BNS Section 8: Medication Administration

Section Overview

Medication administration is one of the highest-risk activities in nursing practice. Medication errors — including wrong drug, wrong dose, wrong patient, wrong route, and wrong time — occur thousands of times daily in U.S. healthcare settings and represent a leading cause of preventable patient harm. The BSN nurse’s responsibility extends beyond the mechanical act of giving a drug: it encompasses clinical reasoning about appropriateness, patient verification, pharmacokinetic knowledge, monitoring for therapeutic effect and adverse reactions, and patient education.

This section covers the six rights of medication administration, routes and techniques, high-alert medication categories, medication reconciliation, error prevention, and the nurse’s obligations when an error occurs. These skills are foundational to every clinical rotation and are tested heavily on the NCLEX-NG.

Learning Objectives

By the end of this section, students will be able to:

Apply the six rights of medication administration to verify every medication before administration. (Bloom’s: Apply)
Perform safe medication administration by the oral, topical, subcutaneous, and intramuscular routes using correct technique. (Bloom’s: Apply)
Identify common high-alert medications and describe the additional safety checks required before administration. (Bloom’s: Understand)
Perform medication reconciliation and identify discrepancies that require provider clarification. (Bloom’s: Analyze)
Recognize and respond to adverse drug reactions, allergic reactions, and medication errors according to facility protocol. (Bloom’s: Analyze)
Educate patients about their medications including purpose, dose, timing, side effects, and when to seek further care. (Bloom’s: Apply)

The Six Rights of Medication Administration

Every medication administration event begins with systematic verification of the six rights. These checks are non-negotiable and must be performed at the medication administration record (MAR) and at the bedside immediately before administration.

Right	What the Nurse Verifies
Right Patient	Two unique patient identifiers (name + date of birth, or name + medical record number); scan barcode if BCMA system available
Right Medication	Drug name matches the MAR; confirm generic and brand names; never assume based on label appearance
Right Dose	Calculated dose matches the ordered dose; verify high-risk calculations with a second nurse
Right Route	Ordered route is appropriate for the drug and the patient’s current condition; verify the patient can swallow before giving oral medications
Right Time	Within the acceptable administration window (typically ±30 minutes of scheduled time; ±60 minutes for non-time-critical medications per facility policy)
Right Documentation	Document after administration, not before; include time, dose, route, and patient response to PRN medications

Some institutions teach an expanded model — the 8 Rights or 10 Rights — that adds Right Reason, Right Assessment, Right to Refuse, and Right Education. Regardless of the model used, the nurse is legally and professionally responsible for every medication administered.

Pre-Administration Assessment

Before administering any medication, the nurse must verify:

Allergies — compare the patient’s allergy list against the medication; if there is a known allergy or sensitivity, hold the medication and notify the provider
Vital signs — check relevant parameters (e.g., BP before antihypertensives; apical pulse for 60 seconds before digoxin; blood glucose before insulin)
Lab values — relevant for medications with narrow therapeutic indices (e.g., INR before warfarin; potassium before potassium-sparing diuretics or potassium replacement)
Current clinical status — assess whether the medication is still appropriate (e.g., hold antihypertensive if patient is hypotensive)

Medication Routes and Administration Techniques

Oral (PO) Route

The oral route is the most common, most convenient, and safest route of medication administration for patients who can swallow safely.

Key technique points:

Assess the patient’s swallowing ability before administering oral medications; if dysphagia is suspected, obtain a swallow screen or speech-language pathology consult before proceeding
Offer a full glass of water (at least 60–90 mL) with most oral medications to facilitate passage through the esophagus and aid absorption
Remain at the bedside until the patient has swallowed the medication; do not leave medications at the bedside unless specifically ordered and appropriate (e.g., patient-controlled nitroglycerine)
Never crush, split, or open enteric-coated, sustained-release, extended-release, or sublingual tablets unless there is an explicitly approved crushing/splitting list from pharmacy

Sublingual (SL) and Buccal Routes

Sublingual: Place medication under the tongue; instruct the patient not to swallow or chew; drug absorbs directly into the bloodstream via sublingual vasculature (e.g., nitroglycerin SL)
Buccal: Place medication between the gum and cheek; do not crush or chew

Topical and Transdermal Routes

Apply topical creams and ointments using gloves to protect the nurse from absorption
For transdermal patches: remove and discard the old patch first (document the removal); rotate application sites per the manufacturer’s schedule; write the date, time, and initials on the new patch
Do not apply heat (heating pads, warm compresses) over a transdermal patch — this increases absorption rate and can cause toxicity

Ophthalmic, Otic, and Nasal Routes

Eye drops: Tilt head back; pull lower conjunctival sac down; instill drops into the lower conjunctival sac (not directly on the cornea); apply gentle pressure to the inner canthus (nasolacrimal duct occlusion) for 1–2 minutes to reduce systemic absorption
Ear drops: Straighten the ear canal by pulling the pinna up and back in adults (down and back in children under 3); instill drops; keep the ear tilted for 2–5 minutes
Nasal spray: Tilt head slightly forward; block one nostril; spray while breathing in gently through the open nostril; alternate nostrils per order

Subcutaneous (Subcut) Injections

The subcutaneous route delivers medication into the fatty tissue layer beneath the dermis for sustained absorption. Common medications: insulin, heparin, enoxaparin, certain vaccines.

Needle size: 25–31 gauge; ½–⅝ inch length; 45° angle for thin patients, 90° for most adults
Rotation sites: Abdomen (2 inches from umbilicus), upper outer arms, anterior thighs, upper outer buttocks; rotate sites systematically to prevent lipohypertrophy
Heparin/enoxaparin technique: Do not aspirate (risk of hematoma); do not rub the site after injection; apply light pressure only
Insulin: Never shake the vial (roll cloudy insulin); verify correct type and dose; insulin is a high-alert medication requiring independent double-check

Intramuscular (IM) Injections

The IM route delivers medication directly into muscle tissue for faster absorption than subcutaneous. Common indications: vaccines, certain antibiotics, glucagon, epinephrine.

Site	Maximum Volume	Preferred Use
Vastus lateralis (outer thigh)	2–3 mL (up to 5 mL per ACIP)	Adults and infants; preferred for vaccines
Deltoid	1–2 mL	Adults; vaccines
Ventrogluteal	3–4 mL	Preferred for large-volume IM injections; lowest infection and nerve injury risk
Dorsogluteal	Avoid when possible	Risk of sciatic nerve injury; not recommended

Z-track technique is recommended for all IM injections to prevent medication tracking back through subcutaneous tissue:

Displace the skin 1–1.5 inches laterally from the target site and hold it taut
Insert the needle at 90°; aspirate only if required for the specific medication
Inject the medication slowly (10 seconds per mL)
Withdraw the needle and release the skin simultaneously

NCLEX-Style Practice Questions:

A nurse is preparing to administer a transdermal nitroglycerin patch. The nurse notes that the previous patch was applied 24 hours ago. What should the nurse do first?
- A) Apply the new patch to the same site as the old patch for consistency
- B) Apply the new patch to a new site without removing the old patch
- C) Remove and discard the old patch, then apply the new patch to a different site ✓
- D) Notify the provider before applying any new patch
A nurse is preparing to administer regular insulin subcutaneously. Which action requires the nurse to stop and clarify before proceeding?
- A) The insulin vial has been refrigerated
- B) The patient’s blood glucose is 248 mg/dL
- C) Another nurse has not yet performed an independent double-check of the dose ✓
- D) The patient’s abdomen was used for the previous injection

High-Alert Medications

High-alert medications are drugs that carry a heightened risk of causing significant patient harm when used in error. The Institute for Safe Medication Practices (ISMP) maintains a list of high-alert medications that require enhanced verification procedures.

Common High-Alert Categories in Nursing Practice

Category	Examples	Additional Safety Checks
Anticoagulants	Heparin, warfarin, enoxaparin, apixaban	Verify INR/aPTT before administration; check for bleeding signs; independent double-check for IV heparin drip rates
Insulin	All types	Independent double-check of dose and type; blood glucose correlation; correct pen/vial for the patient
Opioids	Morphine, oxycodone, fentanyl, hydromorphone	Assess respiratory rate, sedation level, and pain score before each dose; antidote (naloxone) accessible
Concentrated electrolytes	Potassium chloride IV, hypertonic saline	Must be diluted before use; never administer concentrated KCl IV push — fatal; independent double-check
Chemotherapy	All agents	Specialized training required; independent double-check; strict protocols per oncology pharmacy
Neuromuscular blocking agents	Succinylcholine, vecuronium	Only in monitored settings; patient must be sedated before administration; causes respiratory paralysis

Medication Reconciliation

Medication reconciliation is the process of comparing the medications a patient was taking before admission (the “home medication list”) against the medications currently ordered during hospitalization, and again at every transition of care (admission, transfer, discharge).

Discrepancies — omissions, duplications, incorrect doses, contraindicated drugs — are identified and resolved with the provider before harm can occur. The nurse’s role in medication reconciliation includes:

Collecting a complete and accurate home medication list at admission, including OTC medications, supplements, and herbal products
Identifying discrepancies between the home list and the MAR and reporting them to the provider
Ensuring that medications held during hospitalization are resumed at discharge if clinically appropriate
Providing the patient with a complete, updated medication list at discharge

Adverse Drug Reactions and Medication Errors

Types of Adverse Drug Reactions

Side effect: A known, predictable, dose-related response that is not the intended therapeutic effect (e.g., constipation with opioids)
Adverse drug reaction (ADR): An unintended and noxious response to a drug at a normally used dose
Allergic reaction: An immune-mediated response; ranges from mild urticaria to life-threatening anaphylaxis
Toxic reaction: A response to an excessive dose; may be from overdose or impaired drug elimination

Anaphylaxis Recognition and Response

Anaphylaxis is a severe, life-threatening systemic allergic reaction. Signs appear within minutes to 2 hours of exposure:

Skin: Urticaria, flushing, angioedema
Respiratory: Bronchospasm, stridor, hoarseness, severe dyspnea
Cardiovascular: Hypotension, tachycardia, dysrhythmia, cardiovascular collapse
GI: Nausea, vomiting, abdominal cramping

Immediate nursing actions:

Stop the causative agent immediately
Call for help / activate rapid response
Administer epinephrine 0.3–0.5 mg IM (auto-injector or 1:1000 solution) to the outer thigh — epinephrine is the first-line and life-saving intervention
Maintain a patent airway; apply supplemental oxygen; prepare for intubation
Establish IV access; administer IV fluid bolus for hypotension
Administer diphenhydramine, corticosteroids, and H2 blockers per order as secondary agents

Medication Errors: Professional and Ethical Obligations

When a medication error occurs — or is discovered before reaching the patient — the nurse is ethically and legally obligated to:

Assess the patient immediately for any adverse effects
Notify the provider and charge nurse promptly
Document objectively what occurred, when it was discovered, what the patient’s response is, and what actions were taken
Complete a facility incident/variance report (this is a quality improvement tool, not part of the medical record)
Participate in root cause analysis if requested, to prevent recurrence

Patient Education for Medications

Effective patient medication education reduces readmission, improves adherence, and prevents adverse events at home. Education should occur at each medication administration opportunity, not only at discharge.

Key teaching points for every medication:

What is this medication for? (purpose in patient-understandable language)
How should I take it? (dose, route, timing, with or without food)
What should I watch for? (most common and most serious side effects)
When should I call the doctor or go to the ER?
What happens if I miss a dose?

Verify understanding using the teach-back method: ask the patient to explain what they understand in their own words. Correct misunderstandings and re-teach as needed before discharge.

Standards Alignment

This section supports the following professional and regulatory frameworks:

AACN Essentials D1, D2, D3, D6, D9: Knowledge for nursing practice; person-centered care; interprofessional partnerships; population health
NCLEX-NG CJMM: Recognize Cues (RC), Analyze Cues (AC), Prioritize Hypotheses (PH), Generate Solutions (GS), Take Action (TA), Evaluate Outcomes (EO)
QSEN: Patient-Centered Care (PCC), Evidence-Based Practice (EBP), Safety (S), Quality Improvement (QI), Informatics (I)
CCNE Standards I, II, III: Professional identity; curriculum outcomes; clinical competency
ACEN Standards 3, 4: Student outcomes; medication administration curriculum content