Chapter 1 Introduction to pharmacology
Ian Peate
Aim
The aim of this chapter is to provide the reader with an introduction to therapeutic pharmacology and the key issues surrounding medicines management.
Learning outcomes
After reading this chapter, the reader will be able to:
1 Discuss the importance of patient assessment in association with medicines management
2 Understand the role of the Code and other professional duties
3 Appreciate the importance of the proficiencies of pre‐registration nurse education related to medicines management
4 Acknowledge and respect patient preference
Test your knowledge
1 What is the nursing process?
2 Describe the keys skills that are associated with patient assessment.
3 Discuss the role and function of the Nursing and Midwifery Council.
4 What does medicines optimisation mean?
5 Discuss risk management strategies in medicines management.
Introduction
There has been a vast increase in the use of therapeutic agents for medical treatment. The administration of medicines is a common yet important clinical activity. The way in which a medicinal product is administered can determine whether the patient gains any therapeutic benefit or if they will experience any adverse effects from their medicines. The volume and complexity of medication administration contributes to the actual and potential risk of medication errors, which will have a negative impact on a person's health and wellbeing.
The key requirement of a healthcare provider is to ‘do no harm’, and this is particularly important when the nurse is working with people who have been prescribed medication. The administration of medicines is but one part of the nurse's role; an understanding of pharmacology is essential if the nurse is to provide care that is safe and effective. As well as an understanding of pharmacology, the nurse is also required to work with patients and their families in explaining how to administer the medication, explaining the anticipated effects, the action(s) of the medications and the potential adverse reactions or side effects.
Patient assessment
When a patient is admitted to a healthcare facility (regardless of the setting), an initial assessment must be undertaken which has to include a detailed medication history. Information must be obtained from the patient (and, if appropriate, the patient's family), and information may also be collected from the patient's pharmacy and/or the general practitioner with their permission. In addition, any medications that have been brought in by the patient must be documented and kept in a safe location. At all times, local policy and procedure must be adhered to.
Assessment is the first stage in the planning of care, it is associated with the process of gathering information in order to make decisions about appropriate interventions (Ballantyne, 2015). During the assessment stage, the patient's story is listened to and the nurse–patient relationship is strengthened, ensuring that the patient is truly at the heart of all that is done. The nursing process is a systematic, developing, dynamic approach, that is cyclical in nature, and as such assessment must not be seen as a one‐off activity: it is not linear by nature; it is ongoing.
When assessing needs – and this also relates to assessing needs and the use of medications – data is gathered, analysed and organised, and the data is acted upon as critical thinking skills and the mobilisation of resources are used to achieve goals and outcomes that have been set, when possible, in partnership with the patient (Stonehouse, 2017).
Having undertaken patient assessment, a diagnosis is formulated, a plan of care is devised relating to the needs that have emerged following assessment, care is provided using a holistic approach, and finally all that has been done is evaluated to establish efficacy. See Figure 1.1: a systematic approach to care.
The safety and success of medicines administration is based on ongoing nursing assessment. All healthcare providers have a professional duty to ensure that they offer care that is safe and effective (Nursing and Midwifery Council (NMC), 2018b,2018c). As well as professional obligations, there are also requirements that must be given due diligence in order to ensure that patient safety is paramount. There is much legislation regarding medicines (see Chapter 3), and the nurse must also adhere to the laws of the country in which they are working.
The skills of assessment require the nurse to undertake a physical and psychological assessment of the person's needs. The nurse obtains a patient history and carries out a physical examination (if required)
