Chapter 31: Medication Administration and Safety

Medication Administration and Safety on medication administration outlines the critical responsibilities nurses hold in preparing, administering, and evaluating pharmacological therapies across various clinical settings. It begins by establishing the scientific foundation of nursing pharmacology, detailing pharmacokinetics—the absorption, distribution, metabolism, and excretion of drugs—and pharmacodynamics, including therapeutic effects, adverse reactions, toxicities, and medication interactions. The text emphasizes the paramount importance of patient safety, highlighting the seven rights of medication administration and the rigorous three checks process required to prevent medication errors. Significant attention is given to the legal and ethical standards guiding practice, including the handling of controlled substances and the necessity of accurate medication reconciliation during transitions of care. The chapter thoroughly examines dosage calculations, requiring proficiency in the metric system, dimensional analysis, and the ability to compute pediatric dosages based on body weight. A major portion of the content is dedicated to the technical skills required for diverse administration routes, ranging from non-parenteral methods like oral, sublingual, buccal, topical, and inhalation therapies to invasive parenteral techniques. Detailed instructions are provided for preparing and administering injections, with specific guidelines for anatomical site selection—such as the ventrogluteal, vastus lateralis, and deltoid muscles—and the use of the Z-track method for intramuscular injections to prevent tissue irritation. It further explores subcutaneous administration, particularly for insulin and heparin, and outlines safe practices for intradermal testing. The chapter also covers intravenous therapy, explaining complex procedures for large-volume infusions, intravenous bolus or push medications, and piggyback systems. Throughout the discussion, the text integrates lifespan considerations, addressing the unique physiological and developmental needs of pediatric patients and the challenges of polypharmacy and age-related physiological changes in older adults. Finally, the nursing process is applied to medication administration, stressing the need for thorough patient assessment, education on self-administration, and continuous evaluation of therapeutic outcomes.