During the neonatal period, there is physiological immaturity of organs, systems and metabolic pathways that influences the pharmacokinetics and pharmacodynamics of administered drugs, the dosage of which should be constantly amended, considering the progressive increase in weight and the maturation of the elimination pathways. In this article, we analyse the main pharmacokinetic aspects (absorption, distribution, metabolism and excretion) that exist during the neonatal period, to offer a description of the physiological background for variability in pharmacological dosing.

Introduction Platinum compounds, which are considerably effective for the treatment of childhood malignancies, have significantly contributed to the increase in long-term survival of children with cancer. Unfortunately, children receiving cisplatin-based chemotherapy have been known to be at risk for severe disabling adverse effects, such as nephrotoxicity. Methods A literature research of the MEDLINE PubMed database was conducted to identify articles published between 1980 and 2019 reviewing “Cisplatin AND mannitol.” Results The primary pharmacodynamics and clinical characteristics of cisplatin were described, focusing on its renal toxic effects and potential preventive strategies, in order to improve clinical outcomes among children with cancer aged 1 to 14 years. Currently, selecting either hydration alone or hydration plus mannitol for preventing nephrotoxicity has been controversial considering the lack of guidelines to provide treatment recommendations both among adults and children. Conclusions Appropriate knowledge regarding the pharmacokinetics and toxicological profile of cisplatin may help physicians prevent renal toxicity. Unfortunately, published data regarding the nephroprotective utility of adding mannitol appear to be inconclusive. As such, appropriate hydration remains the main fundamental strategy for reducing the risk of cisplatin-induced nephrotoxicity. Considering the increasing number of children safely cured of their tumours, it is imperative that those treated with cisplatin receive the most appropriate nephroprotective strategy for reducing the negative impact of platinum compounds on quality of life.

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