RDN-AP study materials
RDN-AP study resources

RDN-AP study plan

RDN-AP · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Advanced Clinical Nutrition Assessment and Diagnosis

  • Build a one-page decision map linking each nutrition assessment domain (anthropometrics, biochemical, clinical, dietary, functional) to the specific RDN action it triggers, and recite it from memory by day 7.

  • Interpret and contrast at least 15 laboratory values (albumin, prealbumin, CRP, transferrin, retinol-binding protein, lymphocyte count, electrolytes, renal and hepatic panels) in the context of inflammation, hydration, and hepatic or renal dysfunction.

  • Practice selecting and justifying the correct nutrition screening and malnutrition identification tool (MST, NRS-2002, MUST, GLIM criteria, AND/ASPEN) for 10 written patient vignettes and defend each choice in two sentences.

  • Calculate energy and protein needs by indirect calorimetry interpretation, Mifflin-St Jeor, Penn State equation, and 25-30 kcal/kg and 1.2-2.0 g/kg heuristics for 8 cases, noting when each method is preferred.

  • Perform and document a full nutrition-focused physical exam sequence (temporal wasting, fat and muscle depletion, micronutrient signs) on at least two practice subjects or standardized scenarios.

Your checkpoint

A 20-question self-authored assessment case set with worked answers, covering lab interpretation, malnutrition diagnosis, and energy/protein estimation, scored at 80% or better.

Week 2

Advanced Clinical Nutrition Assessment and Diagnosis & Medical Nutrition Therapy in Complex and Critically Ill Patients

  • Diagnose malnutrition severity using GLIM phenotypic and etiologic criteria across 12 mixed inpatient and outpatient vignettes, writing the exact diagnostic statement you would chart.

  • Apply refeeding syndrome risk stratification (NICE criteria, electrolyte thresholds, low-BMI and weight-loss cutoffs) and write a monitoring and thiamine/electrolyte repletion plan for 5 high-risk cases.

  • Explain the metabolic stress response in sepsis, trauma, and burns and translate it into macronutrient and fluid targets that avoid overfeeding.

  • Compute and interpret nitrogen balance, and identify when urine urea nitrogen collection is unreliable.

  • Integrate functional and sarcopenia assessment (handgrip, gait speed, SARC-F) into a nutrition diagnosis for older adults with multimorbidity.

Your checkpoint

Two complete SOAP notes for complex inpatient cases (one refeeding, one sepsis) including nutrition diagnosis in PES format, intervention, monitoring plan, and expected outcome indicators.

Week 3

Medical Nutrition Therapy in Complex and Critically Ill Patients

  • Construct MNT plans for critical illness, acute respiratory failure, acute kidney injury on CRRT, and hepatic encephalopathy, specifying protein targets and any condition-specific adjustments.

  • Differentiate when permissive underfeeding, trophic feeding, or full target feeding is appropriate in critical illness and justify with trial evidence logic.

  • Design glycemic control and insulin-adjusted feeding strategies for enterally fed patients with stress hyperglycemia.

  • Plan nutrition for major burns using the Curreri formula and adjust for fluid resuscitation and hypermetabolism.

  • Identify drug-nutrient interactions relevant to critically ill patients (PPIs, vasopressors, warfarin, levothyroxine, phenytoin with tube feeds) and state the management action.

Your checkpoint

A one-page comparison table of MNT targets across five critical care conditions (sepsis, ARDS, AKI/CRRT, liver failure, burns) with protein, energy, fluid, and micronutrient columns, plus a short rationale note.

Week 4

Nutrition Support: Enteral and Parenteral Nutrition

  • Select enteral formula type (polymeric, semi-elemental, elemental, disease-specific, immune-modulating) for 10 scenarios and justify each with a physiologic rationale.

  • Determine enteral access level (gastric vs post-pyloric vs surgical) and initiation timing for hemodynamically unstable, pancreatitis, and post-surgical patients.

  • Calculate parenteral nutrition components from scratch: dextrose, amino acids, lipid emulsion, electrolytes, and osmolality, for 4 adult cases including a 2-in-1 and a 3-in-1 formulation.

  • Recognize and manage central line-associated complications and PN-associated complications (hypertriglyceridemia, hepatic steatosis, refeeding, catheter sepsis) with a monitoring schedule.

  • Write a transition plan from PN to EN to oral diet, including a weaning and intake-monitoring protocol.

Your checkpoint

A full PN order set and monitoring schedule for one complex case, plus a 10-item self-quiz on formula selection and access decisions with rationale for each answer.

Week 5

Chronic Disease Management and Multimorbidity & Nutrition in Gastrointestinal, Hepatic, and Renal Disorders

  • Build a multimorbidity MNT plan for a patient with type 2 diabetes, CKD stage 4, heart failure, and obesity, resolving conflicting nutrient priorities into one coherent prescription.

  • Apply CKD MNT across stages including protein restriction, phosphorus and potassium management, and dialysis-specific targets, and explain when restriction should be relaxed in older or frail patients.

  • Manage hepatic disorders: NAFLD/MASLD, cirrhosis with and without ascites, and acute liver failure, specifying sodium, protein, and micronutrient adjustments.

  • Design nutrition therapy for short bowel syndrome, malabsorption, and post-bariatric surgery, including fluid and micronutrient monitoring schedules.

  • Address GI conditions (IBD, celiac disease, chronic pancreatitis with exocrine insufficiency) with specific enzyme, fiber, and micronutrient recommendations.

Your checkpoint

A one-page multimorbidity MNT decision aid that reconciles diabetes, CKD, and heart failure targets, with a worked example patient and cited rationale for each resolved conflict.

Week 6

Pediatric and Neonatal Advanced Nutrition Care & Oncology, Transplant, and Surgical Nutrition

  • Calculate neonatal and pediatric nutrient needs using gestational age, corrected age, and growth curves (WHO, CDC, Fenton, preterm growth charts) for 6 cases.

  • Plan nutrition for preterm infants including human milk fortification, trophic feeds, parenteral nutrition, and monitoring for necrotizing enterocolitis risk.

  • Apply pediatric malnutrition identification criteria and MNT for failure to thrive, cystic fibrosis, and inborn errors of metabolism.

  • Design perioperative nutrition for major surgery and ERAS pathways, including immunonutrition and preoperative carbohydrate loading decisions.

  • Plan nutrition for hematopoietic stem cell transplant and oncology patients, covering mucositis, neutropenic diet controversies, cachexia, and enteral vs parenteral decisions.

Your checkpoint

A pediatric-to-adult case portfolio of 6 short vignettes (3 pediatric/neonatal, 3 oncology/transplant/surgical) each with nutrition diagnosis, intervention, and monitoring plan.

Week 7

Evidence-Based Practice, Research, and Quality Improvement & Interprofessional Leadership, Ethics, and Practice Management

  • Appraise a nutrition intervention study using a structured critical appraisal checklist, identifying bias, confounding, and applicability to practice.

  • Translate an evidence-based guideline recommendation into a measurable quality improvement indicator with a data collection method and a PDSA cycle outline.

  • Apply the Code of Ethics for the profession to 6 ethical scenarios (tube feeding withdrawal, conflicts of interest, informed consent, scope of practice, resource allocation).

  • Define the RDN's role and communication strategy on an interprofessional team, including how to document recommendations that are declined.

  • Identify billing, reimbursement, and practice-management considerations relevant to advanced nutrition practice, including malnutrition documentation for coding.

Your checkpoint

A one-page QI proposal with a defined indicator, numerator and denominator, data source, baseline plan, and a 30-day PDSA outline, plus a 200-word ethical reasoning note on one end-of-life feeding scenario.

Week 8

Advanced Clinical Nutrition Assessment and Diagnosis & Medical Nutrition Therapy in Complex and Critically Ill Patients & Nutrition Support: Enteral and Parenteral Nutrition & Chronic Disease Management and Multimorbidity & Pediatric and Neonatal Advanced Nutrition Care & Nutrition in Gastrointestinal, Hepatic, and Renal Disorders & Oncology, Transplant, and Surgical Nutrition & Evidence-Based Practice, Research, and Quality Improvement & Interprofessional Leadership, Ethics, and Practice Management

  • Complete two full-length timed practice exams under test conditions and record domain-level accuracy to identify remaining weak areas.

  • Re-review every missed item from all prior weeks, writing a corrected rationale for each rather than just noting the right answer.

  • Recite from memory the core numeric targets (energy, protein, fluid, electrolyte, micronutrient) for at least 12 high-yield conditions across all domains.

  • Rehearse the calculation types most likely to appear (enteral and parenteral formula composition, nitrogen balance, BMI and weight change percentage, ideal body weight and adjusted body weight) until error-free on 20 consecutive items.

  • Finalize a one-page pre-exam summary sheet that you can review in the 48 hours before the test.

Your checkpoint

A scored practice exam summary showing at least 75% overall and no domain below 65%, plus a finalized one-page summary sheet and a list of no more than 10 remaining weak points with a re-review plan.

Milestones

Week 2: You can write a complete PES-format nutrition diagnosis and a refeeding monitoring plan from memory in under 15 minutes without notes.

Week 4: You can select an enteral formula and access route and justify both for any given scenario, and you can construct a full PN order set with correct electrolyte and osmolality calculations, scoring at least 80% on your self-quiz.

Week 6: You can reconcile conflicting nutrient priorities in a multimorbidity case and produce pediatric and oncology nutrition plans with correct growth-chart and target calculations, with your case portfolio complete.

Week 8: Practice exam scores are at least 75% overall with no domain below 65%, all missed items have written corrected rationales, and your one-page summary sheet is finalized.