A registered nurse can independently assess patients, administer medications, start IVs, draw blood, perform wound care, interpret lab results, develop care plans, and coordinate treatment across an entire healthcare team. The scope is broad: RNs work everywhere from hospital bedsides and operating rooms to schools, clinics, and patients’ homes. What sets them apart from other nursing roles is the authority to make clinical judgments, act on those judgments, and lead the care process from start to finish.
Independent Clinical Tasks
RNs carry out a wide range of procedures on their own, without needing a physician’s direct order. These include drawing blood from veins and arteries, administering immunizations and skin tests, performing physical assessments, and monitoring vital signs. When something looks abnormal, an RN has the authority to initiate emergency procedures, escalate care, or refer the patient to a specialist.
Beyond hands-on procedures, RNs independently manage patient safety, comfort, personal hygiene, and infection prevention. They also delegate and supervise tasks carried out by licensed practical nurses, nursing assistants, and other support staff. If a nursing assistant reports a change in a patient’s condition, the RN is the one responsible for deciding what happens next.
Physician-Directed Tasks
Some of what an RN does requires a physician’s order. Administering prescription medications, whether by mouth, injection, IV, or feeding tube, falls into this category. So does carrying out specific treatment plans for disease management or rehabilitation. The physician decides what to prescribe; the RN is responsible for administering it safely, monitoring for side effects, and flagging problems.
In many healthcare settings, RNs also carry out what are called standardized procedures. These are protocols developed collaboratively by nurses, physicians, and administrators that allow RNs to perform certain medical functions, like adjusting a treatment regimen based on specific patient signs, without calling the doctor each time. A standardized procedure is typically required whenever a task involves diagnosing a condition, prescribing a treatment, or penetrating tissue.
Leading the Nursing Process
The core of an RN’s role follows a five-step framework: assessment, diagnosis, planning, implementation, and evaluation. This is the structure that shapes every patient interaction.
- Assessment: Collecting and analyzing data about a patient’s condition. This goes well beyond taking a blood pressure reading. RNs evaluate physiological, psychological, spiritual, economic, and lifestyle factors to build a full clinical picture.
- Diagnosis: Making a clinical judgment about how the patient is responding to illness or treatment. A nursing diagnosis might identify not just that a patient is in pain, but that the pain is causing anxiety, poor nutrition, or family conflict, or that immobility creates a risk for respiratory infection.
- Planning: Setting measurable short-term and long-term goals, then documenting them in a care plan that the entire healthcare team can follow.
- Implementation: Carrying out the care plan, ensuring continuity whether the patient is being treated in the hospital or preparing for discharge.
- Evaluation: Continuously reassessing whether the care plan is working, and modifying it when it isn’t.
This process is what distinguishes RNs from licensed practical nurses (LPNs). LPNs contribute by taking vital signs and gathering information, but RNs are responsible for interpreting that data, formulating the nursing diagnosis, and building the care plan. LPNs generally carry out tasks within an existing plan; RNs create and revise the plan itself.
What RNs Do in Critical Care
In intensive care units and other high-acuity settings, the RN’s scope expands significantly. Critical care nurses evaluate lab results and vital signs in real time to determine when emergency intervention is needed. They monitor for life-threatening changes like sepsis or shock and initiate responses immediately.
On a typical shift, an ICU nurse might set up and manage mechanical ventilators, cardiac monitors, oxygen delivery systems, and arterial pressure lines. They administer blood transfusions while watching for signs of transfusion reactions. They track fluid intake and output to catch problems like electrolyte imbalances before they become dangerous. They also assist physicians during procedures such as intubation, bronchoscopy, and endoscopy.
These roles require additional training and certification beyond an RN license, but they’re performed by registered nurses, not physicians. In many critical moments, the RN is the first person to recognize a deteriorating patient and the one who keeps them alive until a physician arrives.
Patient Education and Discharge Coordination
One of the most underappreciated parts of an RN’s job is teaching. Throughout a hospital stay, RNs educate patients and families about their conditions, medications, and what to expect after they leave. This isn’t a single conversation on the way out the door. Effective discharge education happens throughout the entire hospitalization, with understanding confirmed on the day of discharge using techniques like “teach-back,” where the patient explains the instructions in their own words.
RNs tailor this education to each patient’s literacy level, learning style, and social circumstances. They assess barriers to following a treatment plan at home, whether that’s a complicated medication schedule, lack of family support, or difficulty getting to follow-up appointments. They coordinate with community providers and family members to make transitions smoother. Poor discharge planning is one of the leading drivers of hospital readmissions, and the RN is the primary person responsible for getting it right.
Where RNs Work
Hospitals employ the largest share of registered nurses, but the role extends into dozens of other settings. RNs work in outpatient clinics, surgical centers, home health agencies, nursing homes, schools, correctional facilities, insurance companies, and public health departments. Travel nurses take short-term contracts at facilities across the country. Nurse educators teach in universities. Nurse managers oversee entire units or departments.
Some RNs specialize further by earning certifications in areas like oncology, pediatrics, labor and delivery, emergency medicine, or mental health. Others pursue advanced practice degrees to become nurse practitioners, nurse anesthetists, or clinical nurse specialists, roles that expand the scope to include prescribing medications and diagnosing medical conditions independently.
Job Outlook and Pay
The median annual wage for registered nurses was $93,600 as of May 2024, according to the Bureau of Labor Statistics. Employment is projected to grow 5 percent from 2024 to 2034, faster than the average across all occupations. Demand is driven by an aging population, a wave of retiring nurses, and expanding roles in outpatient and community-based care. Specialty areas like critical care and nurse anesthesia typically pay well above the median.