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Chapter 1 of 10

What Is Nursing Today?

Explore what nurses do, where they work, and how the profession has evolved in modern healthcare systems.

15 min readen

1. What Is Nursing Today?

Nursing today is a scientific, person-centered, and team-based profession that focuses on helping people achieve and maintain the best possible health.

A widely used modern definition (adapted from the American Nurses Association and other national bodies) describes nursing as:

> The protection, promotion, and optimization of health and abilities; prevention of illness and injury; facilitation of healing; alleviation of suffering; and advocacy in the care of individuals, families, communities, and populations.

Key shifts in the 21st-century view of nursing:

  • From task-based to evidence-based, outcome-focused practice
  • From only the bedside to diverse settings (community, home, digital/telehealth, public health)
  • From following orders to clinical judgment, leadership, and interprofessional collaboration

As you go through this module, keep asking:

> “How does this nursing role improve patient outcomes and public health?”

You should finish able to describe what nurses actually do in different settings, how different levels of nursing work together, and why nursing is central to safe, high-quality care.

2. Where Do Nurses Work Today?

Nurses now practice across the entire health system, not just hospitals.

Major Practice Settings

  1. Hospitals and Acute Care
  • Medical-surgical units, ICUs, emergency departments, operating rooms, maternity units
  • Focus: acute illness, surgery, trauma, complex monitoring
  1. Community and Public Health
  • Public health departments, community clinics, mobile health units, school health
  • Focus: prevention, health promotion, vaccination, outbreak response, chronic disease management
  1. Primary Care and Outpatient Clinics
  • Family medicine, specialty clinics (cardiology, oncology, mental health)
  • Focus: ongoing care, early detection, chronic disease follow-up, patient education
  1. Long-Term, Residential, and Home Care
  • Nursing homes, assisted living, rehabilitation centers, home health
  • Focus: support for daily living, rehabilitation, chronic and end-of-life care
  1. Non-Traditional and Emerging Settings
  • Telehealth/virtual care, occupational health, correctional facilities, humanitarian/NGO work, research, quality improvement, informatics
  • Focus: access to care, safety, systems improvement, data-driven practice

Visual description:

Imagine a network map with the patient at the center. Around them are circles labeled Hospital, Home, Clinic, Community, Virtual Care, Public Health, and Research. Nurses are the connectors across all these circles, helping information, support, and care flow smoothly.

3. Levels of Nursing: CNA, LPN/LVN, RN, APRN

Modern healthcare uses a team of nursing roles, each with a defined scope of practice (what they are legally and professionally allowed to do). Exact rules vary by country and state/province, but the overall structure is similar in many systems.

1. CNA – Certified Nursing Assistant (or Nursing Assistant / Healthcare Support Worker)

  • Education: Short training program; certification or registration in many regions
  • Supervision: Works under RNs or LPNs/LVNs
  • Typical tasks:
  • Assist with activities of daily living (bathing, dressing, eating, mobility)
  • Take vital signs (depending on jurisdiction)
  • Observe and report changes in patient condition

2. LPN/LVN – Licensed Practical Nurse / Licensed Vocational Nurse

  • Education: Usually 1-year diploma or certificate
  • Supervision: Practice under RNs and physicians (degree of independence varies by jurisdiction)
  • Typical tasks:
  • Administer some medications and treatments
  • Perform basic assessments and wound care
  • Document care; reinforce patient teaching

3. RN – Registered Nurse

  • Education: Typically an associate or bachelor’s degree in nursing; licensure exam required
  • Scope: Broad, independent nursing practice within legal and institutional policies
  • Typical tasks:
  • Full nursing assessment and care planning
  • Clinical judgment, prioritize care, coordinate the team
  • Administer complex medications (e.g., IV), monitor responses
  • Lead patient and family education
  • Participate in quality improvement and evidence-based practice

4. APRN – Advanced Practice Registered Nurse

Includes Nurse Practitioners (NPs), Clinical Nurse Specialists (CNS), Certified Nurse-Midwives (CNMs), and Certified Registered Nurse Anesthetists (CRNAs) in many countries.

  • Education: Master’s or doctoral degree in nursing; advanced certification
  • Scope: Advanced clinical practice; in many jurisdictions, NPs and some other APRNs can diagnose, prescribe medications, and manage treatment plans (autonomously or collaboratively, depending on local law)
  • Typical tasks:
  • Conduct advanced assessments and diagnostics
  • Manage chronic diseases (e.g., diabetes, hypertension)
  • Provide specialized care (e.g., anesthesia, mental health, midwifery)
  • Lead research, policy, and system-level improvements

> Important: Regulation has been evolving quickly. For example, several U.S. states and other countries have expanded NP full practice authority (independent practice) in the last decade to improve access to primary care. Always check the current laws and professional standards for your region.

4. How These Roles Collaborate: A Patient Journey

Follow one patient, Mr. Lee, through the system to see how different nursing roles work together.

Scenario: Post-Surgery Recovery

  1. Hospital – Day of Surgery
  • RN assesses Mr. Lee before surgery, reviews his history, explains the plan, and answers questions.
  • CNA helps him change into a gown, assists with toileting, and checks comfort.
  1. Post-Operative Unit – First Night
  • RN monitors pain, vital signs, and surgical site; adjusts the care plan with the medical team.
  • LPN/LVN (where used) gives some medications, performs wound care, and reports concerns to the RN.
  • CNA helps Mr. Lee walk to the bathroom, records intake/output, and reports if he seems short of breath.
  1. Discharge Planning
  • RN teaches Mr. Lee how to care for his wound, manage pain meds safely, and recognize warning signs.
  • Care coordinator RN arranges home health visits.
  1. Home Health Follow-Up
  • Home health RN visits at home, checks the incision, reviews medications, and coordinates with his primary care provider.
  • CNA/home health aide assists with bathing and mobility, helping prevent falls.
  • NP (APRN) in a primary care clinic adjusts Mr. Lee’s blood pressure meds via an in-person or telehealth visit.

Outcome impact:

  • Early detection of complications
  • Fewer readmissions
  • Better pain control and mobility
  • Higher patient satisfaction

This example shows how each role contributes to safety, comfort, and recovery, and how communication between roles is critical.

5. Core Professional Values in Nursing Today

Across all levels (CNA to APRN), nursing practice is grounded in professional values that are reflected in modern codes of ethics (e.g., from national nursing associations and regulatory bodies).

1. Care and Compassion

  • Seeing the whole person, not just a diagnosis
  • Providing emotional support, presence, and reassurance

2. Advocacy

  • Speaking up for patients’ needs, preferences, and rights
  • Ensuring informed consent, privacy, and respect
  • Challenging unsafe or discriminatory practices

3. Safety and Quality

  • Following evidence-based guidelines and protocols
  • Using clinical judgment to identify early signs of deterioration
  • Practicing infection prevention and control (especially highlighted by COVID-19 since 2020)

4. Professionalism and Accountability

  • Practicing within your scope of practice and competence
  • Documenting accurately, reporting errors and near misses
  • Maintaining continuing education to keep up with current evidence and regulations

5. Equity and Public Health Responsibility

  • Recognizing and responding to health inequities and social determinants of health
  • Participating in vaccination campaigns, screening programs, and health education

These values are not abstract—they guide everyday decisions, from how a CNA speaks to a confused patient to how an APRN designs a community health intervention.

6. Apply It: Matching Roles to Actions

Try this thought exercise. For each action, decide which role(s) could perform it in many current healthcare systems. (Answers can differ by country/state, but think in general terms.)

  1. Action: Adjusting insulin doses for a patient with diabetes based on lab results and guidelines.
  • Which role(s) are most likely responsible? Why?
  1. Action: Helping a patient with dementia eat safely and documenting how much they ate.
  • Which role(s) are most likely involved? What skills are needed?
  1. Action: Leading a quality improvement project to reduce catheter-associated infections on a unit.
  • Which role(s) typically lead this work? Who else do they collaborate with?
  1. Action: Providing detailed pre-operative education, answering questions about risks, and checking understanding.
  • Which role(s) usually do this? How does it affect patient outcomes?

Write brief notes for yourself (2–3 sentences per action) explaining your reasoning, not just the role name. Focus on:

  • Scope of practice
  • Required knowledge and judgment
  • Impact on safety and outcomes

7. Check Understanding: Roles and Scope

Answer the question below, then read the explanation.

Which statement best describes the difference between an RN and an APRN (such as a Nurse Practitioner) in many current healthcare systems?

  1. Both RNs and APRNs can independently diagnose and prescribe medications in all countries.
  2. RNs focus on basic physical care only, while APRNs provide all teaching and coordination.
  3. RNs provide comprehensive nursing care and coordination; APRNs have advanced education and, in many jurisdictions, can diagnose and manage conditions (including prescribing) within their specialty.
  4. RNs only work in hospitals, while APRNs only work in clinics.
Show Answer

Answer: C) RNs provide comprehensive nursing care and coordination; APRNs have advanced education and, in many jurisdictions, can diagnose and manage conditions (including prescribing) within their specialty.

Option 3 is generally correct. **Registered Nurses (RNs)** provide comprehensive nursing care, including assessment, planning, implementation, evaluation, and coordination of care. **Advanced Practice Registered Nurses (APRNs)** complete graduate-level education and advanced certification; in many (but not all) jurisdictions they can diagnose, order tests, and prescribe medications within their scope and specialty. The exact authority varies by country and state, so nurses must always follow current local regulations. Options 1, 2, and 4 are inaccurate or oversimplified.

8. Check Understanding: Settings and Outcomes

Test your understanding of how nursing affects outcomes.

Which example BEST shows how nursing contributes to public health (not just individual patient care)?

  1. An RN adjusts a single patient’s IV rate based on their blood pressure.
  2. A community health nurse organizes a vaccination outreach program in a neighborhood with low immunization rates.
  3. A CNA helps a patient walk safely to the bathroom.
  4. An LPN gives a scheduled oral medication to a patient in a long-term care facility.
Show Answer

Answer: B) A community health nurse organizes a vaccination outreach program in a neighborhood with low immunization rates.

Option 2 is correct because organizing a **vaccination outreach program** targets a whole community, preventing disease and improving population-level outcomes—this is a core public health function. Options 1, 3, and 4 are important for **individual patient safety and comfort**, but they do not primarily illustrate a population-level impact.

9. Flashcards: Key Terms in Modern Nursing

Flip these cards (mentally or with a partner) to reinforce key concepts.

Scope of Practice
The legal and professional boundaries that define what a particular health professional (e.g., CNA, LPN/LVN, RN, APRN) is permitted and competent to do, based on education, licensure, and regulation.
Registered Nurse (RN)
A nurse who has completed an approved nursing program (usually associate or bachelor’s degree) and passed a licensure exam, authorized to provide comprehensive nursing assessment, planning, implementation, evaluation, and coordination of care.
Advanced Practice Registered Nurse (APRN)
A nurse with graduate-level education and advanced certification (e.g., NP, CNS, CNM, CRNA) who provides advanced clinical care; in many jurisdictions can diagnose, order tests, and prescribe within their specialty.
Advocacy in Nursing
Actively protecting and promoting the rights, preferences, and safety of patients, families, and communities—often by speaking up, clarifying information, and challenging unsafe or unfair practices.
Patient Outcomes
Measurable results of healthcare, such as symptom control, complication rates, hospital readmissions, mortality, functional status, and patient satisfaction—nursing care has a well-documented impact on these outcomes.
Public Health Nursing
A field of nursing focused on populations and communities rather than only individuals, emphasizing prevention, health promotion, and addressing social determinants of health.

10. Quick Reflection: Your View of Nursing Today

Take 2–3 minutes to respond to these prompts in your notes:

  1. Before this module, how would you have defined nursing? What images or tasks came to mind?
  2. Now, how would you describe nursing in one concise sentence to a friend who thinks nurses only “follow doctor’s orders”?
  3. Identify one nursing role (CNA, LPN/LVN, RN, APRN) that interests you most. Why? Which settings and values connected with you?
  4. Name one way nursing clearly affects patient outcomes or public health that you didn’t fully appreciate before.

This reflection helps you connect the content to your own understanding and possible career interests.

Key Terms

Advocacy
The act of supporting and speaking up for patients’ and communities’ rights, needs, and preferences within the healthcare system.
Public Health
The field focused on protecting and improving the health of populations and communities through prevention, health promotion, policy, and organized efforts.
Patient Outcomes
The measurable changes in health or quality of life that result from healthcare services, such as symptom improvement, reduced complications, and increased satisfaction.
Scope of Practice
The range of responsibilities and activities that a healthcare professional is legally and professionally allowed to perform, defined by law, regulation, and professional standards.
Registered Nurse (RN)
A nurse who has completed an accredited nursing program and licensure exam, authorized to provide comprehensive nursing care, including assessment, planning, implementation, evaluation, and coordination.
Evidence-Based Practice
The integration of the best current research evidence, clinical expertise, and patient values to make decisions about care.
Interprofessional Collaboration
Different health professionals (e.g., nurses, physicians, pharmacists, therapists) working together with patients and families to deliver the highest quality of care.
Certified Nursing Assistant (CNA)
An entry-level nursing support role (also called nursing assistant or healthcare assistant in some systems) that provides basic patient care and assists with activities of daily living under the supervision of licensed nurses.
Advanced Practice Registered Nurse (APRN)
A collectively regulated group of nurses with graduate-level education and advanced clinical training (e.g., Nurse Practitioner, Clinical Nurse Specialist) who provide advanced care and, in many regions, can diagnose and prescribe within their scope.
Licensed Practical Nurse (LPN) / Licensed Vocational Nurse (LVN)
A nurse who has completed a shorter practical nursing program and is licensed to provide basic nursing care under the direction of an RN and/or physician; exact scope varies by jurisdiction.