13.4 Medication Safety, Vaccination, Antimicrobial Stewardship & Time-Critical Medicines
Key Takeaways
- RCSI's medical preparations reading group names the HPRA medicines database, COVID-19, flu and pneumococcal vaccination, HSE medication record templates adapted for the RCSI aptitude test, the drug round tabard, conscious sedation, WHO guidance on antibiotic resistance and on medication safety in high-risk situations, and an Irish Medication Safety Network alert on time-critical medicines.
- The WHO identifies three high-risk situations for medication error: high-risk medicines, high-risk patients and transitions of care, with medicines reconciliation the key defence at transitions.
- Time-critical medicines must be given within a narrow window of the prescribed time because a delayed or omitted dose causes direct harm, with Parkinson's disease medication, insulin, anticoagulants, anticonvulsants and antimicrobials in sepsis the common examples.
- The drug round tabard is a visible do-not-interrupt sign introduced to reduce interruptions and error during medication administration.
- Antimicrobial stewardship applies the Start Smart, Then Focus approach, reviewing every empirical antimicrobial at 24 to 48 hours and narrowing, switching to oral, stopping or continuing with a documented plan.
Medication Safety, Vaccination, Antimicrobial Stewardship & Time-Critical Medicines
RCSI's Medical preparations reading group extends well past dose calculation. It names the HPRA Find a Medicine database, COVID-19, flu and pneumococcal vaccination, HSE medication record templates adapted for the RCSI aptitude test, the drug round tabard and checklist to reduce interruptions and error, conscious sedation, the NMBI 2020 guidance on medication administration, WHO material on antibiotic resistance and on medication safety in high-risk situations, and an Irish Medication Safety Network safety alert on time-critical medicines (September 2025).
Note the shape of that list: it is mostly about systems and safety, not pharmacology. That is the frame to revise in.
Medication Safety in High-Risk Situations
The WHO's medication safety work identifies three intersecting domains of risk. Errors cluster where they overlap.
| Domain | What it covers | Examples |
|---|---|---|
| High-risk medicines | Drugs that cause disproportionate harm when used in error | Anticoagulants, insulin, opioids, concentrated electrolytes such as potassium chloride, sedatives, methotrexate, chemotherapy, antimicrobials |
| High-risk patients | Patients whose physiology or circumstances amplify harm | Older adults, children, renal or hepatic impairment, polypharmacy, cognitive impairment, low health literacy, language barriers |
| High-risk situations | Points in the process where error is most likely | Transitions of care (admission, transfer, discharge), verbal and telephone orders, interruptions, look-alike sound-alike drugs, out-of-hours prescribing, unfamiliar settings |
Transitions of Care and Medicines Reconciliation
The single most productive place to prevent harm is the transition. Medicines reconciliation is the formal process of obtaining a complete and accurate list of a person's current medicines and comparing it against what has been prescribed at each transition, resolving every discrepancy.
For each medicine record the name, dose, route, frequency, and the indication where known, and use at least two sources - the patient or carer, the GP list or summary care record, the pharmacy, the dispensed containers brought in, and the previous discharge letter. Ask specifically about items people forget to mention: inhalers, eye drops, patches, insulin, injections, over-the-counter medicines, herbal remedies and supplements.
At discharge, the reconciled list must state clearly what has been started, stopped, changed and why, and it must be communicated to the patient, the GP and, where relevant, the community pharmacist and public health nurse. Then confirm understanding with teach-back: ask the person to explain their medicines in their own words, rather than asking whether they understand.
Time-Critical Medicines
A time-critical medicine is one where a delayed or omitted dose causes direct, sometimes rapid, patient harm. The Irish Medication Safety Network issued a safety alert on these in September 2025, and RCSI lists it.
| Medicine group | Why the timing matters |
|---|---|
| Parkinson's disease medicines (levodopa and related) | A delay of even an hour can cause severe rigidity, immobility, distress, swallowing difficulty and, at the extreme, neuroleptic malignant-like syndrome. These patients should usually self-administer to their own established schedule where safe, because their timing is individual and not the ward drug-round timing |
| Insulin | Mistimed doses relative to meals cause hypoglycaemia or hyperglycaemia |
| Anticoagulants | Missed doses risk thrombosis; duplicated doses risk bleeding |
| Anticonvulsants | Missed doses risk breakthrough seizures and status epilepticus |
| Antimicrobials in sepsis | Under NCG No. 26 V2, immediately and ideally within 1 hour for possible septic shock or a high likelihood of sepsis, and within 3 hours for possible sepsis without shock |
| Immunosuppressants after transplant | Missed doses risk graft rejection |
| Opioids for established pain | Delay allows pain to re-escalate, after which it is harder to control |
The nursing responsibilities are concrete: identify time-critical medicines on the record, plan the round around them rather than fitting them into it, never let a routine round schedule override them, escalate immediately if the drug is unavailable rather than simply recording an omission code, and document every omission with its reason. A nil-by-mouth order is not automatically a reason to omit - the route needs review, not the drug.
Reducing Interruptions: The Drug Round Tabard
Interruption during medication administration is a well-evidenced cause of error: each interruption increases the probability of a mistake.
The drug round tabard - a brightly coloured, clearly worded vest reading along the lines of "Do not disturb - drug round in progress" - together with a checklist, is a simple intervention shown to reduce interruptions and errors. It works by making the rule visible to colleagues, patients and visitors, so the nurse does not have to defend their concentration conversation by conversation.
Related defences:
- A designated, uncluttered preparation area with good lighting.
- Independent double-checking for high-risk medicines and all paediatric doses, per local policy.
- Never prepare from an unlabelled container, and never administer a medicine someone else has drawn up.
- Look-alike sound-alike vigilance, and segregated storage of concentrated electrolytes.
- Verbal and telephone orders are avoided where possible and, where unavoidable, are written down, read back to the prescriber, confirmed, and signed by the prescriber within the timeframe local policy sets.
The HPRA and Finding Reliable Medicines Information
The Health Products Regulatory Authority (HPRA) is Ireland's regulator for medicines and medical devices. Its Find a Medicine database provides the authorised product information - the summary of product characteristics for professionals and the patient information leaflet - for every medicine licensed in Ireland.
Use it for indications, contraindications, interactions, reconstitution and administration details, storage, and reporting. The HPRA also operates the national adverse reaction reporting system: suspected adverse reactions should be reported, including by nurses and by patients themselves, and reporting does not require certainty that the medicine caused the reaction.
Adult Vaccination
RCSI lists COVID-19, influenza and pneumococcal vaccination.
| Vaccine | Who it is offered to | Nursing points |
|---|---|---|
| Influenza | Offered annually to at-risk groups including older adults, people with chronic conditions, pregnant women, and healthcare workers | The strain composition changes each year, so annual vaccination is required. Healthcare worker uptake protects patients as well as staff |
| Pneumococcal | Offered to at-risk groups including older adults, people with chronic disease and people who are immunocompromised or asplenic | Different products and schedules exist for different groups - check the current immunisation guidelines |
| COVID-19 | Offered per current national recommendations, with boosters for defined groups | Recommendations change; verify against the current HSE and National Immunisation Advisory Committee guidance rather than memory |
General principles: check the indication and any contraindications, take an allergy history, obtain informed consent, confirm the correct product, dose, route and site, observe cold-chain requirements, be prepared to manage anaphylaxis with adrenaline immediately available, document the product, batch number, expiry, site and date, and report adverse events to the HPRA. Offering opportunistic vaccination during an admission is a genuine clinical intervention, not an administrative extra.
Antimicrobial Stewardship and Antibiotic Resistance
Antimicrobial resistance is one of the WHO's defined global health threats. Resistant organisms arise from unnecessary, excessive and poorly targeted antimicrobial use, and once present they spread. Ireland's response runs through the HSE Antimicrobial Resistance and Infection Control (AMRIC) programme.
Start Smart, Then Focus
| Stage | Actions |
|---|---|
| Start Smart | Do not start an antimicrobial without clinical evidence of bacterial infection. Take cultures before the first dose where this causes no substantial delay. Document the indication, dose, route and intended duration or review date on the prescription. Follow the local empirical guideline. Check allergy status accurately - a recorded "penicillin allergy" that was actually childhood nausea narrows options unnecessarily for a lifetime |
| Then Focus | Review at 24 to 48 hours in the light of the clinical response and the microbiology, and make one of five documented decisions: stop, switch to oral, change to a narrower agent, continue with a review date, or move to outpatient parenteral therapy |
NCG No. 26 on sepsis explicitly discusses the unintended consequences of the Sepsis 6 bundle - patients started inappropriately on antimicrobials, patients on therapy not matching local guidance, and empirical therapy never reviewed at 24 to 48 hours. The 2025 split in antimicrobial timing, with three hours permitted for possible sepsis without shock, is itself a stewardship measure.
The nursing contribution is substantial: taking cultures correctly and before the first dose, giving doses on time so courses are effective, prompting the review at 48 hours, questioning intravenous therapy that could be oral, taking an accurate allergy history, completing courses as prescribed, and educating patients about why antibiotics are not given for viral illness.
Conscious Sedation
Conscious sedation uses drugs to produce a depressed level of consciousness in which the patient retains the ability to maintain their own airway and respond purposefully to verbal command. It is widely used for endoscopy, dental procedures, minor surgery and imaging.
The safety boundary that matters: sedation is a continuum, and an individual patient may pass unintentionally from conscious sedation into deep sedation or general anaesthesia. The clinical team must therefore be competent to rescue a patient from one level deeper than intended.
| Phase | Nursing responsibilities |
|---|---|
| Before | Verify informed consent; confirm fasting status; take an accurate allergy, medication and comorbidity history, including obstructive sleep apnoea; record baseline observations; establish IV access; confirm that oxygen, suction, airway equipment, reversal agents and full resuscitation equipment are present and checked; confirm an escort home is arranged |
| During | Continuous monitoring of conscious level, respiratory rate, oxygen saturation, pulse and blood pressure; observe for airway obstruction, hypoventilation and apnoea; a dedicated person monitors the patient and does not also assist with the procedure |
| After | Recovery observations until the patient meets discharge criteria - awake, orientated, stable observations, protective reflexes returned, adequate pain and nausea control; nil by mouth until the gag reflex returns if throat spray was used; written and verbal discharge advice |
Discharge advice after sedation is standard and should be given in writing: for the remainder of the day, do not drive, operate machinery, drink alcohol, sign legal documents or care for dependants alone, and be accompanied home by a responsible adult who can stay with you.
A patient with Parkinson's disease is admitted at 11:00. Their levodopa is due at 12:00, but the ward drug round runs at 14:00 and the pharmacy has not yet supplied the medicine. What should the nurse do?
A patient has been on empirical intravenous co-amoxiclav for 48 hours for a community-acquired pneumonia. They are apyrexial, eating and drinking, and the sputum culture has identified a sensitive organism. What does the Start Smart, Then Focus approach require?
What is the defining clinical feature of conscious sedation, and what safety implication follows from it?