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Chinese Journal of Diagnostics(Electronic Edition) ›› 2014, Vol. 02 ›› Issue (04): 279-284. doi: 10.3877/cma.j.issn.2095-655X.2014.04.009

Special Issue:

• Clinical Study • Previous Articles     Next Articles

The diagnostic value of the ratio of contrast medium volume to estimated glomerular filtration rate in contrast-induced nephropathy diabetics patients

Lei Liu1, Li Shi1,(), Yiming Zhang1, Yanfu Wang2, Xinjian Li1, Qingxian Li2   

  1. 1. Department of Nephrology, Affiliated Hospital of Jining Medical College, Jining 272029, China
  • Received:2014-06-15 Online:2014-11-26 Published:2014-11-26
  • Contact: Li Shi
  • About author:
    Corresponding author: Shi Li, Email:

Abstract:

Objective

To investigate the incidence of contrast-induced nephropathy(CIN) in patients undergoing percutaneous coronary intervention(PCI) and assess the predictive role of the ratio of contrast medium volume to estimated glomerular filtration rate (CMV/eGFR) in super-elderly diabetic patients undergoing elective PCI who developed CIN.

Methods

Eight hundred and seventy-five PCI patients were retrospectively collected in Affiliated Hospital of Jining Medical University.Patients were divided into CIN group and non-CIN group based on the presence of CIN.Date of the two groups were compared concerning sex, age, smoking, hypotension, LVEF, hemoglobin, LDL-C, glucose, history of hypertension and type 2 diabetes, serum creatinine and eGFR pre-PCI, serum creatinine and eGFR post 48 h-PCI.Risk factors for CIN were analyzed by logistic regression statistical model.

Results

Among eight hundred and seventy-five patients, forty-two patients experienced CIN (4.8%). The disease incidence of male, hypertention, type 2 diabetes, hyperlipidemia, smoking, hypotentino, anemia, myocardial infarction with shock was 65.71%, 54.86%, 37.26%, 22.51%, 34.17%, 16.80%, 4.20%, 8.91%, respectively.In the other two groups, the patients with the super-elderly (age≥70y) (33.33%, 19.33%, χ2=4.902, P<0.05), type 2 diabetes(52.38%, 36.49%, χ2=4.317, P=0.05), smoking(50.00%, 33.37%, χ2=4.914, P<0.05), with hypotention(28.57%, 16.21%, χ2=4.374, P<0.05), myocardial infarction combined with shock(19.05%, 8.40%, χ2=5.579, P<0.05), LVEF[(36.46±9.27)%, (43.62±3.46)%, t=2.398, P<0.05], and larger contrast medium volume[(154.5±95.3)mL, (115.04±49.63)mL, t=2.069, P<0.05] were proned to CIN.eGFR was lower in CIN[(72.50±15.06)ml/(min·1.73m2), (108.55±21.7)ml/(min·1.73m2), t=7.220, P<0.05]. There were significant differences between the two group in CMV/eGFR[(2.19±1.30), (1.01±0.40), t=-3.439, P<0.05]. Logistic regression analysis showed that age ≥70y(RR=5.27, P<0.05), type 2 diabetes(RR=9.87, P<0.05), LVEF(RR=7.35, P<0.05), pre-PCI eGFR(RR=4.12, P<0.05), myocardial infarction with shock(RR=6.75, P<0.05), CMV/eGFR(RR=13.45, P<0.05)were the risk factors for CIN. ROC analysis indicated that a CMV/eGFR of more than 1.5 was a predictor of CIN.The sensitivity and specificity for CIN of CMV/eGFR of more than 1.5 was 72.50% and 84.00%, respectively.

Conclusions

It is very important to estimate risk factors of patients before PCI.The super-elderly diabetic patients are proned to CIN.The CMV/eGFR ratio could be a valuable predictor for CIN in super-elderly diabetic patients after elective PCI.

Key words: Percutaneous coronary intervention, Contrast-induced nephropathy, Contrast medium volume, Estimated glomerular filtration rate, Super-elderly, Diabetes

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