• Mohammad Ismail, Sana Aziz, Sidra Noor, Iqbal Haider, Faryal Shams, Inamul Haq, Faiza Khadim, Qasim Khan, Fahadullah Khan, and Muhammad Asif.
• Department of Pharmacy, University of Peshawar, Khyber Pakhtunkhwa, Pakistan. Electronic address: ismailrph@upesh.edu.pk.
• J Crit Care. 2017 Aug 1; 40: 243-250.

PurposeTo investigate frequencies, levels, clinical relevance and predictors of potential drug-drug interactions (pDDIs) in pediatric intensive care unit (PICU).MethodsCase notes of 411 patients were reviewed for pDDIs through Micromedex. Frequencies, levels and clinical relevance of pDDIs were reported. Logistic regression was applied to calculate the odds-ratios for predictors of pDDIs.ResultsWe recorded pDDIs in 59.4% patients. Major-pDDIs were found in 34.5% patients. Total 990 pDDIs were identified, of which, 37.8% were of moderate-severity and 30.6% of major-severity. Patient's case notes of top-ten pDDIs showed presence of signs/symptoms such as fever, jaundice, vomiting, anorexia, tachycardia, drowsiness, & lethargy; and abnormalities in labs such as total leukocytes count, blood urea nitrogen, alanine aminotransferase, & potassium-level. Odds of exposure to major-pDDIs were significantly higher in patients aged 6-12years (p=0.008); hospital stay of ≥7days (p=0.05); and ≥11 prescribed medicines (p<0.001).ConclusionSubstantial numbers of patients in PICU are exposed to pDDIs. Major-pDDIs are of particular concern. Timely identification of pDDIs, preferably with computerized source, is crucial point for their management. Monitoring of clinically relevant parameters and identification of various predictors are needed to minimize or prevent the associated negative consequences of pDDIs.Copyright © 2017 Elsevier Inc. All rights reserved.

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