In our study, we aimed to investigate how whole blood viscosity (WBV) affects the development of contrast-induced nephropathy (CIN) in patients undergoing percutaneous coronary intervention (PCI).

In our study, 500 patients who applied to the cardiology clinic and underwent PCI for elective procedure, ST segment elevation myocardial infarction (STEMI), and non-STEMI were prospectively included. Before the procedure, we calculated WBV using the formula [(0.12 × hematocrit) + (0.17 × (total protein - 2.07)]. We defined CIN as the absolute (≥0.5 mg/dl) or relative increase (≥25%) in serum creatinine 48-72 h after exposure to a contrast agent compared with baseline serum creatinine values.

Inclusion Criteria:

• patients between ages 18 and 90
• underwent PCI in our hospital between

Exclusion Criteria:

• Patients with chronic kidney disease (CKD) who underwent hemodialysis or peritoneal dialysis
• Patients who underwent to coronary bypass surgery within 48 h were excluded from the study.

The study started with the approval of the local ethics committee. Five hundred patients between ages 18 and 90 who underwent PCI in our hospital between July 10, 2017, and October 31, 2017, were prospectively included. Informed consent forms were obtained from the patients. Patients with chronic kidney disease (CKD) who underwent hemodialysis or peritoneal dialysis for this reason and patients who underwent to coronary bypass surgery within 48 h were excluded from the study.