How to Become a Nurse
Education & LicensingYou don't need a four-year degree to start working as a registered nurse in the United States. An Associate Degree in Nursing (ADN) is all you need to sit for the NCLEX-RN and start your career. Many nurses take this path through community college and are working within 2–3 years. A BSN is increasingly preferred by hospitals (especially Magnet-designated ones), but it can be completed while you're working.
Associate Degree in Nursing (ADN) Most accessible
2–3 years at a community college. Qualifies you to sit for the NCLEX-RN and work as a full RN in all 50 states. Lower cost, faster timeline. Many hospitals hire ADN nurses and offer tuition reimbursement for BSN completion.
Accelerated BSN (ABSN) If you have a prior degree
Have a bachelor's in any field? Accelerated BSN programs get you to a nursing degree in 12–18 months of intensive coursework, or part-time over 2–3 years at many schools. Skip repeating general education — jump straight to nursing curriculum.
Traditional BSN (4-year)
Standard bachelor's track at a university nursing program. Preferred by many hospitals and required for many leadership, advanced practice, and academic pathways. Magnet hospitals often require or prefer it.
NCLEX-RN Required to practice
The National Council Licensure Examination for Registered Nurses. Computer adaptive test (CAT format). As of 2023, uses the Next Generation NCLEX (NGN) — focuses heavily on clinical judgment, not just recall. Typically 85–150 questions. A score of "above passing standard" grants your RN license. Apply through your state's Board of Nursing (BON).
New Grad Residency Programs
Many hospitals offer 12–24 month structured nurse residency programs (like those accredited by the ANCC). These provide mentored onboarding, dedicated preceptors, and protected learning time. Strongly recommended if you can get into one.
An ADN gets you working — often within 2–3 years for a fraction of the cost of a university program. Most nurses complete their BSN later while employed, often with employer tuition assistance. Don't let the BSN requirement keep you from starting. Get in, get experience, then level up on someone else's dime.
Med-Surg 101
Your Floor, Your WorldMedical-surgical nursing is the largest nursing specialty in the United States and the most common first placement for new graduates. You'll care for adult patients with a broad mix of medical diagnoses, surgical recovery, and multiple comorbidities — often all at once.
- Patient populations: post-op, CHF, COPD, pneumonia, DM, infections, GI, renal, stroke recovery, and much more
- 12-hour shifts are standard (7a–7p or 7p–7a), sometimes 8s
- Typical nurse-to-patient ratio: 4:1 to 6:1 (varies by state, facility, and acuity)
- Some states (CA) mandate nurse-to-patient ratios by law — know your state's rules
- Expect constant interruptions — learn to prioritize in real time
- Charge nurse — your first call for problems, escalations, and backup
- CNAs / patient care techs — vital partners for ambulation, ADLs, VS, glucoses
- Attending / residents / APPs — know who to call for which issues
- Pharmacist — gold resource for drug questions, interactions, and dosing
- Respiratory therapy (RT) — your ally for breathing patients
- Case management & social work — discharge planning from day one
- Physical & occupational therapy — early mobilization, safety
Patricia Benner's framework describes how nurses develop. As a new grad, you're a Novice — rule-dependent, needing structure. Around 6 months you become Advanced Beginner. By year 2–3, Competent. Expert nurses often can't explain why they know something is wrong — they just do. Trust the process. The learning curve is steep and then it flattens beautifully.
The Head-to-Toe Assessment
Performed Every ShiftYour head-to-toe assessment is your foundation. Do it at the start of every shift, document it thoroughly, and use it to catch changes early. The patient's nurse the shift before will give you report — but your assessment is your own baseline. Never skip it, even if the prior nurse says everything is fine.
- Level of consciousness (LOC): Alert and oriented ×4 — person, place, time, situation
- GCS (Glasgow Coma Scale): Eyes (1–4), Verbal (1–5), Motor (1–6). Normal = 15
- Pupils: PERRLA — Pupils Equal, Round, Reactive to Light and Accommodation
- Speech: clear and coherent? Any slurring or confusion?
- Extremity strength: grip strength bilateral, drift, movement
- Heart rate & rhythm: regular or irregular? Heart sounds S1/S2? Any murmurs?
- Peripheral pulses: radial, pedal — compare bilaterally
- Capillary refill: <3 seconds = adequate perfusion
- Edema: pitting scale (1+ trace to 4+ severe) — note location (ankles, sacral)
- Skin: color, temperature, moisture (diaphoresis is a red flag)
- RR & effort: count for a full 30 seconds, note accessory muscle use
- SpO₂: note target range for this patient (COPD differs from baseline)
- Breath sounds: listen all 4 fields — clear? Crackles (rales), rhonchi, wheezes, diminished, absent?
- Cough: productive or dry? Character of sputum?
- O₂ delivery: nasal cannula, mask, high-flow, BiPAP — note flow rate
- Bowel sounds: auscultate all 4 quadrants before palpating
- Abdomen: soft vs. firm, tender, distended, guarding or rigidity?
- Last BM: date, character — is patient at constipation risk?
- Diet: tolerating oral intake? NPO status? Nausea/vomiting?
- Tubes: NG tube placement confirmed? Output character and amount?
- Urine output: goal is
>0.5 mL/kg/hr— oliguria warrants investigation - Character: color (pale yellow = well hydrated, dark = concentrated), clarity, odor
- Foley care: if present — catheter securing, dependent drainage, perineal care
- Dysuria, frequency, urgency: note in non-catheterized patients
- Mobility: ambulatory independently? With assist? Non-ambulatory?
- Fall risk: Morse or Hendrich score — implement precautions accordingly
- Skin integrity: any wounds, pressure injuries, rashes, bruising?
- Pressure injury risk: Braden Scale — check bony prominences (sacrum, heels, occiput)
- IV sites: check for redness, swelling, pain — signs of infiltration or phlebitis
Pain Assessment
Use the PQRST framework to assess pain completely:
If it isn't documented, it didn't happen. Chart your assessment, interventions, patient responses, and any communications with providers contemporaneously — or as close to real-time as possible. Good documentation protects you legally and clinically.
Vital Signs & When to Escalate
Know Your NumbersNormal Adult Ranges
Patients with COPD and chronic CO₂ retention have a hypoxic drive to breathe. Their target SpO₂ is often 88–92%, not ≥95%. Giving high-flow O₂ to a COPD patient can blunt their drive to breathe and cause hypercapnic respiratory failure. Always check the order and the patient's baseline. When in doubt, ask the provider.
When to Escalate
Don't wait until a patient is coding to call for help. Early recognition and escalation save lives. Use this mental hierarchy:
Your first call for most concerns. They can help triage, provide experienced eyes, and advise on whether to escalate further. Never be afraid to pull in your charge nurse.
Attending, resident, PA, or NP — know who is covering your patients. Use SBAR format (see Section 5) to communicate efficiently. Have the chart open, vitals ready, and a clear ask.
If you feel something is seriously wrong and you're not getting traction — or if the patient is deteriorating fast — call the RRT. They come to you. You do not need provider permission to call. Trust your gut.
Cardiopulmonary arrest. Call immediately. Start CPR. The code team comes to you. Know your unit's code cart location, how to call a code, and your role during a code event.
The first sign of patient deterioration is often a change in mental status — confusion, restlessness, or increased agitation that wasn't there before. Before you see dramatic vital sign changes, the brain tells you something is wrong. Trust a family member who says "she just doesn't seem like herself."
Prioritization Frameworks
Think Before You ActNursing is about managing competing demands under time pressure. These frameworks give you structure for deciding who to see first, what to do, and how to communicate.
ABCs — Always First
Airway, Breathing, Circulation. When you don't know what to do first, default to ABCs. A patient without a patent airway is your most critical patient, full stop.
SBAR — Communicating with Providers
SBAR is the universal structure for clinical communication. Prepare before you call so you can deliver a concise, clear handoff. Providers respect nurses who are organized.
Use this every time you enter a room:
- Acknowledge — greet the patient by name, make eye contact
- Introduce — name and role: "I'm Tom, your RN today"
- Duration — "I'm going to do your morning assessment, it should take about 10 minutes"
- Explanation — explain what you're doing and why, in plain language
- Thank you — "Is there anything else you need right now?"
AIDET reduces patient anxiety, increases cooperation, and builds trust — fast.
Common Med-Surg Conditions
Know What You're TreatingYou will see a rotating cast of these diagnoses throughout your career. Know the basics: why the patient is here, what you're watching for, and what to do.
- S&S: dyspnea, orthopnea, bilateral crackles, JVD, lower extremity edema, weight gain
- Monitor: daily weights (same time, same scale), I&Os, BMP, BNP, chest X-ray
- Key meds: diuretics (furosemide), ACE inhibitors, beta-blockers
- Fluid restrictions are common — know the patient's limit
- S&S: worsening dyspnea, increased sputum, wheezing, pursed-lip breathing, barrel chest
- O₂ target: usually 88–92% — avoid excessive oxygen
- Key meds: albuterol/ipratropium nebs, systemic steroids, antibiotics (if bacterial trigger)
- Positioning: high Fowler's, tripod position
- S&S: fever, productive cough, crackles/dullness to percussion, increased WBC, infiltrate on CXR
- Key nursing: incentive spirometry q1–2h, ambulation, deep breathing, head of bed >30°
- Key meds: antibiotics (culture-guided), antipyretics, O₂ support
- Aspiration pneumonia common post-op, stroke patients, altered LOC — position carefully
- Sepsis-3 definition (2016): life-threatening organ dysfunction from infection. Screen with qSOFA: ≥2 of — RR ≥22, altered mental status, SBP ≤100 mmHg. (Older SIRS criteria — temp, HR, RR, WBC — are still used in many hospital screening tools but are no longer the formal definition.)
- Sepsis 1-hour bundle:
- → Measure lactate (re-measure if initial >2 mmol/L)
- → Blood cultures ×2 sets (before antibiotics if <45-min delay)
- → Start broad-spectrum antibiotics
- → 30 mL/kg IV crystalloid bolus if hypotensive or lactate ≥4 mmol/L
- → Apply vasopressors if MAP <65 mmHg after or during fluid resuscitation
- Pain management: scheduled + PRN, multimodal (acetaminophen + NSAID + opioid), reassess after intervention
- VTE prevention: SCDs (sequential compression devices), enoxaparin per order, early ambulation
- Wound: assess q shift, document drainage, report signs of infection (redness, warmth, purulent discharge)
- Bowel: bowel regimen with opioids — constipation is nearly universal
- PONV (nausea): ondansetron, scopolamine patch, position changes
- Blood glucose target inpatient: usually 140–180 mg/dL
- Hypoglycemia (<70): The 15-15 Rule — 15g fast carbs, recheck in 15 min. Give glucagon or D50 IV if altered LOC
- DKA: high glucose, pH <7.3, HCO3 <18, ketones — insulin drip, aggressive fluids. Critical: ensure K+ ≥3.5 mEq/L before starting insulin (insulin drives K+ intracellularly and will precipitate dangerous hypokalemia). If K+ <3.5, replace first and hold insulin until corrected.
- Insulin types: rapid-acting (lispro/aspart) with meals, long-acting (glargine) once daily — never mix glargine with other insulins
- FAST: Face drooping, Arm weakness, Speech difficulty, Time to call
- Ischemic stroke: tPA window is 4.5 hours from symptom onset — time is brain
- NIH Stroke Scale — assess on admission and q shift
- BP management post-tPA: keep <180/105 for 24 hours
- Fall prevention: high risk from weakness and altered perception
- S&S: sudden dyspnea, pleuritic chest pain, tachycardia, hypoxia, hemoptysis
- Virchow's Triad risk factors: stasis, endothelial injury, hypercoagulability
- Diagnosis: CT pulmonary angiography (CTPA), V/Q scan, D-dimer
- Treatment: anticoagulation (heparin drip → NOACs or warfarin), thrombolytics for massive PE
- S&S: decreased UO (<0.5 mL/kg/hr), rising creatinine & BUN, electrolyte derangements
- Causes: prerenal (hypovolemia), intrarenal (nephrotoxins, ATN), postrenal (obstruction)
- Hold nephrotoxic drugs: NSAIDs, aminoglycosides, contrast dye
- Strict I&Os, BMP q shift or per order, notify if UO drops precipitously
- Timeline: tremors 6–24h, seizures 6–48h (peak ~24h), hallucinations 12–48h, delirium tremens (DTs) 48–96h+
- CIWA-Ar protocol: score guides benzodiazepine dosing (lorazepam or chlordiazepoxide)
- DTs: autonomic instability, fever, diaphoresis, seizures — ICU-level care
- Thiamine 100 mg IV before glucose to prevent Wernicke's encephalopathy
Key Medications
Know What You're GivingRight Patient · Right Drug · Right Dose · Right Route · Right Time
Scan barcodes (BCMA). Do not override the scanner without a legitimate documented reason. More errors happen from overrides than almost any other cause.
Cardiac & Blood Pressure
| Drug | Class | Key Nursing Points |
|---|---|---|
| Metoprolol | Beta-blocker | Hold if HR <60 or SBP <90. Do not stop abruptly. |
| Carvedilol | Alpha/Beta-blocker | Take with food. Same holds as metoprolol. |
| Lisinopril | ACE Inhibitor | Watch for hyperkalemia, hypotension, dry cough. Contraindicated in pregnancy. |
| Amlodipine | CCB (dihydropyridine) | Can cause dependent edema. May worsen CHF at high doses. |
| Digoxin | Cardiac glycoside | Narrow therapeutic window. Current HF guidelines target 0.5–0.9 ng/mL (older references cite 0.5–2.0 ng/mL, which remains the assay reference range). Toxicity: nausea, visual changes (yellow-green halos), bradycardia. Check apical pulse 1 full minute before giving. Check K+ — hypokalemia potentiates toxicity. |
| Amiodarone | Antiarrhythmic | Multiple serious interactions. Monitor QTc, LFTs, TFTs, pulmonary function with long-term use. Amiodarone is a potent peripheral vein irritant (not a true vesicant) — prolonged peripheral infusion causes phlebitis; use a central line for infusions >2h when possible. |
Diuretics
| Drug | Notes |
|---|---|
| Furosemide (Lasix) | Loop diuretic. Wasting diuretic — watch K+ and Mg2+. Monitor I&Os and daily weights. IV onset faster than PO. |
| Bumetanide (Bumex) | More potent loop diuretic. 1 mg IV bumetanide ≈ 40 mg furosemide. |
| Spironolactone | Potassium-sparing. Hyperkalemia risk — avoid with K+ supplements, ACE inhibitors in AKI. |
Anticoagulants
| Drug | Monitor | Reversal |
|---|---|---|
| Heparin (IV drip) | aPTT q6h (therapeutic: 60–100 sec) or anti-Xa level. Weight-based dosing per protocol. | Protamine sulfate |
| Enoxaparin (Lovenox) | Anti-Xa level (if renal impairment, extremes of weight). If CrCl <30 mL/min: dose-reduce to once daily dosing for therapeutic use, or consider switching to IV UFH (which is renally safe and titratable). | Protamine sulfate (partial) |
| Warfarin (Coumadin) | INR — therapeutic range typically 2–3 (or 2.5–3.5 for mechanical valves). Many food/drug interactions. | Vitamin K, FFP, 4-factor PCC (Kcentra) |
| Apixaban / Rivaroxaban (NOACs) | No routine monitoring needed. Watch renal function — dose adjust per CrCl. | Andexanet alfa (apixaban/rivaroxaban) |
Insulin
- Rapid-acting (lispro/aspart/glulisine): onset 15 min. Give within 15 min of meal.
- Regular insulin: onset 30 min. Used in sliding scale and IV drips.
- NPH: intermediate acting, peaks 4–12h.
- Glargine (Lantus) / Degludec (Tresiba): long-acting, once daily, NO peak. Do NOT mix with other insulins.
- Always verify insulin with a second nurse before administration
- Hold rapid-acting insulin if patient is NPO or not eating
- Check glucose before giving insulin — always
- Hypoglycemia (<70): give 15g fast carbs, recheck in 15 min
- Have orange juice, D50 amp, and glucagon accessible
- Glargine ≠ mixed with anything
High-Alert Medications — Extra Vigilance Required
IV potassium chloride must always be diluted and infused slowly — maximum 10 mEq/hr peripheral, 20 mEq/hr central (with continuous monitoring). A direct IV push of concentrated potassium causes cardiac arrest. This is one of the most catastrophic medication errors in nursing. Concentrated electrolyte vials should not be on the floor — but if you encounter one, treat it as a controlled substance.
Respiratory depression risk. Monitor RR, sedation level (POSS or RASS). Naloxone (Narcan) must be accessible. Bowel regimen always.
Vancomycin: monitor AUC/MIC (area under the curve) per pharmacy. Piperacillin-tazobactam: renal dosing, watch for neutropenia with long courses.
Prednisone/methylprednisolone: watch glucose (will spike), immunosuppression, don't stop abruptly, adrenal insufficiency risk with long use.
Critical Lab Values
Know When to CallCritical values require immediate provider notification. When the lab calls you with a critical value, you must notify the provider, document the notification, and document the provider's response. Don't sit on a critical lab.
Basic Metabolic Panel (BMP)
| Lab | Normal Range | Critical Values | Notes |
|---|---|---|---|
| Sodium (Na⁺) | 136–145 mEq/L | <120 or >160 | Hyponatremia: confusion, seizures. Correct slowly — rapid correction → osmotic demyelination. |
| Potassium (K⁺) | 3.5–5.0 mEq/L | <2.5 or >6.5 | Directly affects cardiac rhythm. Hypo: muscle weakness, arrhythmia. Hyper: peaked T-waves, VF risk. |
| BUN | 7–20 mg/dL | >100 | Elevated in AKI, dehydration, GI bleed. BUN:Cr ratio >20:1 = prerenal. |
| Creatinine | 0.6–1.2 mg/dL | Rise >0.3 in 48h | Best marker of renal function. Compare to baseline — chronic CKD patients have elevated baseline. |
| Glucose | 70–100 mg/dL (fasting) | <40 or >500 | Treat hypoglycemia immediately. DKA: high glucose + acidosis + ketones. |
| Bicarbonate (HCO₃⁻) | 22–29 mEq/L | <15 or >40 | Low in metabolic acidosis. High in metabolic alkalosis. |
| Calcium | 8.5–10.5 mg/dL | <6.5 or >13 | Hypocalcemia: Trousseau/Chvostek signs, tetany. Hypercalcemia: bones, groans, stones, moans. |
| Magnesium | 1.7–2.2 mg/dL | <1.0 or >4.9 | Hypomagnesemia causes hypokalemia and hyponatremia that won't correct without replacing Mg first. |
Complete Blood Count (CBC)
| Lab | Normal Range | Critical Values | Clinical Notes |
|---|---|---|---|
| WBC | 4.5–11.0 K/µL | <2.0 or >30 | Elevated = infection, inflammation, or leukemia. Low = neutropenia (infection risk — isolation precautions). |
| Hemoglobin | M: 13.5–17.5 / F: 12.0–15.5 g/dL | <7.0 (transfusion often considered) | Acute drop = bleeding. Chronic low = anemia, bone marrow issues. Transfuse per order, not automatically. |
| Platelets | 150–400 K/µL | <50 = bleeding risk; <20 = spontaneous bleeding | Heparin-induced thrombocytopenia (HIT) — if platelets drop 50% on heparin, think HIT immediately. |
Coagulation Studies
| Lab | Normal | Therapeutic / Critical |
|---|---|---|
| INR / PT | 0.8–1.2 / 11–13.5 sec | Therapeutic anticoagulation (warfarin): INR 2.0–3.0. Critical: >5.0 = high spontaneous bleed risk (critical threshold varies by institution — verify yours). |
| aPTT | 25–35 sec | Therapeutic heparin: 60–100 sec (1.5–2.5× normal). Critical: >120 sec. |
ABG Interpretation — ROME Method
Arterial blood gases tell you the patient's acid-base status and ventilation. Use the mnemonic ROME: Respiratory Opposite, Metabolic Equal.
| Disorder | pH | PaCO₂ | HCO₃⁻ | Clinical Clues |
|---|---|---|---|---|
| Resp. Acidosis | ↓ <7.35 | ↑ >45 | Normal/↑ | Hypoventilation, COPD, sedation, airway obstruction |
| Resp. Alkalosis | ↑ >7.45 | ↓ <35 | Normal/↓ | Hyperventilation, anxiety, hypoxia, PE, pregnancy |
| Metabolic Acidosis | ↓ <7.35 | Normal/↓ | ↓ <22 | DKA, AKI, lactic acidosis, sepsis, GI losses (diarrhea) |
| Metabolic Alkalosis | ↑ >7.45 | Normal/↑ | ↑ >26 | NG suctioning, vomiting, diuretics, excess bicarb |
pH: 7.35–7.45 · PaO₂: 80–100 mmHg · PaCO₂: 35–45 mmHg · HCO₃⁻: 22–26 mEq/L · SpO₂: 95–100%
Time Management on the Floor
Organize or Get BuriedNew grads consistently report that time management is the hardest part of the first year — harder than the clinical knowledge. The shift doesn't slow down for you to think. Here's how to build a framework.
Your Shift — A General Framework
- Receive shift report (SBAR format from off-going nurse)
- Review MAR — what meds are due in the next 2 hours?
- Quick visual scan: know where each patient is physically
- Assess your sickest patient first
- Check new orders and pending labs or procedures
- Introduce yourself to every patient (use AIDET)
- Cluster care — combine tasks when entering a room: assessment + meds + teaching + repositioning
- Medication windows: typically ±30–60 min from scheduled time (know your hospital's policy)
- Document in real-time or as soon as possible after each intervention
- Anticipate next steps: if a patient is getting a procedure, what prep is needed?
- Use your CNAs for vitals, ambulation, glucose checks — delegate clearly
- Hourly rounding reduces call lights by 50%+
- Pending tasks: what hasn't been done? Communicate to oncoming nurse
- Documentation complete before you give report
- Prepare SBAR for each patient — know the current status
- Outstanding labs or procedures: flag to oncoming nurse
- Never leave until you've given a clear, complete handoff
Print or write out a patient summary sheet at the start of every shift. Include:
- Room, name, age, attending, diagnosis
- Diet, activity, code status, isolation precautions
- Active IVs and lines, drains, tubes
- Key meds and times due
- Pending labs or tests
- Today's goals and priority tasks
Many units have pre-made templates. Use or adapt them. This sheet is your external brain.
- Fall prevention: bed lowest position, call light within reach, non-slip socks, side rails up, hourly rounding. Assess fall risk at admission, every shift, and after any fall.
- Pressure injuries: reposition q2h for immobile patients. Document skin assessment. Braden score drives prevention interventions. Protect heels and sacrum.
- Hand hygiene: 5 moments — before patient contact, before aseptic procedure, after body fluid exposure, after patient contact, after contact with patient surroundings. It's the single most impactful infection control measure.
- Restraints: require an order, must be checked regularly, document circulation/skin/behavior q1–2h. Release and reposition every 2 hours.
Survival Tips for New Grads
The Real TalkNobody expects you to know everything in your first year. What they expect is that you ask when you don't know, that you care for your patients, and that you show up. The rest is learned.
Nursing is one of the most demanding and most meaningful things a person can do. It is hard in the beginning in a way that is hard to describe. And then, quietly, it becomes yours. The assessment becomes second nature. The interventions become instinct. The patients stop being overwhelming and start being people you can actually help. You will get there. Keep going.