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Mohammadreza Naderian
Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran
Medicine & Pharmacology

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The Effect of Hyperuricemia on the Rate of Contrast-Induced Nephropathy in Patients with Coronary Angiography Hossein Vakili; Sara Chaghazardi; Isa Khaheshi; Mohammadreza Naderian
International Journal of Cardiovascular Practice Vol. 1 No. 3 (2016)
Publisher : Publisher: Shahid Beheshti University of Medical Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21859/ijcp-010305

Abstract

Introduction: There is little information about the relationship between hyperuricemia and contrast induced nephropathy. The present study aimed to evaluate the relationship between hyperuricemia and contrast induced nephropathy among patients, who had undergone coronary angiography.Methods: In the current study, 200 consecutive patients with coronary artery disease, who underwent coronary angiography in Modarres hospital, were enrolled. According to the available data, the upper limit normal level of uric acid was defined as 7 mg/dl in males and 6.5 mg/dl in females. By increasing level of serum creatinine to 0.5 mg/dl (or 25% enhancement) from basic level of creatinine during 48 hours of introduction of contrast agent, diagnosis of Contrast Induced Nephropathy (CIN) was established. The relationship between hyperuricemia and CIN was then assessed.Results: There is a significant difference between normouricemic patients and hyperuricemic patients, in aspect of weight (P = 0.011) and uric acid (P = 0.001); however, other quantitative and qualitative variables including age, volume of contract agent, creatinine level after angiography, hemoglobin level, gender, arterial access type, number of involved vessels, were insignificant between the two groups (P > 0.05). Moreover, as an essential finding, CIN was shown in 9% of normouricemic patients and 10% of hyperuricemic  patients with no significant difference between the two groups (P = 0.6).Conclusions: Our study suggests that hyperuricemia may not significantly increase the rate of the contrast-induced nephropathy in patients, who had undergone angiography
Impact of Lesion Length on Functional Significance in Intermediate Coronary Lesions Morteza Safi; Isa Khaheshi; Vahid Eslami; Mohammad Mehdi Beheshtian; Mohammadreza Naderian
International Journal of Cardiovascular Practice Vol. 2 No. 3 (2017)
Publisher : Publisher: Shahid Beheshti University of Medical Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21859/ijcp-020301

Abstract

Introduction: The present study aimed at assessing the role of lesion length in predicting Fractional Flow Reserve (FFR) value for physiological evaluation of intermediate coronary lesions.Methods: In the current study, 68 patients with 83 coronary lesions were enrolled. All of the patients in this study underwent routine coronary angiography, according to appropriate indications. To evaluate physiologically significant intermediate coronary stenosis (defined between 40% and 70% on visual estimation), the Fractional Flow Reserve (FFR) study was performed and the Quantitative Coronary Angiography (QCA) data were also assessed for measurement of lesion length. The correlation between QCA data and FFR values was also examined.Results: Eighty-three lesions were evaluated from 68 patients. Stenosis was considered physiologically significant when FFR was lower than 0.75. The FFR was significant in twelve lesions (14.5%). There was a negative correlation between FFR value and lesion length (r = -0.294 and P = 0.013). Moreover, lesion length in physiologically significant FFR group (21.07  ± 6.9) was greater than that of the non-significant FFR group (15.23 ± 6.5) (P value < 0.05). Furthermore, the correlation between QCA data and FFR values was also investigated, yet, there was only a positive correlation between FFR and Minimum Luminal Diameter (MLD) values (r = 0.248 and P value = 0.04). The Receiver Operating Characteristic (ROC) curve analysis for predicting the significant FFR value demonstrated that a lesion length greater than 17.5 mm was the best cut-off point for prediction of the significant FFR value with acceptable sensitivity and specificity of 83.3% and 68.8%, respectively.Conclusions: There is a negative correlation between lesion length and FFR value in intermediate coronary lesions. In addition, a lesion length greater than 17.5 mm is the best cut- off point for prediction of significant FFR values.
Co-Authors Hossein Vakili Isa Khaheshi Isa Khaheshi Mohammad Mehdi Beheshtian Morteza Safi Sara Chaghazardi Vahid Eslami