Nursing fundamentals, organized around what to do first
12 chapters
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about 19 min read
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free
Nursing fundamentals looks like hundreds of separate bedside tasks. Underneath, it is one repeated habit: look at the person, decide what could hurt them soonest, act, then check whether it worked. This guide teaches that habit first, then infection control and physical safety, then delegation and priority, and only then the bedside skills, each hung on the same frame. Textbooks say "client" and "patient" for the same person; you will read "patient" here. Orientation for study, not clinical advice, and not affiliated with the National Council of State Boards of Nursing. Local protocol and medical direction govern real care, and drug doses, device settings and state-by-state practice rules sit outside this guide.
Each chapter opens with the short version. Tap one to read the detail.
The nursing process: look before you act
~2 min
Every nursing decision runs through one loop: assess, name the problem, plan, act, and check the result. Many fundamentals errors come from entering that loop halfway, often by acting on a report nobody has gone to see.
The nursing process is the loop under everything else you will learn: assessment, diagnosis, planning, implementation and evaluation (ADPIE). Treat it as an order of operations rather than a form to complete. Each step borrows its authority from the one before, so a plan built on a secondhand report rests on very little.
Assessment has its own discipline. You need a baseline from admission, because a finding means little until you can say whether it is new. Normal ranges are only a starting point, and the comparison that counts is this person against their earlier self. A blood pressure inside the normal band can still be a large fall for someone who usually runs high.
The trap is mistaking a signal for an assessment. A monitor alarm or a colleague's message tells you to go and look, not what is wrong.
Picture an assistant telling you a patient seems short of breath. Calling the provider, turning up the oxygen and charting the complaint all feel productive, yet each one skips the first step. You go to the bedside and see for yourself, because everything afterward depends on what you find. Later comes the step beginners forget: you return and find out whether your action helped.
Rule: assess first unless someone needs rescue this moment, and never close the loop without evaluating.
Infection control: the route picks the barrier
~2 min
Two layers protect everyone. Standard precautions apply to every patient regardless of diagnosis, and transmission-based precautions add a barrier matched to how a particular germ travels: by touch, by close-range droplets, or on room air.
You cannot see who is carrying what. That is why standard precautions cover every patient, with the expected exposure deciding your gear: gloves for one task, a gown and face protection when spray is likely. Hand hygiene sits under all of it. Alcohol rub is the everyday default, and soap and water take over when your hands are visibly soiled. C. difficile is the case to learn: its spores resist alcohol, so soap and water are favored during an outbreak, and some units ask for them with any such patient. No method clears spores reliably, so gloves do much of that work, and your facility's policy decides.
The second layer follows the germ's route. A germ spread by touch calls for a gown, gloves and equipment that stays in the room. Close-range respiratory droplets call for a mask at the door. A germ that hangs in room air needs the room itself to help, through monitored negative pressure and a fit-tested respirator.
The trap is matching the barrier to how frightening a disease sounds. Picture three rooms on one hall: you wear a gown and gloves for C. difficile diarrhea, a surgical mask for influenza, and for suspected tuberculosis a respirator, with the patient in that negative-pressure room. The mask that suits influenza will not protect you from tuberculosis, and it does nothing about the diarrhea next door. A disease with two routes takes both barriers, and these precautions begin on suspicion, before any lab result.
Asepsis also asks where things are going. Clean technique lowers germ counts for routine care, while sterile technique applies when something enters a normally sterile body space. Treat any doubt about a sterile field as contamination and start again.
Rule: name how the germ travels to choose the room and the gear, and ask where the item is going to choose clean or sterile.
Physical safety and the patient who is getting worse
~2 min
Ask who could be hurt in the next few minutes, and remove that danger before anything routine. The same reflex applies to falls, restraints, alarms and fire, and to calling for help early when a patient starts to slide.
Physical safety comes down to one question you keep asking: who could be hurt in the next few minutes? A smoking wastebasket or a confused patient halfway out of bed outranks a louder request about something routine. Fire follows that order too: people in danger, then the alarm, then closing doors, and only then a small fire you can safely fight.
The trap is assuming more restriction means more safety. Restraints are a last resort with time-limited orders, because restraining people causes its own injuries. Bed rails carry the same hazard: frail or confused patients can become trapped in the gaps or climb over and fall farther.
Picture a confused man who keeps climbing out of bed at night. Adding rails can make the eventual fall worse. You keep the bed low and locked, work out whether he needs the toilet, light the path and put someone with him. Then you look for the reason he became confused at all.
Alarms need the same discipline. Go to the person before the screen, and learn why it sounded before you silence it.
The other half of safety is noticing decline, which often gives hours of warning in the vital signs and in how the patient looks. A rapid response team exists to reach them before the heart or breathing stops. Your worry alone is reason enough to call, and hesitating is the common failure.
Rule: remove the nearest danger first, choose the least restrictive fix, and call for help while there is still time to use it.
Priority and delegation: who first, and who does it
~2 min
Priority runs down a ladder: threats to airway, breathing and circulation, then what is new or unstable, then the remaining needs, generally physical before safety before emotional. Delegation moves a task to someone else and leaves the judgment, and your accountability, with you.
When everything arrives at once, you sort with a ladder rather than by volume. Threats to airway, breathing and circulation come first; cardiac arrest and major bleeding have their own trained sequences. Next comes whatever is new, unstable or unexpected for this person. Among the remaining needs, physical ones generally come before safety, and safety before emotional support.
The trap is ranking by distress. The patient shouting about knee pain is moving plenty of air, while the one who has gone quiet may not be. The ladder has a catch the other way too: a patient who mentions a plan to end their life has just raised an immediate safety problem.
Delegation answers the second question. Your state's practice act and your facility set the exact lines. The working principle is that, for a stable patient, a task with a predictable result and standard steps can move to a trained assistant, while deciding what the result means cannot. Before handing off, run the five rights: task, circumstance, person, direction and supervision. That last right means you come back and check.
Say four requests land together: a stable patient due a routine medication, long-standing arthritis pain, a grieving patient who wants company, and someone whose breathing turned noisy and labored minutes ago. You go to the fourth. An assistant can collect the stable patient's blood pressure, but in most settings the medication and the meaning of that number stay with you.
Rule: rank by what could kill or worsen soonest, and delegate tasks without ever delegating the thinking behind them.
Consent, records and handoffs
~2 min
Your legal and ethical duties mostly come down to who decides, what was said, and what got written. A patient with capacity decides for themselves, the chart holds facts, and a handoff is unfinished until the next person knows what you need.
Three jobs get confused here. The provider doing a procedure explains its risks, benefits and alternatives. The patient decides. Your signature as witness confirms that this person signed willingly, and it says nothing about your having explained anything.
Capacity is about this decision at this moment, and sedation can remove it. A person with capacity may refuse care you think they need, which is autonomy at work. Ask why, make sure they understand the risk, involve the provider and record their words. A living will and a health care power of attorney matter once the person cannot speak for themselves.
The chart holds what you saw, heard and did, in plain facts and on time. Errors stay readable under a single line or a tracked amendment, because altered records look worse than honest mistakes. An incident report is separate and never mentioned in the chart. Privacy follows the same discipline: open only what your role needs, even when a friend is the patient.
Handoffs fail at the last step. Situation, background, assessment and recommendation (SBAR) puts the point first, and new nurses often stop before saying what they want.
Picture a patient holding the pen who says, "I don't really know what they're taking out." Explaining it yourself is the tempting mistake. You stop, send for the provider, and chart what the patient said and whom you told.
Rule: the provider informs, the capable patient decides, and you record facts rather than conclusions.
Medication safety: a system built to catch you
~2 min
Giving medication safely is a chain of independent checks that assumes someone will eventually make a mistake. The checks only work if each is real, and if you assess the patient before and after the drug rather than only the label.
Think of medication administration as a chain of checks, each designed to stop an error the last one missed. The classic rights come first: right patient, using two identifiers and never a room number, then right drug, dose, route and time. Many programs add reason, documentation and response. Spoken orders get read back. High-alert drugs such as insulin, anticoagulants and opioids often get a second nurse who works the problem independently, as facility policy directs, since an error with these can cause unusually severe harm.
The trap is letting one check replace the others. A barcode scanner confirms that the drug matches the order, and it cannot tell you the order is wrong. Treat a patient's question the same way: "That pill looks different" is a reason to stop and recheck, even when you feel sure.
Your thinking should also surround the drug. Before an as-needed dose, confirm the reason, the last dose and a baseline such as a pain score, and afterward see whether it worked. An extended-release or enteric-coated tablet must stay whole, so ask the pharmacist for another form when swallowing is the problem. Keep an allergy distinct from a side effect by asking what actually happened.
Say you discover you gave a dose at the wrong time. The order of response is the lesson. You check the patient first, tell the provider, follow any new orders and chart the facts, then file the incident report separately. Staying quiet removes the best chance to catch the harm.
Rule: run every check as if the previous one failed, and treat the patient's response as part of the dose.
Lines, tubes and samples
~2 min
Every line and tube is a path into the body, so three questions apply to all of them: is it where you think it is, is it still needed, and what is it doing to the tissue around it? Samples follow the same care about identity and contamination.
Devices look like separate skills, but you can ask the same three questions of each. Is it where you think it is? Is it still needed? What is it doing to nearby tissue?
Placement matters most with a nasogastric feeding tube, since a misplaced one can deliver formula into the lungs. X-ray confirms initial placement, and listening to injected air is unreliable. Need matters most with a urinary catheter, because each extra day adds infection risk, so you ask daily whether the reason still holds and get it out when it does not.
Tissue matters most with an intravenous (IV) line. Infiltration means fluid in the tissue, so the site looks swollen, pale and cool. Phlebitis means an inflamed vein, so it looks red and feels warm and tender. In both, you stop the infusion first. A leak of a tissue-damaging drug has its own protocol, so check it before you pull the catheter.
The trap is trusting the machine. A pump reports on its own tubing, and it can run on while fluid fills the arm. Picture a quiet pump and a patient who says the arm feels tight. The site is puffy and cool, and the display looks perfect. You believe the arm.
Samples have a parallel failure: a result attached to the wrong person. You label at the bedside with two identifiers, take a catheter sample from its port rather than the bag, and report a mislabeled tube instead of fixing it yourself.
Rule: check placement, need and tissue every time, and trust what you find at the site over the display.
Breathing, oxygen and the surgical patient
~2 min
Oxygen is a drug with a target, adjusted within the order and reassessed after each change. After surgery, pain and anesthesia make people breathe shallowly, so airway and lung care lead the first hours and start with teaching before the operation.
Treat oxygen as a drug. The order gives a target, the device limits what you can deliver, and you reassess after every change. A nasal cannula delivers a variable amount and lets someone talk and eat, a non-rebreather delivers far more, and a Venturi mask delivers a precise amount.
Two traps recur. The first is a misreading of chronic obstructive pulmonary disease (COPD). Some of these patients do retain carbon dioxide on high oxygen, so you monitor closely and aim for the ordered range, but you never withhold oxygen from someone short of it. In a sudden emergency, follow your facility's protocol rather than waiting for an order to be written. The second is believing the pulse oximeter over the patient. Poor circulation and movement can distort it, and it may read falsely high on darker skin or in carbon monoxide poisoning. A rising oxygen need is itself a finding to report.
Surgery adds a predictable lung problem. Anesthesia, opioids and incision pain lead to shallow breathing, so small airways collapse and secretions collect. You teach deep breathing before the operation, when the patient can still learn, and make sure they know a spirometer is for slow inhaling, not blowing out.
Picture someone the day after abdominal surgery, breathing shallowly because coughing hurts. You first make sure sedation is not the cause, since opioids also make breathing shallow. Then you treat the pain, because that makes the rest possible, and a pillow held over the incision gives support for a cough. In the first hours, you check breathing before the wound.
Rule: titrate to the order, read the probe against the person, and protect the lungs before surgery as well as after.
Skin, movement and the cost of lying still
~2 min
Bed rest harms nearly every body system at once, so even small movement is treatment. Basic care is also your best chance to assess, since a bath shows you skin, strength and mood.
Hold one image: a body lying still is failing in several ways at once. Slow venous flow invites clots, shallow breathing lets lungs collapse, bone sheds calcium, bowels slow down, joints stiffen, and skin over bone loses its blood supply. That is why, within the activity order, you count a walk to the chair as treatment rather than waiting for a therapist to arrive.
Skin is where the damage shows first. You reposition on schedule, float the heels and keep skin dry. Press on a red area: redness that fades means blood is still flowing there, and redness that stays is an early pressure injury. Blanching may not show on darker skin, so use your fingers for warmth and firmness as well.
The trap is doing everything for the patient to be kind. It erodes function and dignity, and it wastes an assessment. Hygiene time shows you skin and mobility, and it can change your approach: an electric razor for someone on an anticoagulant, a daily foot check for someone with diabetes, since nerve damage can hide a sore.
Movement has its own mechanics. A cane goes on the strong side, and a dependent patient goes in a mechanical lift. Picture a patient standing for the first time after days in bed. You have them sit on the edge of the bed first, ask about dizziness, and stay within reach, because blood can pool in the legs on rising.
Rule: treat stillness as the hazard, and use every moment of basic care to look and to keep the person moving.
What goes in and what comes out
~2 min
Protect the airway before food goes in, and lean on daily weight as well as intake records to judge fluid balance. What comes out gets read as evidence, since the obvious reading of an elimination problem is often the wrong one.
Start with the swallow, because aspiration can happen without a cough. You sit the patient fully upright, keep bites small and unhurried, and check the weak cheek for pocketed food. A feeding tube changes the route without removing the risk, so you confirm placement by policy, keep the head of the bed raised, and flush with water around each medication so it does not clog.
Fluid balance has one especially useful bedside tool. Daily weight also captures the losses that a written record of intake and output cannot see, provided you keep the scale, the time and the clothing constant. A sudden gain points to water, since fat cannot arrive overnight.
On the way out, read before you treat. Incontinence comes in types with different fixes: leakage with coughing, sudden urgency, overflow from a bladder that never empties, and leakage because the person cannot reach the toilet in time. Nursing texts call that last type functional, though some health sites use the word for brain-to-bladder signal problems, so check how a source defines it. Measuring what remains after voiding shows whether retention sits behind the leak.
The trap is believing the surface. Picture an older patient with no formed stool for days who is now leaking liquid stool. Reaching for a diarrhea treatment before you assess is the mistake, because the liquid may be passing around a hard impaction. You assess first, and you remember that rectal stimulation can slow the heart and lower blood pressure.
Rule: secure the airway before intake, trust the scale over the tally, and ask what output implies before you treat it.
Pain, comfort and the end of life
~2 min
Pain is what the patient reports, so choose a tool that fits them and reassess after every intervention. When cure is no longer the goal, skilled symptom relief becomes the whole job, and it is active care.
Self-report is the standard for pain. Your job is to get the most reliable report this person can give: a number for most adults, pictures for young children, a behavior scale when someone cannot tell you. The classic error is doubting pain because it does not show. People with long-standing pain may look calm, and stoicism or fear of addiction keeps others silent.
Treatment layers methods that act at different points in the pain pathway, and fear of opioids alone is no reason to leave severe pain untreated. Whatever you give, come back and check both relief and side effects, above all sedation and breathing. With patient-controlled analgesia, a drowsy person stops pressing the button, and that safety loop breaks if anyone else presses it for them.
Heat widens vessels and relaxes muscle, while cold narrows vessels and limits swelling in a fresh injury. A patient with poor sensation or circulation may not warn you before a burn or cold injury, so you do the checking.
Near the end of life, the question to raise with the team about each order is whether it still serves comfort and the person's goals. Picture a family alarmed by a dying relative's rattling breath, cooling hands and long pauses. Saying plainly that these are expected, using the word dying, and repositioning the patient helps them more than another blood draw. You give them time and ask about their customs.
Rule: believe the report, reassess every intervention, and when cure ends, keep working on comfort.
The person in the bed: communication, teaching and change
~2 min
Good communication keeps the patient talking, and good teaching gets checked by having them show it back. Across the lifespan, the skill is noticing what is new for this person, especially sudden confusion in an older adult.
Judge anything you say by one test: does it keep the patient talking? Open questions, reflecting their words and comfortable silence do. "Why did you do that?" puts them on the defensive, and "Everything will be fine" promises what you cannot know. The exception to gentle indirection is suicide: ask plainly, because asking does not plant the idea, and never promise secrecy. You report abuse on suspicion rather than proof, as your state requires, and you interview the person alone.
Teaching has a similar test. "Do you understand?" gets a polite yes, while having the patient explain the plan or demonstrate the skill shows whether your teaching worked. Remove barriers first: settled pain, a working hearing aid, your face in good light. Use a trained interpreter rather than a relative. With aphasia, allow time, keep sentences short and check by asking for an action.
Lifespan knowledge helps you read behavior, from a teenager's absorption in peers to an elder reviewing their life. It also sorts prevention by whether disease is present yet: vaccines come before it, screening finds it early, and rehabilitation limits its damage.
The trap is writing change off as age. Picture an older woman who is suddenly muddled and sleepy this afternoon, though her family says she was sharp yesterday. Dementia usually develops slowly. Sudden, fluctuating confusion with poor attention suggests delirium, which is often treatable, so you report it and look for infection, medications or dehydration.
Rule: listen before you reassure, verify teaching by return, and treat any sudden change as a finding.
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