. Sufficient collateral flow (group A, n=19) was defined as PDCF>0.24 and insufficient collateral flow (group B, n=10) as PDCF< or =0.24. Rentrop grade of the collateral flow was evaluated by coronary angiography. Echocardiography was performed on the 3rd and 30th day after PCI. The left ventricular ejection fraction, end-systolic and end-diastolic volumes, and the related indexes were obtained.


RESULTS
Rentrop grade was significantly related to PDCF (r=0.75, P<0.01), but a wide range of PDCF was observed in patients with Rentrop grade< or =1.


CONCLUSIONS
PDCF measurement allows quantitative evaluation of the collateral flow in patients with AMI.
Cai
Zhi-xiong
ZX
Affiliated Shantou Hospital of Sun Yat-sen University, Shantou 515031, China. czx@sthospital.com
Wang
Xiao-qing
XQ
Lan
Bin
B
Hu
Lian-qing
LQ
Chen
Ping
P
Zhu
Zhi-dan
ZD
Guo
Shun-qi
SQ
Luo
Yan-hua
YH
Xu
Rong-he
RH
D000328:Adult; D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D001794:Blood Pressure / Q000502:physiology; D003097:Collateral Circulation / Q000502:physiology*; D017023:Coronary Angiography / Q000379:methods; D003326:Coronary Circulation / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000628:therapy; D018919:Neovascularization, Physiologic; D012039:Regional Blood Flow