Serum Cystatin C as a Marker of Renal Function in Critically Ill Patients With Normal Serum Creatinine

AuthorMohammad Mahdi Sagheben
AuthorSoha Namazien
AuthorBita Geramizadehen
AuthorAmin Karimzadehen
AuthorMohammad Bagher Oghazianen
AuthorIman Karimzadehen
OrcidIman Karimzadeh [0000-0002-8956-4528]en
Issued Date2014-03-01en
AbstractBackground: Serum creatinine as a classic marker of renal function has several limitations in the detection of renal dysfunction. Objectives: This study assessed the validity of serum cystatin C as a marker of renal function in critically ill patients with normal serum creatinine. Patients and Methods: Eighty adult patients referred to intensive care units with serum creatinine levels < 1.5 mg/dL and without hemodynamic instability were chosen and their serum creatinine and cystatin C levels were measured. A 24-hour urine sample was collected to calculate creatinine clearance (Ccr). Renal dysfunction was defined as Ccr < 80 mL/min/1.73 m2. Results: There were significant correlations between measured Ccr and 1/serum creatinine (R = 0.51, P < 0.001) and 1/serum cystatin C (R = 0.25, P = 0.028). The difference between false negative rates of serum creatinine (93.33%) and cystatin C (80%) in the detection of renal dysfunction was significant (P = 0.032). Receiver operating characteristic curve analysis illustrated that area under the curve of serum creatinine and cystatin C for detecting renal dysfunction were 0.711 and 0.607, respectively; however, this difference was not significant (P = 0.222). Conclusions: Our data demonstrated that serum cystatin C is not superior to serum creatinine in the early detection of renal dysfunction in critically ill patients.en
DOIhttps://doi.org/10.5812/numonthly.15224en
KeywordCritically Illen
KeywordPatientsen
KeywordCreatinineen
KeywordCystatin Cen
KeywordAcute Kidney Injuryen
PublisherBrieflandsen
TitleSerum Cystatin C as a Marker of Renal Function in Critically Ill Patients With Normal Serum Creatinineen
TypeResearch Articleen

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