Clinical journal of oncology nursing · 2019
Pharmacokinetics: Unique Challenges in Blood Monitoring for Oncology Nurses.
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Kawedia Jitesh D, Kalariya Nilesh, Gulbis Alison M, Andersson Borje S, Myers Alan L
Аннотация
BACKGROUND: Pharmacokinetics (PK) is the study of the absorption, distribution, metabolism, and excretion of drugs. Many chemotherapeutic agents have a sensitive PK index, in which a small margin in blood concentrations is the difference between nontherapeutic, therapeutic, and adverse outcomes.
OBJECTIVES: This article will provide an overview of evidence-based approaches to the collection of PK samples, monitoring of PK levels, and the resulting management of patients undergoing PK testing.
METHODS: A case study involving busulfan, an alkylating agent used in the pre-stem cell transplantation setting, will highlight the cross-contamination of samples while a drug is being infused through a central venous catheter with PK sample collection from a proximal peripherally inserted central catheter. The influence of false elevations in drug concentrations on PK-guided dose adjustments will also be emphasized.
FINDINGS: Imprecise blood collections or cross-contamination of samples may lead to inaccurate drug concentration results and, subsequently, undesired low or high drug dosage calculations.
OBJECTIVES: This article will provide an overview of evidence-based approaches to the collection of PK samples, monitoring of PK levels, and the resulting management of patients undergoing PK testing.
METHODS: A case study involving busulfan, an alkylating agent used in the pre-stem cell transplantation setting, will highlight the cross-contamination of samples while a drug is being infused through a central venous catheter with PK sample collection from a proximal peripherally inserted central catheter. The influence of false elevations in drug concentrations on PK-guided dose adjustments will also be emphasized.
FINDINGS: Imprecise blood collections or cross-contamination of samples may lead to inaccurate drug concentration results and, subsequently, undesired low or high drug dosage calculations.