- Independent: Actions the nurse can take without a direct order (e.g., patient education).
- Collaborative: Actions performed in conjunction with other healthcare team members.
- Dependent: Actions that require a specific order from a prescriber.
4. Evaluation
The final phase is a systematic, ongoing, and dynamic process to determine if the therapeutic goals were met. The nurse must monitor the patient for three specific types of responses to drug therapy:
- Therapeutic responses: The intended beneficial effect.
- Expected responses: Normal side effects or physiological changes.
- Toxic responses: Harmful or adverse effects resulting from excessive medication.
The Ten Rights of Medication Administration
To prevent medication errors, nurses must adhere to the "Ten Rights." This checklist serves as a fundamental safety barrier during the implementation phase:
- Right drug (or Right Medication)
- Right dose
- Right time
- Right route
- Right patient
- Right reason
- Right documentation
- Right evaluation (or Right assessment)
- Right patient education
- Right to refuse
Exam Tip: If a patient exercises their "Right to Refuse," the nurse must respect this decision but must also follow facility policy, which usually involves notifying the healthcare provider and documenting the refusal and the patient's reasoning.
Timely Medication Administration
Medications are not all required at the same level of precision. Timely administration is categorized by the criticality of the drug:
| Category | Description | Administration Window |
|---|
| Time-Critical | Medications where timing is vital (e.g., rapid-acting insulin) | Exact time or within 30 minutes before/after |
| Non-Time-Critical (Frequent) | Prescribed more frequently than daily (up to $q4h$) | Within 1 hour before/after scheduled time |
| Non-Time-Critical (Daily/Weekly) | Daily, weekly, or monthly doses | Within 2 hours before/after scheduled time |
Medication Errors and Prevention
A medication error is a preventable event that can lead to various outcomes, ranging from a "near miss" (the error was caught before reaching the patient) to a "critical incident" (the error caused serious harm).
Common Causes and High-Alert Drugs
Errors can occur at any stage: prescribing, transcribing, dispensing, administering, or monitoring. Certain drugs carry a higher risk of causing severe harm, often referred to as "high-alert" medications, such as anticoagulants, chemotherapeutic agents, and central nervous system drugs. Nurses must also be wary of SALAD/LASA (Sound-Alike, Look-Alike Drugs).
Best Practices for Prevention
To minimize errors, the following clinical habits are essential:
- Use Two Patient Identifiers: Never rely on a room number.
- Avoid Abbreviations: Use full names to prevent confusion.
- Leading and Trailing Zeros:
- Always use a leading zero for decimals (e.g., write 0.25 mg, not .25 mg) to prevent misreading as 25 mg.
- Never use a trailing zero (e.g., write 1 mg, not 1.0 mg) to prevent misreading as 10 mg.
- Verify Orders: If an order is illegible or unclear, do not guess. Contact the prescriber for clarification.
- Medication Reconciliation: Continuously verify and update the patient's medication list during transitions of care, such as admission, transfer, or discharge.
Legal and Ethical Considerations
Professional Standards and Regulation
In Ontario, nursing practice is governed by the Nursing Act, 1991, which authorizes nurses to perform specific "controlled acts". The College of Nurses of Ontario (CNO) sets the standards for practice, including the Medication Practice Standard, which emphasizes authority, competence, and safety.
Nurses are legally accountable for:
- Working within their legal scope of practice, knowledge, and skill.
- Maintaining accurate, clear, and timely documentation.
- Ensuring informed consent is obtained.
Ethical Values
Ethical practice involves more than just following laws; it requires adhering to core values such as client well-being, client choice, privacy, and truthfulness. For example, when a patient refuses a medication, the nurse must balance the duty to provide care with the ethical principle of client choice.
Legal Note: If a nurse's personal ethical principles conflict with a prescribed treatment, the nurse may have the right to refuse care, but they must not abandon the patient. They should request a transfer of care through a supervisor to ensure the patient's needs continue to be met safely.
Accountability and "Just Culture"
When errors occur, modern healthcare utilizes a "Just Culture" approach. This recognizes that systems are often at fault for errors. While individuals are held accountable for repeated errors or negligence, the focus is on remediation and improving the reporting structure to prevent future harm.