Assessing the epidemiology of nephrotoxicity and the role of urinary kidney injury molecule 1 as a biomarker of renal function in hematologic-oncologic patients under vancomycin treatment in Shiraz, Iran

Abstract EN

Background : Nephrotoxicity is a common adverse effect of vancomycin.

However, some aspects of vancomycin nephrotoxicity have not been studied well in the Iranian population.

Serum creatinine as a classic marker of renal function has several limitations in clinical practice.

Objectives : To determine the incidence, time onset, and possible associated factors of vancomycin nephrotoxicity, and compare the patterns and the accuracy of urine kidney injury molecule 1 (KIM-1) with that of serum and urine creatinine during vancomycin treatment.

Methods : A longitudinal study was performed during 9 months from August, 2015 to April, 2016 at three hematology-oncology wardsof theNamaziHospital in Shiraz, Iran.

Patients> 18 years withnodocumentedhistory of acute kidney injury or chronic kidney disease scheduled to receive vancomycin for at least 1 week were recruited.

Required demographic and clinical data of patients were gathered.

Serum, as well as urine creatinine and urine KIM-1, were determined at days 0, 3, 5, 7, 10, and 14 of vancomycin treatment.

Results : Thirteen out of the 52 recruited patients (25%) developed nephrotoxicity, with a mean_standard deviation onset of 11.46 _ 7.56 days.

Furosemide co-administration (odds ratio = 0.126, 95% confidence interval = 0.023-0.694, P = 0.017) was significantly associated with vancomycin nephrotoxicity.

Vancomycin nephrotoxicity resolved spontaneously in about two-fifths (38.46%) of the affected individuals.

Mortality (P = 1) and duration of hospitalization (P = 0.175) were comparable between patients with and without nephrotoxicity.

Urine KIM-1 increased during vancomycin treatment, but its mean values did not differ significantly within (P = 0.070) or between (P = 0.179) patients with and without nephrotoxicity.

Urine KIM-1 accuracy in detecting vancomycin nephrotoxicity was significantly lower than that of serum creatinine at days 5, 7, and 10 of treatment.

Conclusions : Vancomycin nephrotoxicity is common but usually reversible and has readily manageable adverse effect.

Urine KIM-1 was not more accurate than serum or urine creatinine in detecting vancomycin nephrotoxicity in our study population.

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