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Registered Dietitian RD Cheat Sheet

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Principles of Dietetics

  • 21% of exam
  • Nutrition Science Education Research Ethics Lab Picker

Nutrition Care

  • 45% of exam
  • NCP Assessment MNT Nutrition Support MNT Picker

Management Programs

  • 21% of exam
  • Management HR Finance Quality Formula Picker

Foodservice Systems

  • 13% of exam
  • Menus Procurement Production Sanitation Safety Picker

Quick Facts

  • Exam CDR RD/RDN
  • Vendor Pearson VUE
  • Questions 125-145 MCQ
  • Scored 100-120 scored
  • Pretest 25 unscored
  • Time 3 hours
  • Pass Scaled 25/50
  • Fee $250
  • Auth One year

Research Errors PR

  • Type I sees; Type II misses
  • Type I: false positive Type II: false negative

Lab Picker PR

  • Iron stores → Ferritin
  • Iron transport → Transferrin
  • Warfarin control → INR
  • Long glucose → A1c
  • Kidney function → eGFR
  • Acute protein trend → Prealbumin

Exam Facts PR

  • Outline 2022-2026 specs
  • Minimum 125 questions
  • Maximum 145 questions
  • Pass score 25 scaled
  • Review No backtracking
  • Ordering Domains intermixed
  • Score areas Advisory only

Nutrition Science PR

  • AMDR carb 45-65%
  • AMDR fat 20-35%
  • AMDR protein 10-35%
  • Thiamin Pyruvate cofactor
  • Ferritin Iron storage
  • Transferrin Iron transport
  • CCK Bile, enzymes
  • Intrinsic factor B12 absorption

Research + Education PR

  • Mean Arithmetic average
  • Median Middle value
  • Mode Most frequent
  • SD Data spread
  • Type I False positive
  • Type II False negative
  • Preparation Change within month
  • Action Changed under six months

Ethics + Practice PR

  • Nonmaleficence Do no harm
  • Autonomy Respect choice
  • Beneficence Promote benefit
  • Justice Fair treatment
  • Scope Practice limits
  • COI Disclose interests
  • HIPAA Protect PHI

ADIME CA

  • Assess, Diagnose, Intervene, Monitor, Evaluate
  • A: data D: PES I: plan ME: outcomes

Assessment vs Diagnosis CA

Assessment

  • Collect data
  • Anthros/labs/intake
  • Reassess often

Diagnosis

  • Name problem
  • PES statement
  • RDN-treatable
  • Data vs problem

MNT Picker CA

  • Gut works → EN ( Prefer enteral )
  • Gut unusable → PN ( IV nutrition )
  • Celiac disease → Gluten-free ( Wheat/barley/rye )
  • Warfarin use → Vitamin K consistency
  • Refeeding risk → Slow calories ( Monitor phosphorus )
  • Pancreatitis severe → Early EN ( 24-48 hours )
  • Ascites → Sodium restriction
  • Dialysis → Higher protein

NCP CA

  • Assessment Collect data
  • Diagnosis Name problem
  • PES Problem, cause, proof
  • Intervention Treat etiology
  • Monitoring Track indicators
  • Evaluation Judge progress
  • Intake domain Consumption problems
  • Clinical domain Medical conditions

PES CA

  • Problem related-to Etiology evidenced-by Signs
  • Problem: label Etiology: cause Signs: proof

Nutrition vs Medical Diagnosis CA

Nutrition

  • Intake/clinical/behavior
  • RDN resolves
  • PES format

Medical

  • Disease label
  • Provider diagnoses
  • ICD condition
  • Nutrition problem vs disease

Assessment + Labs CA

  • BMI Weight/height screen
  • SGA History, physical
  • NFPE Muscle, fat exam
  • Albumin Inflammation marker
  • Prealbumin Shorter half-life
  • A1c Long-term glucose
  • eGFR Kidney function
  • INR Warfarin effect

EN vs PN CA

EN

  • Functional gut
  • Tube formula
  • Maintains mucosa

PN

  • Gut unusable
  • IV formula
  • Higher infection risk
  • Gut first

MNT CA

  • Diabetes Carb consistency
  • CKD 3-5 Protein restrict
  • Dialysis Protein increase
  • Celiac Avoid gluten
  • GERD Trigger control
  • Pancreatitis Early EN
  • Ascites Sodium restrict
  • Warfarin Consistent vitamin K

Albumin vs Prealbumin CA

Albumin

  • Long half-life
  • Inflammation affected
  • Poor nutrition marker

Prealbumin

  • Shorter half-life
  • Trends faster
  • Still inflammation affected
  • Inflammation clouds both

Nutrition Support CA

  • EN Gut works
  • PN Gut unusable
  • NG Short-term stomach
  • PEG Long-term stomach
  • J-tube Post-pyloric feeding
  • Refeeding Low phosphorus
  • Dumping Hyperosmolar intolerance
  • Cycling PN Liver support

Management Cycle MA

  • Plan, organize, direct, control
  • Plan: goals Organize: resources Direct: people Control: standards

Mission vs Vision MA

Mission

  • Current purpose
  • Why exists
  • Guides decisions

Vision

  • Future aim
  • Where going
  • Aspirational direction
  • Now vs future

Formula Picker MA

  • Labor yearly → FTE ( 2080 hours )
  • Inventory speed → Turnover
  • Food cost percent → Food cost/sales
  • Usable food → EP yield
  • Break-even volume → Fixed/contribution
  • Productivity → Output/labor

Management MA

  • Planning Set direction
  • Organizing Arrange resources
  • Directing Lead people
  • Controlling Compare standards
  • Mission Purpose now
  • Vision Future state
  • Policy Broad rule
  • Procedure Step method

Finance + Quality MA

  • Budget Financial plan
  • Fixed cost Volume independent
  • Variable cost Volume dependent
  • Prime cost Food plus labor
  • FTE 2080 hours/year
  • Turnover COGS/avg inventory
  • PDSA Quality cycle
  • Benchmark Comparison standard

HR + Marketing MA

  • Job analysis Work requirements
  • Job description Duties, qualifications
  • Orientation Initial onboarding
  • Training Skill building
  • Delegation Assign authority
  • 4 Ps Product, price, place, promotion
  • Target market Defined audience

Safety Temps FO

  • Cold 41 | Hot 135 | Reheat 165
  • Cold: <=41 F Hot: >=135 F Reheat: 165 F

AP vs EP FO

AP

  • Purchase weight
  • Includes waste
  • Lower unit cost

EP

  • Usable weight
  • After trimming
  • Higher unit cost
  • Bought vs usable

Safety Picker FO

  • Prevent hazards → HACCP
  • Control hazard → CCP
  • Hot holding → 135 F
  • Cold holding → 41 F
  • Reheat leftovers → 165 F
  • Surface sanitizer → Test strips

Foodservice Systems FO

  • Conventional Prepare onsite
  • Commissary Central production
  • Ready-prepared Cook, chill/store
  • Assembly-serve Minimal preparation
  • Standard recipe Consistent yield
  • Production sheet Forecast quantities
  • Menu Operations blueprint

Conventional vs Commissary FO

Conventional

  • Onsite production
  • Same-day service
  • More local labor

Commissary

  • Central kitchen
  • Satellite service
  • Transport required
  • Onsite vs central

Procurement + Production FO

  • AP As purchased
  • EP Edible portion
  • Yield Usable percentage
  • FIFO Oldest first
  • Par stock Minimum inventory
  • Reorder point Buy trigger
  • Bid buying Competitive pricing
  • Forecasting Predict demand

Sanitation + Safety FO

  • HACCP Preventive controls
  • CCP Critical control point
  • TCS Time/temp control
  • Danger zone 41-135 F
  • Reheat 165 F, 15 sec
  • Cool step 1 135 to 70
  • Cool step 2 70 to 41
  • Chlorine 50-100 ppm

Common Traps

Score areas

  • Subscores guide only ≠ Total score passes

Question review

  • Answer then advance ≠ No return later

NCP sequence

  • Assessment before diagnosis ≠ Intervention targets etiology

Labs

  • Albumin is inflammation ≠ Ferritin stores iron

Nutrition support

  • Use gut if possible ≠ PN when gut fails

Refeeding

  • Hypophosphatemia hallmark ≠ Start low, monitor

Foodservice cost

  • EP exceeds AP ≠ Waste raises cost

Cooling rule

  • 135 to 70 first ≠ 70 to 41 next

Last Minute

  • 1. Weights: 21 / 45 / 21 / 13
  • 2. Minimum 125; maximum 145 questions
  • 3. Pass = scaled 25
  • 4. No skipping or backtracking
  • 5. NCP = ADIME
  • 6. PES = problem, cause, proof
  • 7. Use EN when gut works
  • 8. Refeeding = low phosphorus
  • 9. Warfarin = consistent vitamin K
  • 10. AP bought; EP usable
  • 11. Cold 41; hot 135; reheat 165
  • 12. Type I = false positive

CDR Registered Dietitian (RD)

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