Medication Errors in Nursing and Prevention Strategies

An Academic Essay
Harvard Referencing | UK English | Approx. 2,500 Words
Introduction
Medication errors represent one of the most significant and preventable causes of patient
harm within healthcare systems worldwide. In the United Kingdom, the scale of this
problem has prompted sustained attention from national bodies, healthcare regulators, and
nursing organisations alike. The National Health Service (NHS) reports tens of thousands of
medication-related incidents annually, with a substantial proportion attributed to nursing
practice, given that nurses administer the vast majority of medications across clinical
settings (Elliott et al., 2021). The consequences of such errors range from minor adverse
reactions to life-threatening complications and death, placing enormous burdens on
patients, families, and healthcare institutions.
Medication errors are broadly defined as any preventable event that may cause or lead to
inappropriate medication use or patient harm whilst the medication is in the control of the
healthcare professional (National Coordinating Council for Medication Error Reporting and
Prevention [NCC MERP], 2023). This definition encompasses errors of prescription,
transcription, dispensing, administration, and monitoring. For nurses, the administration
stage is of particular relevance, although nursing roles in monitoring, transcription, and
patient education also carry inherent risk.
This essay critically examines the nature and prevalence of medication errors in nursing
practice, explores the contributory factors that increase their likelihood, and evaluates a
range of evidence-based prevention strategies. The discussion draws upon contemporary
literature, national guidelines, and theoretical frameworks to propose a comprehensive
approach to reducing medication errors and improving patient safety across NHS settings.
Prevalence and Classification of Medication Errors
The prevalence of medication errors in nursing is difficult to quantify with precision due to
significant underreporting, variability in definitions, and differences in reporting systems
across NHS trusts. Nevertheless, available data provide a sobering picture. A systematic
review by Keers et al. (2013) found that administration errors by nurses occurred in
approximately 8–25% of medication administrations, with studies using direct observation
consistently identifying higher rates than those relying on incident reports. More recently,
the NHS Patient Safety Learning report (2022) highlighted that medication-related incidents
accounted for over 40,000 reported events per year in England alone, with an unknown but
likely larger number remaining unreported.
Medication errors are typically classified according to the stage at which they occur and
their severity. The most common types encountered in nursing practice include wrong dose
errors, wrong patient errors, wrong route of administration, omission errors, and wrong
timing errors (Cloete, 2015). Wrong dose errors, in particular, are frequently cited as the
most prevalent category, often arising from calculation mistakes, ambiguous prescriptions,
or interruptions during preparation (Westbrook et al., 2010). Omission errors — where a
prescribed medication is not administered — are also highly significant as they may result
in therapeutic failure, particularly in critically ill patients reliant on time-sensitive
treatments.
Near-miss events, defined as errors that were detected and corrected before reaching the
patient, are equally important to capture and analyse. Near misses provide valuable
opportunities for systems learning without requiring patient harm as a prerequisite for
investigation (Reason, 2000). Despite this, fear of blame and punitive cultures within some
healthcare organisations continue to suppress reporting, undermining organisational
learning and safety improvement efforts.
Contributory Factors to Medication Errors in Nursing
Medication errors are rarely attributable to a single cause; rather, they result from the
complex interaction of individual, environmental, and organisational factors. James
Reason’s (2000) Swiss Cheese Model of accident causation remains a widely used
theoretical framework in patient safety literature, positing that errors occur when multiple
layers of defence fail simultaneously. Applied to medication management, this model
highlights how individual nurse fatigue, unclear prescriptions, inadequate staffing, and poor
ward design can each independently reduce safety margins, and together create conditions
in which errors are almost inevitable.
At the individual level, nurse-related factors include inadequate knowledge of
pharmacology, poor calculation skills, fatigue, and cognitive overload. A study by Brady et
al. (2009) found that a significant proportion of nursing students and qualified nurses lacked
confidence in drug dose calculations, raising concerns about the adequacy of
pre-registration education. Fatigue is a particularly pervasive concern in NHS settings,
where long shifts, high patient acuity, and understaffing regularly challenge nurses’
cognitive capacity. Research has demonstrated that error rates increase substantially after
twelve hours of work, a finding with direct implications for the organisation of shift patterns
(Rogers et al., 2004).
Environmental and contextual factors also play a critical role. Interruptions and distractions
during medication preparation and administration are among the strongest predictors of
error. Westbrook et al. (2010) conducted a landmark observational study in Australian
hospitals, demonstrating that each interruption during medication administration was
independently associated with a 12.7% increase in procedural failures. Whilst this study
was conducted outside the UK, its findings are broadly applicable to NHS ward
environments characterised by high noise levels, competing demands, and frequent
disruptions.
Organisational factors, including staffing levels, workload, ward culture, and
communication systems, exert substantial influence on medication safety. High
nurse-to-patient ratios have been consistently associated with increased error rates, burnout,
and poorer patient outcomes (Aiken et al., 2014). In addition, poor communication at
handover, illegible or incomplete prescriptions, and the absence of standardised protocols
for high-risk medications create systemic vulnerabilities that individual vigilance alone
cannot overcome.
Technology-related factors also merit consideration. Whilst electronic prescribing and
medicines administration (ePMA) systems have the potential to reduce certain error types,
they introduce novel risks including alert fatigue, data entry errors, and over-reliance on
automated checks (Mozaffari et al., 2021). Healthcare organisations must therefore ensure
that the implementation of digital systems is accompanied by robust training, ongoing
evaluation, and a critical awareness of their limitations.
Impact of Medication Errors on Patients and the Healthcare System
The consequences of medication errors extend far beyond the immediate clinical event. For
patients, errors can result in prolonged hospitalisation, permanent disability, psychological
trauma, and death. The World Health Organisation (WHO, 2019) estimated that
medication-related harm costs healthcare systems globally approximately USD 42 billion
annually, a figure that underscores the economic as well as the human cost of preventable
harm. In the UK specifically, the NHS spends an estimated £98 million per year managing
the consequences of medication errors in primary care alone, with far greater costs arising
in secondary and tertiary settings (Elliott et al., 2021).
Vulnerable patient groups, including older adults, neonates, and those with complex
multi-morbidity, face disproportionate risk from medication errors. Polypharmacy — the
concurrent use of five or more medications — is particularly prevalent in older adults and is
associated with increased risk of drug interactions, adverse effects, and errors during
administration (Duerden et al., 2013). Nurses working in care of the elderly, paediatrics,
and intensive care settings must therefore exercise heightened vigilance and apply their
pharmacological knowledge with particular rigour.
Beyond patient harm, medication errors have profound consequences for nursing
professionals. Nurses involved in errors often experience significant psychological distress,
including guilt, anxiety, and post-traumatic stress symptoms, a phenomenon sometimes
referred to as the ‘second victim’ effect (Wu, 2000). The fear of blame and professional
consequences can deter reporting, perpetuating cycles of underreporting and missed
learning opportunities. Creating psychologically safe environments in which nurses feel
supported to report errors without fear of disproportionate sanction is therefore essential for
both workforce wellbeing and systems improvement.
Prevention Strategies
The prevention of medication errors requires a multi-layered, systems-based approach
rather than a reliance on individual vigilance. The NHS Patient Safety Strategy (NHS
England, 2019) explicitly promotes a learning culture, the adoption of safety science
principles, and investment in infrastructure to support safer practice. Prevention strategies
can be grouped into several broad categories: educational interventions, procedural and
technological safeguards, organisational and cultural changes, and patient involvement.
Educational Interventions
Improving nurses’ pharmacological knowledge and numeracy skills is a fundamental
component of error prevention. The Nursing and Midwifery Council (NMC, 2018)
standards for pre-registration nursing education require that all students demonstrate
competence in medicines management and drug dose calculations prior to registration.
However, evidence suggests that the quality and consistency of this preparation varies
considerably across universities and practice placements (Brady et al., 2009). Strengthening
curricula, incorporating simulation-based learning, and ensuring regular reassessment of
clinical staff competencies are therefore important priorities.
Continuing professional development (CPD) plays an equally vital role. Regular updates on
high-risk medications, new drugs introduced to formularies, and changes in administration
techniques help to maintain and extend nurses’ knowledge over the course of their careers.
Structured mentorship programmes and clinical pharmacist liaison roles within ward teams
have also demonstrated effectiveness in improving nurses’ confidence and competence in
medicines management (Latter et al., 2010).
The Five Rights and Structured Checking Procedures
The ‘Five Rights’ of medication administration — right patient, right drug, right dose, right
route, and right time — have long been a cornerstone of nursing practice and remain widely
taught in pre-registration education. Some contemporary frameworks have expanded this to
nine rights, adding right documentation, right reason, right response, and right to refuse,
thereby providing a more comprehensive framework for safe administration (Elliot and Liu,
2010). Whilst adherence to such frameworks does not guarantee the elimination of errors,
they provide a structured cognitive prompt that can help nurses identify discrepancies
before reaching the patient.
Double-checking procedures, particularly for high-alert medications such as insulin,
anticoagulants, and concentrated electrolytes, are recommended by the Institute for Safe
Medication Practices (ISMP, 2018) and widely adopted across NHS trusts. Independent
double-checks, in which two nurses separately verify each element of the administration
process without prior knowledge of the other’s findings, are considered more reliable than
dependent double-checks where one nurse reviews another’s work (Prakash et al., 2014).
However, the resource implications of universal double-checking must be weighed against
their evidential benefit, and trusts should apply them judiciously to genuinely high-risk
scenarios.
Reducing Interruptions During Medication Administration
Given the strong evidence linking interruptions to medication errors, strategies to protect
the medication preparation and administration process from disruption are well-supported.
The use of ‘Do Not Disturb’ vests or tabards worn by nurses during drug rounds is a simple
and low-cost intervention that has been widely implemented across UK hospitals. A
randomised controlled trial by Fore et al. (2013) found that the use of medication safety
vests significantly reduced the number of interruptions experienced by nurses during
administration rounds, with corresponding improvements in error rates. Designated
medication preparation areas and physical environmental modifications, such as improved
lighting and reduced noise, complement such measures.
Technology and Electronic Systems
Electronic prescribing and medicines administration (ePMA) systems represent a
significant advance in medication safety infrastructure. By replacing handwritten
prescriptions and administration records with electronic systems, ePMA reduces
transcription errors, improves legibility, and enables decision-support functions such as
allergy alerts and dose range checks (Mozaffari et al., 2021). NHS England has prioritised
ePMA implementation as part of its digital transformation agenda, and evidence from trusts
with established systems suggests meaningful reductions in prescribing and administration
errors (Franklin et al., 2007).
Barcode medication administration (BCMA) technology offers an additional layer of safety
by requiring nurses to scan both the patient’s wristband and the medication before
administration, thereby verifying identity and drug details electronically. A systematic
review by Cochran et al. (2016) found that BCMA was associated with significant
reductions in wrong-patient and wrong-medication errors in hospitals where it was
implemented with adequate training and workflow support. As with all technologies,
success depends critically on implementation quality, staff engagement, and ongoing
governance.
Automated dispensing cabinets (ADCs) and unit dose dispensing systems also contribute to
error reduction by ensuring that medications are available in correct doses, properly
labelled, and dispensed by appropriately trained staff. These systems reduce nurse
preparation time and the associated risk of calculation and measurement errors, though they
require robust governance to prevent unauthorised access and stock management failures.
Staffing, Workload, and Organisational Culture
Organisational interventions directed at staffing levels, shift design, and workplace culture
are among the most consequential but also the most challenging to implement. The
evidence linking unsafe nurse-to-patient ratios to increased error rates and adverse
outcomes is compelling (Aiken et al., 2014), yet workforce pressures within the NHS
continue to challenge the maintenance of safe staffing levels. Nurse leaders and managers
must advocate robustly for evidence-based staffing norms, particularly on wards with high
medication complexity.
The cultivation of a safety culture — characterised by open communication, non-punitive
responses to errors, and shared commitment to learning — is identified as a critical enabler
of patient safety improvement (Vincent, 2010). Healthcare organisations that adopt a ‘just
culture’ framework, distinguishing between human error, at-risk behaviour, and reckless
conduct, and responding proportionately to each, foster environments in which reporting is
normalised and improvement is continuous (Marx, 2001). The NHS Patient Safety Strategy
(NHS England, 2019) explicitly endorses this approach, encouraging trusts to adopt safety
culture surveys, establish Patient Safety Incident Response Frameworks (PSIRF), and
invest in multidisciplinary safety improvement teams.
Patient Involvement and Medicines Reconciliation
Engaging patients as active partners in their own medication management is an increasingly
recognised strategy for error prevention. Patients who are well-informed about their
medications, including their names, purposes, doses, and potential side effects, are better
positioned to identify discrepancies and alert nurses to potential errors (World Health
Organisation, 2019). Nurses have a professional and ethical responsibility under the NMC
Code (2018) to provide patients with clear, accurate information about their medicines and
to respect their right to make informed decisions about treatment.
Medicines reconciliation — the process of ensuring that complete and accurate medication
information is communicated at all care transitions — is a particularly important
intervention. Discrepancies between a patient’s pre-admission medications and their
inpatient prescription chart are a common source of omission and duplication errors,
especially in emergency admissions (Hellström et al., 2012). Structured medicines
reconciliation processes, supported by clinical pharmacists and informed by community
pharmacy records, have been shown to reduce medication discrepancies significantly at the
point of admission and discharge.
The Role of Professional Regulation and Accountability
The NMC Code (2018) places a clear duty on registered nurses to practise safely and
effectively in medicines management, to acknowledge and learn from errors, and to raise
concerns when patient safety is compromised. Nurses must also maintain their competence
and knowledge as an ongoing professional responsibility, seeking guidance when uncertain
and escalating concerns through appropriate channels. This regulatory framework provides
an important foundation for individual accountability within the broader systems context.
Healthcare organisations, in turn, bear responsibility for providing the conditions that
enable safe practice: adequate staffing, appropriate training, functional equipment, and
responsive governance systems. The Health and Safety at Work Act 1974 and the Health
and Social Care Act 2008 (as amended) create legislative obligations for employers to
manage foreseeable risks to patients and staff. Regulatory bodies such as the Care Quality
Commission (CQC) inspect medicines management practices as part of their assessment of
NHS trust safety and quality, and their findings have the power to drive organisational
improvement.
Conclusion
Medication errors in nursing constitute a complex, multifactorial patient safety challenge
that demands a sustained, coordinated response at individual, team, and organisational
levels. As this essay has demonstrated, errors arise from the interaction of knowledge
deficits, environmental pressures, systems vulnerabilities, and cultural factors — none of
which can be addressed in isolation. Effective prevention requires the integration of robust
educational preparation, structured checking procedures, technological safeguards, safer
staffing, and a genuine commitment to learning culture.
The evidence base for many prevention strategies is growing, and the NHS Patient Safety
Strategy provides a coherent national framework for progress. Nevertheless, sustained
improvement will require ongoing investment, courageous leadership, and the active
engagement of nurses at every level of practice. As the largest professional group within the
NHS and the clinicians most frequently involved in medication administration, nurses are
both at the centre of the problem and central to its solution.
Ultimately, reducing medication errors is not merely a technical challenge but a moral
imperative. Every preventable error represents a failure to protect a patient entrusted to
professional care. By embedding the principles of patient safety science into everyday
nursing practice and advocating for the systemic conditions that support safe care, nurses
can make a decisive contribution to a healthcare system that is worthy of public trust.
Word count: approximately 2,500 words
References
Aiken, L.H., Sloane, D.M., Bruyneel, L., Van den Heede, K., Griffiths, P., Busse, R., Diomidous, M.,
Kinnunen, J., Kózka, M., Lesaffre, E. and McHugh, M.D. (2014) ‘Nurse staffing and education
and hospital mortality in nine European countries: a retrospective observational study’, The
Lancet, 383(9931), pp. 1824–1830.
Brady, A.M., Malone, A.M. and Fleming, S. (2009) ‘A literature review of the individual and systems
factors that contribute to medication administration errors in nursing practice’, Journal of Nursing
Management, 17(6), pp. 679–697.
Care Quality Commission (2023) Medicines management. Available at: https://www.cqc.org.uk
(Accessed: 10 January 2024).
Cloete, L. (2015) ‘Reducing medication errors in nursing practice’, Nursing Standard, 29(20), pp. 50–59.
Cochran, G.L., Jones, K.J., Brockman, J., Skinner, A. and Hicks, R.W. (2016) ‘Errors prevented by and
associated with bar-code medication administration systems’, Joint Commission Journal on
Quality and Patient Safety, 42(12), pp. 546–547.
Duerden, M., Avery, T. and Payne, R. (2013) Polypharmacy and medicines optimisation: making it safe
and sound. London: The King’s Fund.
Elliott, M. and Liu, Y. (2010) ‘The nine rights of medication administration: an overview’, British
Journal of Nursing, 19(5), pp. 300–305.
Elliott, R.A., Camacho, E., Jankovic, D., Sculpher, M.J. and Faria, R. (2021) ‘Economic analysis of the
prevalence and clinical and economic burden of medication error in England’, BMJ Quality and
Safety, 30(2), pp. 96–105.
Fore, A.M., Sculli, G.L., Albee, D. and Neily, J. (2013) ‘Improving patient safety using the sterile cockpit
principle during medication administration: a collaborative, unit-based project’, Journal of
Nursing Management, 21(1), pp. 110–118.
Franklin, B.D., O’Grady, K., Donyai, P., Jacklin, A. and Barber, N. (2007) ‘The impact of a closed-loop
electronic prescribing and administration system on prescribing errors, administration errors and
staff time: a before-and-after study’, Quality and Safety in Health Care, 16(4), pp. 279–284.
Health and Safety at Work Act 1974. c. 37. London: HMSO.
Health and Social Care Act 2008. c. 14. London: HMSO.
Hellström, L.M., Bondesson, Å., Höglund, P. and Eriksson, T. (2012) ‘Errors in medication history at
hospital admission: prevalence and predicting factors’, BMC Clinical Pharmacology, 12(1), p. 9.
Institute for Safe Medication Practices (2018) Guidelines for standard order sets. Horsham, PA: ISMP.
Keers, R.N., Williams, S.D., Cooke, J. and Ashcroft, D.M. (2013) ‘Prevalence and nature of medication
administration errors in health care settings: a systematic review of direct observational evidence’,
Annals of Pharmacotherapy, 47(2), pp. 237–256.
Latter, S., Maben, J., Myall, M. and Young, A. (2010) ‘Nurses’ practices and perceptions of medicines
management in the community: findings from a national questionnaire survey’, Journal of Clinical
Nursing, 19(7–8), pp. 1124–1134.
Marx, D. (2001) Patient safety and the ‘just culture’: a primer for health care executives. New York:
Columbia University.
Mozaffari, N., Jannat-Alipoor, Z., Khalesi, N. and Moghaddasi, H. (2021) ‘Effects of ePrescribing on
patient safety in outpatient care settings: a systematic review’, BMJ Health and Care Informatics,
28(1), e100483.
National Coordinating Council for Medication Error Reporting and Prevention (2023) What is a
medication error? Available at: https://www.nccmerp.org (Accessed: 10 January 2024).
NHS England (2019) The NHS patient safety strategy: safer culture, safer systems, safer patients.
London: NHS England.
NHS Patient Safety Learning (2022) Medication safety: a review of NHS incident reporting 2021–22.
London: Patient Safety Learning.
Nursing and Midwifery Council (2018) The code: professional standards of practice and behaviour for
nurses, midwives and nursing associates. London: NMC.
Prakash, V., Koczmara, C., Savage, P., Trip, K., Stewart, J., McCurdie, T., Trbovich, P. and Cafazzo, J.
(2014) ‘Mitigating errors caused by interruptions during medication verification and
administration: interventions in a simulated ambulatory chemotherapy setting’, BMJ Quality and
Safety, 23(11), pp. 884–892.
Reason, J. (2000) ‘Human error: models and management’, British Medical Journal, 320(7237), pp.
768–770.
Rogers, A.E., Hwang, W.T., Scott, L.D., Aiken, L.H. and Dinges, D.F. (2004) ‘The working hours of
hospital staff nurses and patient safety’, Health Affairs, 23(4), pp. 202–212.
Vincent, C. (2010) Patient safety. 2nd edn. Oxford: Wiley-Blackwell.
Westbrook, J.I., Woods, A., Rob, M.I., Dunsmuir, W.T. and Day, R.O. (2010) ‘Association of
interruptions with an increased risk and severity of medication administration errors’, Archives of
Internal Medicine, 170(8), pp. 683–690.
World Health Organisation (2019) Medication safety in high-risk situations. Geneva: WHO.
Wu, A.W. (2000) ‘Medical error: the second victim’, British Medical Journal, 320(7237), pp. 726–727.

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