Patient awareness and renal outcomes in contrast-induced nephropathy: A questionnaire-based analysis

Patient awareness of contrast-induced nephropathy (CIN) remains poorly characterized despite its clinical relevance and established preventive strategies. This cross-sectional study surveyed 300 adults undergoing contrast-enhanced imaging and retrospectively evaluated renal outcomes to examine whether awareness and perceptions of CIN were associated with post-contrast renal-function decline. Among 270 respondents (90% response rate), the mean awareness score was 4.1 ± 2.3, 6.7% developed CIN and mean eGFR decline was 4.2 ± 3.1 mL/min/1.73 m². Higher awareness scores were significantly associated with lower CIN incidence (4.1% vs. 9.3%, p = 0.02) and independently predicted reduced CIN risk after adjustment for baseline eGFR and contrast volume (OR 0.48, p = 0.03). Thus, we show that patient awareness may represent an actionable dimension of renal-risk mitigation and support integration of structured education into contrast-consent pathways.