Contrast-induced nephropathy (CIN) is an iatrogenic pro
blem in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percu
taneous coronary intervention (PPCI). Atrial fi
brillation (AF) may also contri
bute to impaired kidney function. Several factors may contri
bute to the development of CIN. In patients with STEMI, concomi
tant AF is associated with higher in-hospi
tal/follow-up mor
tality and mor
bidity. Therefore, we aimed to investigate the relationship
between AF and CIN developments.
bsSec_2">Methods
In this study, 650 consecutive STEMI patients treated with PPCI were enrolled. Patients with AF at admission who did not achieve a sinus rhythm during 48 h after hospitalization were defined as AF patients. CIN was defined by an increase in serum creatinine by >25% or 0.5 mg/dL within 72 h following contrast media exposure.
bsSec_3">Results
Our patients were divided into two groups based on whether they had AF, and although warfarin usage was different, the other parameters were similar between the groups. When our patients were grouped according to CIN development [group 1: CIN (+), group 2: CIN (−)], creatinine levels prior to PPCI (p = 0.020), estimated glomerular filtration rate (eGFR) prior to PPCI (p < 0.001), left ventricular ejection fraction (LVEF) (p = 0.011), AF (p < 0.001), and warfarin usage (p = 0.016) were different between the two groups. We also performed multivariate logistic regression analyses and found that AF [odds ratio (OR), 6.945; 95% confidence interval (CI), 2.789–17.293; p < 0.001], eGFR (OR, 0.973; 95% CI, 0.957–0.989; p = 0.001), and LVEF (OR, 0.963; 95% CI, 0.935–0.991; p = 0.010) independently predicted CIN development in patients with STEMI.
bsSec_4">Conclusions
The risk factors for CIN are multifactorial and identifying high-risk patients is the most important step for prevention. In addition to traditional risk factors, AF can contribute to CIN development in patients with STEMI.