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Cheat SheetNLE · Emergency & Critical Care Nursing

NLE Emergency & Critical Care Nursing — Principles of Emergency & Critical Care NursingCheat Sheet

A cheat sheet for Principles of Emergency & Critical Care Nursing (NLE Emergency & Critical Care Nursing): definitions, formulas and must-remember facts in one place.

Principles of Emergency & Critical Care Nursing - Cheat Sheet

Your last-minute revision companion for rapid-fire review of triage, primary survey, hemodynamics, and critical priorities in emergency and ICU nursing. Master ABCDE, know your numbers, and nail the priority hierarchy.

TRIAGE: Acuity-Based Sorting

Common values

Value

Immediate

Symbol

P1

Quantity

Emergent care window

Value

30–60 minutes

Symbol

P2

Quantity

Urgent care window

Important facts

  • Triage sorts by ACUITY, not arrival order.
  • Continuous re-triage is mandatory; patient status can deteriorate while waiting.
  • In routine ED: full resuscitation for non-breathing patient after airway opening.
  • In disaster START triage: non-breathing after airway opening = BLACK tag (expectant care).
  • ESI (Emergency Severity Index) = 5-level scale; further stratifies highest acuity.
  • Nurse re-assesses every patient at intervals to catch deterioration early.
  • Triage decision must account for available resources and likelihood of benefit.

Key definitions

Triage

Example

ED nurse assigns priority 1 to patient with airway obstruction, priority 2 to moderate abdominal pain, priority 3 to minor sprain.

Process of prioritizing patients by severity/urgency of condition; answers: 'Who cannot wait?'

Emergent (Priority 1)

Example

Airway obstruction, cardiac arrest, severe hemorrhage, chest pain (MI), unresponsive/seizing, severe trauma.

Immediate threat to life or limb; care needed NOW.

Urgent (Priority 2)

Example

Moderate abdominal pain, closed fracture with intact circulation, high fever, sutures-requiring laceration.

Serious but not immediately life-threatening; care needed within 30–60 minutes.

Non-Urgent (Priority 3)

Example

Minor sprains, chronic complaints, mild URI, prescription refills.

Stable condition that can safely wait.

START Triage (Disaster/Mass Casualty)

Example

RED = immediate/salvageable, YELLOW = delayed/serious, GREEN = minor/walking wounded, BLACK = expectant/deceased.

Simple Triage And Rapid Treatment; color-coded tags for field sorting.

Diagrams to know

  • Three-tier ED triage pyramid (emergent > urgent > non-urgent)
  • START triage color-coding flowchart (breathing? → mental status? → perfusion?)

PRIMARY SURVEY: ABCDE Framework

Important facts

  • ABCDE is absolute hierarchy: never advance to next letter until current threat is managed.
  • When two problems compete, treat the one HIGHER in ABCDE first.
  • Jaw-thrust (not head-tilt/chin-lift) is the airway maneuver for suspected cervical spine injury.
  • Oropharyngeal or nasopharyngeal airway insertion prepares for definitive airway (intubation/cricothyrotomy).
  • Tension pneumothorax: needle decompression 2nd ICS midclavicular line (B-level emergency).
  • Open chest wounds: apply occlusive dressing taped on 3 sides (allows air escape, prevents tension pneumothorax).
  • Two large-bore peripheral IVs (16–18 gauge) provide rapid access for volume and drugs.
  • AVPU faster than full GCS in initial assessment; check blood glucose in ALL altered mental status.
  • Pupil abnormalities: unilateral dilation → herniation risk; both dilated/fixed → severe brainstem injury.
  • Lethal triad in trauma: hypothermia + acidosis + coagulopathy = poor prognosis; prevent hypothermia aggressively.
  • Secondary survey does NOT begin until primary survey threats are controlled.

Key definitions

Primary Survey

Example

Unresponsive patient: check airway patency (A) → attach O₂ and assess breathing (B) → establish IV, assess perfusion (C) → check pupils and glucose (D) → expose to find hidden injury, prevent hypothermia (E).

Rapid, systematic assessment to detect and treat immediately life-threatening conditions; follows ABCDE sequence without skipping steps.

Airway (A) with C-spine protection

Example

Stridor, gurgling, inability to speak, or foreign body = airway emergency. Use jaw-thrust + cervical collar in trauma.

Assess patency; open airway with head-tilt/chin-lift (or jaw-thrust if cervical spine injury suspected); remove obstruction; secure definitive airway if needed.

Breathing (B)

Example

Absent breath sounds unilaterally + hypotension + JVD = tension pneumothorax; needle decompression at 2nd ICS, midclavicular line.

Assess ventilation and oxygenation: rate, depth, symmetry, breath sounds, SaO₂; deliver O₂; support with BVM if inadequate.

Circulation (C) with hemorrhage control

Example

Tachycardia + hypotension + cool clammy skin + delayed cap refill = shock. Start massive transfusion protocol if indicated.

Assess pulse, BP, skin perfusion, capillary refill; control external bleeding with direct pressure; establish two large-bore IVs (16–18 gauge); begin fluid resuscitation.

Disability (D) — Neurologic status

Example

Altered mental status in trauma + tachycardia → check glucose (hypoglycemia is reversible); if normal, assess for head injury.

Quick neuro check: AVPU (Alert, Voice, Pain, Unresponsive) or Glasgow Coma Scale; pupil size/reactivity; blood glucose.

Exposure/Environment (E)

Example

Trauma patient with lethal triad risk: keep patient warm, avoid cold IV fluids, monitor temperature actively.

Fully expose patient to find hidden injuries; prevent hypothermia with warm blankets and warmed fluids; maintain core temperature.

Diagrams to know

  • ABCDE decision tree (each letter with immediate interventions)
  • Airway maneuver selection flowchart (head-tilt/chin-lift vs jaw-thrust)
  • Tension pneumothorax signs & needle decompression anatomy

SECONDARY SURVEY & History

Important facts

  • Pain assessment is part of secondary survey but NEVER overrides unaddressed ABC problems.
  • Reassess immediately if ANY deterioration detected; return to primary survey if needed.
  • All body regions must be inspected and palpated: head, neck, chest, abdomen, pelvis, extremities, back (log-roll).
  • Full vital signs obtained in secondary survey; compare to baseline if available.
  • Documentation must be clear, concise, and time-stamped for legal/handover purposes.
  • SBAR prevents critical information loss; used in all critical-care transitions (ED to ICU, shift change, etc.).

Key definitions

Secondary Survey

Example

Patient stable after ABCs: inspect/palpate all body regions, obtain SAMPLE history, order indicated labs/imaging, reassess for deterioration.

Head-to-toe examination + focused history; performed AFTER primary survey threats are controlled; includes full vitals, diagnostics, and continuous reassessment.

SAMPLE History Mnemonic

Example

Patient with chest pain: SAMPLE reveals aspirin allergy, on lisinopril for HTN, ate 2 hrs ago, sharp pain started with deep breath.

S=Signs/symptoms, A=Allergies, M=Medications, P=Past medical history, L=Last oral intake, E=Events leading to presentation.

SBAR Handover

Example

To receiving ICU nurse: 'Situation: 45-year-old male with STEMI. Background: HTN, DM2. Assessment: Hemodynamically stable, troponin elevated. Recommendation: Monitor for dysrhythmia.'

S=Situation, B=Background, A=Assessment, R=Recommendation; structured communication to prevent information loss during transitions.

Diagrams to know

  • SAMPLE history checklist (6 elements with examples)
  • SBAR communication framework

HEMODYNAMIC MONITORING: Parameters & Targets

Formulas

MAP = DBP + (SBP − DBP) ÷ 3

Meaning

MAP = Mean Arterial Pressure, DBP = Diastolic BP, SBP = Systolic BP; calculated as diastolic + one-third of pulse pressure.

Watch out

Do NOT use (SBP + DBP) ÷ 2; that is WRONG. The formula weights diastole twice because it lasts twice as long. Also: trends matter more than single values.

When to use

Every time you need to assess perfusion adequacy; MAP ≥65 mmHg required for vital organ perfusion.

Common values

Value

≥65 mmHg

Symbol

MAP

Quantity

Mean Arterial Pressure minimum

Value

2–6 mmHg

Symbol

CVP

Quantity

Central Venous Pressure (normal)

Value

3–8 cmH₂O

Symbol

CVP

Quantity

CVP in cmH₂O

Value

≥0.5 mL/kg/hr

Symbol

UOP

Quantity

Urine output (adequate perfusion)

Value

90–120 mmHg

Symbol

SBP

Quantity

Systolic Blood Pressure (normal)

Important facts

  • MAP ≥65 mmHg is the MINIMUM perfusion threshold for vital organs; 70–100 mmHg is typical target.
  • Trends and clinical correlation matter MORE than single numbers; warm skin + good urine output confirms MAP is adequate.
  • Urine output ≥0.5 mL/kg/hr = adequate renal perfusion (check every 1 hour in unstable patient).
  • A-line insertion sites must be monitored for bleeding; distal limb checked for signs of impaired perfusion (pale, cool, weak pulse).
  • CVP useful for guiding fluid resuscitation, but SVP (static venous pressure) alone does not reliably predict fluid responsiveness.
  • Swan-Ganz: balloon must be inflated ONLY to obtain wedge reading, then deflated immediately (risk of PA rupture or infarction with prolonged inflation).
  • Transducer must be re-zeroed and re-leveled after patient repositioning or after setup change.
  • Watch for damped/flat waveforms (catheter clot, kink, or malposition); troubleshoot immediately.

Key definitions

Arterial Line (A-line)

Example

Transducer too high → falsely LOW reading; transducer too low → falsely HIGH reading. Re-level after patient repositioning.

Continuous, beat-to-beat blood pressure measurement + easy arterial sampling; transducer leveled at phlebostatic axis (4th ICS, midaxillary line) and zeroed to atmosphere.

Central Venous Pressure (CVP)

Example

CVP ↓ = hypovolemia (give fluids); CVP ↑ = fluid overload or RV failure (diuretics, afterload reduction).

Reflects right-heart filling and intravascular volume status; normal ≈ 2–6 mmHg (3–8 cmH₂O).

Pulmonary Artery (Swan-Ganz) Catheter

Example

PAWP ↑ = pulmonary edema risk; PAWP ↓ = hypovolemia. Never leave balloon inflated >2 min to prevent PA rupture.

Measures PA pressures, cardiac output, PAWP (pulmonary artery wedge pressure = estimate of left-heart filling); use declining but still examinable.

Phlebostatic Axis

Example

Place transducer stopcock at this anatomic level; error here causes false pressure readings.

Reference point for leveling hemodynamic transducers: 4th intercostal space at the midaxillary line (level of right atrium).

Diagrams to know

  • Transducer leveling anatomic reference (phlebostatic axis location)
  • Normal hemodynamic waveforms (arterial, CVP, PA, wedge)
  • Hemodynamic parameter interpretation flow (high vs low CVP/MAP → next step)

ICU Environment: Priorities & Nursing Interventions

Common values

Value

30–45 degrees

Symbol

HOB

Quantity

Head-of-bed angle (VAP prevention)

Value

1:1 or 1:2

Symbol

Staffing

Quantity

Nurse-to-patient ratio in ICU

Important facts

  • Prevention of iatrogenic harm is a core ICU nursing priority.
  • HOB 30–45 degrees reduces aspiration risk and VAP incidence.
  • Daily sedation interruption ('sedation holiday') allows assessment of readiness to wean from ventilator.
  • Spontaneous breathing trial (SBT) daily: PS/CPAP mode, low support, assess if patient can breathe spontaneously (RR <35, SpO₂ ≥90%, no distress).
  • Hand hygiene + sterile technique + aseptic handling are NON-NEGOTIABLE for line care.
  • Early mobilization (even passive ROM or dangling at bedside) reduces delirium, VAP, VTE, and pressure injuries.
  • Assess line necessity daily: if no longer needed, remove it immediately (reduces CLBSI risk).
  • Stress-ulcer prophylaxis indicated for mechanically ventilated patients and those with coagulopathy or major trauma.
  • Family involvement: explain alarms, set realistic expectations, support decision-making aligned with advance directives.
  • Continuous reassessment and titration of support based on patient response, not just numbers.

Key definitions

Intensive Care Unit (ICU)

Example

Patient on mechanical ventilator + vasopressors + CRRT (continuous renal replacement therapy) requires ICU-level care.

High-acuity environment with continuous monitoring, high nurse-to-patient ratio (1:1 or 1:2), and advanced life support capacity (mechanical ventilation, vasoactive drugs, renal replacement therapy).

Ventilator-Associated Pneumonia (VAP) Prevention

Example

ICU nurse elevates HOB, prepares patient for SBT after sedation pause, checks readiness criteria (PaO₂/FiO₂, PEEP, RR <35).

Bundle: HOB ≥30–45 degrees, daily sedation interruption, spontaneous breathing trial daily, oral hygiene with chlorhexidine.

Central-Line Bloodstream Infection (CLBSI) Prevention

Example

Nurse checks CVP line daily: still needed? Site clean? No signs of infection? If not needed, advocate for removal.

Bundle: sterile technique on insertion, skin antisepsis (chlorhexidine), daily assessment for line necessity, prompt removal when no longer needed.

Venous Thromboembolism (VTE) & Pressure Injury Prevention

Example

Post-op patient in ICU: apply SCD immediately, start prophylactic heparin (unless contraindicated), reposition q2h, assess skin.

Early mobilization, sequential compression devices (SCD), pharmacologic prophylaxis (if not contraindicated), frequent repositioning, skin integrity assessment.

Stress-Ulcer Prophylaxis

Example

Intubated patient: PPI 40 mg daily or BID to prevent GI bleeding from stress ulcers.

Administer H₂-blockers or proton-pump inhibitors (PPI) to high-risk patients (mechanical ventilation >48 hrs, coagulopathy, major trauma/surgery).

Diagrams to know

  • VAP bundle checklist (HOB angle, sedation interruption, SBT, oral hygiene)
  • CLBSI prevention daily assessment flowchart
  • VTE prophylaxis algorithm (risk stratification → SCD ± pharmacologic)

CRITICAL PRIORITY HIERARCHY & Nursing Management

Important facts

  • Airway is ALWAYS the first priority in any emergency; a patient without an airway cannot survive.
  • When two ABC problems coexist, the higher-priority letter wins (e.g., airway obstruction always before respiratory distress).
  • Documentation must include time, intervention, patient response, and reasoning for decisions (critical for legal/continuity).
  • Handover using SBAR prevents critical information loss during transitions and ensures safe continuity of care.
  • Anticipate complications: airway loss → hypoxic brain injury, missed tension pneumothorax → cardiac arrest, uncontrolled hemorrhage → irreversible shock.
  • Iatrogenic complications (device infections, ventilator injury, pressure injuries) are largely PREVENTABLE and are core nursing accountability.
  • Patient & family education: brief, concrete, repeated; orient to what is happening and why each intervention is needed.
  • Before ED discharge: provide clear return precautions (specific warning signs that warrant immediate return).
  • RA 9173 (Philippine Nursing Practice Law): Nurses are accountable for safe, timely, quality care aligned with professional standards.
  • NCM levels in Philippines: Level 1 (RN in critical care) and above require advanced assessment and intervention skills.

Key definitions

Priority Hierarchy in Emergency/Critical Care

Example

Patient with airway obstruction AND hemorrhage: secure airway FIRST, then control bleeding. Patient with respiratory distress AND hypotension: support breathing FIRST, then restore BP.

ABCDE is absolute: Airway ALWAYS before breathing, breathing before circulation, circulation before disability. When two problems compete, treat the one HIGHER in ABCDE first.

Stabilize Before Diagnosing

Example

Chest pain patient: O₂, IV, cardiac monitor, 12-lead EKG, troponin sent, but initial treatment (aspirin, nitroglycerin) does NOT wait for lab results.

Support airway, deliver oxygen, restore circulating volume BEFORE pursuing definitive diagnosis; investigation does not delay resuscitation.

Establish Access Early

Example

Trauma with tachycardia + weak pulse: two 18-gauge IVs placed immediately, fluids wide open, blood type ordered.

Two large-bore peripheral IVs (16–18 gauge) provide rapid pathway for fluids and drugs in any unstable patient.

Reassess After Every Intervention

Example

After IV fluid bolus: recheck BP, cap refill, skin perfusion. If still hypotensive → increase rate, consider vasopressor, search for occult bleeding.

Effectiveness judged by patient response, not task completion; if no improvement or deterioration, modify approach immediately.

Continuous Monitoring

Example

ED patient with syncope: attach monitor immediately, oxygen available, IV ready, watch for dysrhythmia.

Any unstable patient = cardiac monitor + pulse oximetry + frequent (or continuous) BP measurement.

Diagrams to know

  • ABCDE priority sequence with competing scenarios
  • Nursing management decision tree (stabilize → monitor → assess response → modify or escalate)
  • When-to-escalate or call physician/team lead flowchart

High-Yield NLE Points (Exam Focused)

Important facts

  • TRIAGE: Sorts by ACUITY (not arrival); Emergent = immediate, Urgent = 30–60 min, Non-urgent = can wait.
  • DISASTER TRIAGE: Non-breathing after airway opening = BLACK tag (expectant); in routine ED = full resuscitation.
  • ABCDE: Airway (with C-spine) → Breathing → Circulation (with hemorrhage control) → Disability → Exposure. DO NOT skip steps.
  • AIRWAY MANEUVER: Jaw-thrust (not head-tilt/chin-lift) when C-spine injury suspected.
  • TENSION PNEUMOTHORAX: Absent breath sounds + hypotension + JVD = needle decompression 2nd ICS midclavicular line (B-priority emergency).
  • OPEN CHEST WOUND: Occlusive dressing taped on 3 sides (allows air escape).
  • AVPU: Alert, Voice, Pain, Unresponsive; ALWAYS check blood glucose in altered mental status (reversible cause).
  • HEMORRHAGE CONTROL: Direct pressure + two large-bore IVs (16–18 gauge) + fluid resuscitation.
  • TRANSDUCER LEVELING: Phlebostatic axis = 4th ICS, midaxillary line; too high = falsely LOW BP, too low = falsely HIGH BP.
  • CVP NORMAL: 2–6 mmHg; LOW = hypovolemia, HIGH = fluid overload/RV failure.
  • MAP TARGET: ≥65 mmHg minimum; 70–100 typical; correlate with clinical signs (warm skin, urine output ≥0.5 mL/kg/hr).
  • SWAN-GANZ: Never leave balloon inflated >2 min (risk of PA rupture).
  • VAP PREVENTION: HOB ≥30–45°, daily sedation interruption, SBT daily, oral hygiene with chlorhexidine.
  • CLBSI PREVENTION: Sterile technique + daily necessity assessment + prompt removal if not needed.
  • LETHAL TRIAD (TRAUMA): Hypothermia + acidosis + coagulopathy = poor prognosis; prevent hypothermia aggressively.
  • SECONDARY SURVEY: Head-to-toe exam + SAMPLE history; ONLY after ABC threats controlled; pain assessment does NOT override ABC.
  • SBAR HANDOVER: Situation → Background → Assessment → Recommendation; prevents information loss.
  • REASSESS AFTER EVERY INTERVENTION: Adjust based on patient response, not task completion.
  • NURSING ACCOUNTABILITY (RA 9173): Safe, timely, quality care aligned with professional standards and scope of practice.

Must remember

  • AIRWAY IS ALWAYS FIRST: Never advance ABCDE until current threat is managed. When two problems compete, treat the one HIGHER in the sequence.
  • TRIAGE = ACUITY, NOT ARRIVAL: Emergent (immediate life/limb threat) seen first, regardless of arrival order. Continuous re-triage is mandatory.
  • JAW-THRUST (not head-tilt/chin-lift) for C-spine injury suspects; head-tilt/chin-lift for no spinal concern.
  • TENSION PNEUMOTHORAX SIGNS: Absent breath sounds + hypotension + JVD = needle decompression 2nd ICS midclavicular line (B-priority emergency).
  • TRANSDUCER LEVELING: Phlebostatic axis = 4th ICS, midaxillary line. Too high = FALSE LOW reading; too low = FALSE HIGH reading.
  • CVP INTERPRETATION: 2–6 mmHg normal; LOW = hypovolemia (give fluids); HIGH = fluid overload/RV failure (diuretics/afterload reduction).
  • MAP ≥65 mmHg MINIMUM for organ perfusion; correlate with clinical signs (warm skin, UOP ≥0.5 mL/kg/hr, clear mentation).
  • SECONDARY SURVEY starts ONLY AFTER ABC threats are controlled; pain assessment is part of secondary survey, NOT a primary priority.
  • VAP PREVENTION BUNDLE: HOB 30–45°, daily sedation interruption, daily SBT, oral hygiene — all are MUST-DOS in ventilated patients.
  • RA 9173 (PH Nursing Law): Nurses are accountable for safe, timely, quality care aligned with professional standards; NCM Levels define scope of practice.

Last minute tips

  • EXAM QUESTION TIP: 'Patient without airway' always = manage A first, even if bleeding is visible. Airway > Breathing > Circulation > Disability.
  • DISASTER TRIAGE FLIP: In routine ED, resuscitate non-breathing patient after airway opening. In disaster START triage, that same patient = BLACK tag (expectant care). Know which context the question is asking about.
  • TRANSDUCER ERRORS: If BP reading seems wrong, check (1) transducer at phlebostatic axis? (2) Zeroed to atmosphere? (3) No kinks/bubbles in tubing? Most errors are setup mistakes, not patient problems.
  • PRIORITY HIERARCHY TRAP: Questions ask 'what do you do first?' when patient has multiple problems. ALWAYS apply ABCDE order, not severity rank. Airway obstruction beats massive bleeding (A before C).
  • HEMODYNAMIC TARGETS: Know MAP ≥65 mmHg, CVP 2–6 mmHg, UOP ≥0.5 mL/kg/hr, and that TRENDS matter more than single values. A dropping MAP with cool skin is more concerning than a high CVP with good perfusion.

Comparison tables

Triage Categories in ED vs. Disaster (START Triage)

Triage LevelED PriorityTimely Care WindowDisaster TagCare Approach
Highest AcuityEmergent (P1)ImmediateNOWREDFull resuscitation (routine); expectant if non-breathing after airway opening (disaster)
Moderate AcuityUrgent (P2)Serious but not life-threatening30–60 minYELLOWDefinitive care delayed; stabilize and monitor
Low AcuityNon-Urgent (P3)Stable/minorCan waitGREENMinor interventions; discharge with precautions
Deceased/UnrecoverableN/AN/AN/ABLACKComfort care only; routine ED = full resuscitation

ABCDE Primary Survey: Elements & Key Interventions

ElementAssessment FocusImmediate ActionRed Flag SignsNext Intervention If Problem
A — Airway (+ C-spine)Patency, obstruction, ability to speakOpen airway (head-tilt/chin-lift or jaw-thrust); remove obstruction; suction; oropharyngeal airwayStridor, gurgling, speech loss, foreign body, edema, bloodPrepare for intubation or cricothyrotomy; immobilize C-spine
B — BreathingRate, depth, symmetry, breath sounds, SaO₂Oxygen delivery; BVM if inadequate; position for easy breathingAbsent breath sounds, RR <8 or >30, SpO₂ <90%, stridor, accessory muscle useSupport ventilation; needle decompression if tension PTX; intubation if needed
C — Circulation (+ hemorrhage)Pulse (rate, quality), BP, skin color/temp, cap refillDirect pressure on bleeding; two large-bore IVs; fluid resuscitation; assess for shockTachycardia, hypotension, cool clammy skin, delayed cap refill, pale/cyanoticIncrease fluid rate; consider vasopressor; massive transfusion protocol if indicated
D — Disability (neuro)AVPU or GCS, pupils, blood glucoseQuick neuro check; assess glucose; protect spineUnresponsive, abnormal pupils, fixed/dilated pupils, hypoglycemiaCheck glucose (give D50 if hypoglycemic); assess for head/spinal injury; prepare for escalation
E — Exposure/EnvironmentHidden injuries, core temperatureFully expose; prevent hypothermia; apply warm blankets and warmed fluidsHypothermia, obvious trauma/wounds not yet detectedActive rewarming; warm all fluids; continuous temperature monitoring

Hemodynamic Parameter Interpretation: What High/Low Means

ParameterNormal ValueWhen HIGHWhen LOWLikely Cause (HIGH)Likely Cause (LOW)
MAP70–100 mmHg>100 mmHg<65 mmHgHypertension, sepsis, sympathetic overloadHypovolemia, septic shock, cardiogenic shock, vasodilation
CVP2–6 mmHg>6 mmHg<2 mmHgFluid overload, RV failure, pulmonary HTN, pericardial effusionHypovolemia, dehydration, excessive diuresis
Urine Output≥0.5 mL/kg/hr>0.5 mL/kg/hr<0.5 mL/kg/hrFluid overload, diuretic use, hypoglycemiaHypovolemia, acute kidney injury, sepsis, cardiogenic shock
Skin PerfusionWarm, dry, normal cap refill <2 secN/ACool, clammy, delayed cap refillN/AShock (any type); inadequate MAP or cardiac output

Common ICU Complications: Prevention vs. Recognition

ComplicationPrevention BundleEarly Signs/RecognitionNursing InterventionHigh-Risk Patients
VAP (Ventilator-Assoc. Pneumonia)HOB 30–45°, daily sedation interruption, SBT daily, oral hygiene qidFever, new infiltrate on CXR, purulent sputum, increased WBCCheck HOB angle, assess SBT readiness, provide oral care, monitor temp/WBCPatients on mechanical ventilation >48 hrs
CLBSI (Central-Line Infection)Sterile insertion, aseptic handling, daily necessity check, prompt removalFever, elevated WBC, positive blood culture, erythema/drainage at siteDaily site assessment, monitor temp/WBC, review line necessity, maintain asepsisLong-term CVP/PICC, immunocompromised, sepsis risk
VTE (Clot/PE)SCD, prophylactic anticoagulation (if not contraindicated), early mobilizationUnilateral leg swelling, calf pain, sudden dyspnea, chest pain, desaturationApply SCD immediately post-op, assess for calf tenderness, maintain DVT prophylaxis, early ambulationImmobilized, post-op, trauma, malignancy, hypercoagulable state
Pressure Injury (Decubitus)Frequent repositioning q2h, proper padding, skin assessment q4h, early mobilizationErythema, blanching hyperemia, non-blanching erythema, tissue breakdownReposition q2h, assess skin daily, use pressure-relief devices (mattress, pillows)Immobilized, sedated, poor nutrition, incontinence, elderly
GI Bleed (Stress Ulcer)H₂-blocker or PPI for high-risk patients (ventilated >48 hrs, trauma, coagulopathy)Hematemesis, melena, tarry stools, falling Hgb, positive fecal occult bloodAdmin prophylactic PPI/H₂-blocker, monitor Hgb/Hct, assess stool, NGT lavage if bleedingMechanically ventilated, major surgery/trauma, coagulopathy, renal failure

Diagrams

Principles of Emergency & Critical Care: Complete Concept Map

Master overview showing how triage, primary survey, hemodynamics, and ICU priorities interconnect. Use this to see the big picture before drilling into details.

Primary Survey ABCDE Decision Tree with Red Flags

Step-by-step flowchart guiding you through the primary survey. Each box shows assessment, red flag signs, and the intervention needed before advancing to the next letter.

Shock States & Hemodynamic Response Cascade

Shows the progression of shock states (hypovolemic, distributive/septic, cardiogenic) and how hemodynamic parameters (MAP, CVP, HR, UOP) change. Use to predict what happens next and guide interventions.

Hemodynamic Transducer Setup & Troubleshooting

Critical troubleshooting flow for arterial line and CVP readings. Shows setup steps, common errors, and how to recognize/fix falsely high or low readings.

ICU Complication Prevention: Daily Safety Checklist Bundle

Daily nursing checklist for preventing four major ICU complications: VAP, CLBSI, VTE, and pressure injury. Use each shift to ensure prevention bundles are in place.

Principles of Emergency & Critical Care Nursing is chapter 1 of 5 in the Emergency & Critical Care Nursing part of Super Tutor's NLE review. The Philippine Nurse Licensure Examination (PNLE) is given by Professional Regulation Commission (PRC) — Board of Nursing; its dates, format and passing rules are on the NLE page. See the NLE guide.

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