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Clinical pharmacology of hexachlorophene in newborn infants
Insights
Hexachlorophene (HCP) bathing in Neonatal Intensive Care Units during staphylococcal epidemics showed infants with low birth weight, prematurity, or skin abrasions were at risk for elevated HCP levels. HCP levels can persist for days, posing toxicity risks.
Area of Science:
- Neonatal Medicine
- Infectious Disease Control
- Dermatology
Background:
- Staphylococcal infections pose significant risks in Neonatal Intensive Care Units (NICUs).
- Hexachlorophene (HCP) bathing was implemented as a measure during epidemics.
- Understanding HCP absorption and toxicity in neonates is crucial for patient safety.
Purpose of the Study:
- To evaluate the efficacy and safety of hexachlorophene (HCP) bathing during staphylococcal epidemics in a NICU.
- To identify risk factors for elevated blood HCP concentrations in neonates.
- To characterize the pharmacokinetics of HCP absorption in vulnerable infant populations.
Main Methods:
- Retrospective analysis of infants bathed with hexachlorophene (HCP) soap during staphylococcal outbreaks.
- Identification of neonates with elevated blood HCP concentrations.
- Assessment of infant characteristics (weight, gestational age, skin condition) and correlation with HCP levels.
- Pharmacokinetic analysis including half-life (T 1/2) and time to peak concentration.
Main Results:
- Infants weighing <1,200 gm, with postconceptional age <35 weeks, or extensive skin abrasions were at highest risk for elevated blood HCP.
- The elimination half-life (T 1/2) of HCP ranged from 6.1 to 44.2 hours, following first-order kinetics.
- Peak blood HCP concentrations occurred 6–10 hours post-bathing. One infant with liver disease developed HCP toxicity symptoms at 4,350 ng/ml.
Conclusions:
- Hexachlorophene (HCP) bathing poses absorption risks in high-risk neonates, necessitating careful monitoring.
- Prematurity, low birth weight, and skin integrity are critical factors influencing HCP blood levels.
- Clinical monitoring for HCP toxicity is essential, particularly in infants with underlying conditions like liver disease.
Abstract:
Bathing with soap containing hexachlorophene was instituted during two major staphylococcal epidemics in a Neonatal Intensive Care Unit. Infants who weighed less than 1,200 gm, those with a postconceptional age of less than 35 weeks, and those with large areas of abraded skin were at highest risk to achieve elevated blood HCP concentrations. T 1/2 of HCP ranged from 6.1 to 44.2 hours and appeared to follow first order kinetics. Time of peak blood concentrations of HCP following a bath ranged from 6 to 10 hours. One infant with liver disease achieved a concentration of HCP of 4,350 ng/ml after seven baths and developed clinical symptoms consistent with HCP toxicity.