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Concept MapNLE · Gastrointestinal Nursing

NLE Gastrointestinal Nursing — Nutritional & Metabolic SupportConcept Map

The Nutritional & Metabolic Support concept map from Super Tutor's NLE review: the central idea, the concepts around it and how they relate.

Nutritional & Metabolic Support - Concept Map

Nutritional & Metabolic Support in Gastrointestinal Nursing

Related concepts

Nutritional Assessment

Sub concepts

  • Anthropometric measures (BMI, weight, height, unintentional weight change)
  • Biochemical markers (albumin, prealbumin, transferrin, lymphocyte count, electrolytes)
  • Clinical assessment (muscle wasting, edema, skin/hair changes, oral intake history)
  • BMI categories (normal, overweight, obese — including lower Asian cut-offs for Filipinos)

Relationship to central

Foundation for identifying nutritional status and determining intervention type

Obesity Management

Sub concepts

  • Definition and risk stratification (BMI ≥30; Asian ≥27.5)
  • Comorbidities (type 2 diabetes, hypertension, OSA, fatty liver, CAD)
  • Management ladder (diet + activity + behavior change → pharmacotherapy → bariatric surgery)
  • Nursing role (realistic goal-setting, motivational support, non-judgmental care, comorbidity screening)

Relationship to central

Nutritional intervention for excess adiposity affecting metabolic and cardiometabolic health

Malnutrition & Refeeding Syndrome

Sub concepts

  • Types (marasmus, kwashiorkor, mixed malnutrition)
  • Clinical manifestations (weight loss, wasting, weakness, poor wound healing, edema, infection risk)
  • Assessment (BMI, weight loss >5%/month or >10%/6 months, low prealbumin/albumin)
  • Refeeding syndrome pathophysiology (insulin surge → intracellular K/PO4/Mg shift → arrhythmias)
  • Prevention & management (start LOW and SLOW, thiamine, electrolyte replacement, close monitoring)

Relationship to central

Critical recognition and safe management of protein-energy deficits and life-threatening electrolyte shifts

Enteral Nutrition (Tube Feeding)

Sub concepts

  • Routes (nasogastric, nasointestinal short-term; PEG, jejunostomy long-term)
  • Safety verification (tube placement: pH ≤5.5, X-ray; never auscultation alone)
  • Aspiration prevention (HOB 30–45°, gastric residual checks, flushing, medication protocols)
  • Formula types (polymeric, elemental/semi-elemental, disease-specific)
  • Delivery methods (bolus/intermittent vs. continuous infusion)
  • Complication recognition (aspiration, diarrhea, tube displacement, dumping-type symptoms)

Relationship to central

Preferred GI-based feeding route when oral intake inadequate but GI function intact

Total Parenteral Nutrition (TPN)

Sub concepts

  • Indications (bowel resection, ileus, pancreatitis, fistula, intractable vomiting)
  • Administration rules (CENTRAL line only, pump, aseptic technique, never abrupt cessation)
  • Composition (dextrose, amino acids, lipids, electrolytes, vitamins, trace elements)
  • Safety monitoring (blood glucose q4–6h, weight, I&O, electrolytes, line care, dressing changes)
  • Complications (catheter sepsis/infection, hyperglycemia, rebound hypoglycemia, air embolism, thrombosis)
  • Transitioning off TPN (taper gradually, monitor glucose, advance enteral/oral intake)

Relationship to central

IV nutritional support when GI tract cannot be used — high-risk therapy requiring strict safety protocols

Bariatric Surgery Nursing

Sub concepts

  • Common procedures (sleeve gastrectomy, Roux-en-Y bypass)
  • Immediate post-op priorities (leak detection, feeding protocol, VTE prevention, airway management)
  • Dumping syndrome (pathophysiology, prevention via meal composition and eating habits)
  • Lifelong nutritional deficiencies (B12, iron, folate, calcium, vitamin D, thiamine)
  • Micronutrient deficiency signs (anemia, neuropathy, night blindness, poor healing)

Relationship to central

Perioperative and long-term management of severe obesity via surgical intervention

Professional & Legal Framework

Sub concepts

  • RA 9173 (Philippine Nursing Practice Act — scope of practice, accountability)
  • NLE safety-critical topics (TPN rules, refeeding recognition, enteral tube verification)
  • Philippine healthcare context (resource availability, bariatric surgery access, GI nursing scope)

Relationship to central

Regulatory and ethical context for nutritional care delivery in the Philippines

Concept connections

  • Nutritional AssessmentObesity ManagementAssessment identifies elevated BMI and body composition; assessment findings guide obesity intervention strategy
  • Nutritional AssessmentMalnutrition & Refeeding SyndromeAssessment detects low albumin, prealbumin, weight loss; triggers malnutrition diagnosis and refeeding risk evaluation
  • Malnutrition & Refeeding SyndromeEnteral Nutrition (Tube Feeding)Refeeding precautions apply when starting enteral feeding in malnourished patients; slow advancement prevents complications
  • Malnutrition & Refeeding SyndromeTotal Parenteral Nutrition (TPN)TPN is used for severe malnutrition when GI tract cannot be used; refeeding electrolyte monitoring applies to TPN also
  • Enteral Nutrition (Tube Feeding)Total Parenteral Nutrition (TPN)Enteral feeding is preferred first-line when GI works; TPN reserved for when enteral route is not feasible (gut non-functional)
  • Obesity ManagementBariatric Surgery NursingBariatric surgery is offered for severe obesity when conservative measures fail; represents final rung of obesity management ladder
  • Bariatric Surgery NursingMalnutrition & Refeeding SyndromePost-bariatric patients require lifelong micronutrient supplementation; malabsorption is expected and must be managed long-term
  • Enteral Nutrition (Tube Feeding)Nutritional AssessmentOngoing assessment (weight, tolerance, labs) monitors enteral feeding effectiveness and guides adjustments
  • Total Parenteral Nutrition (TPN)Nutritional AssessmentDaily monitoring of weight, glucose, electrolytes, liver function during TPN assesses nutritional and metabolic response
  • Professional & Legal FrameworkObesity ManagementRA 9173 defines scope of nursing practice; nurses deliver obesity education and comorbidity management within legal scope
  • Professional & Legal FrameworkEnteral Nutrition (Tube Feeding)RA 9173 and NLE standards specify nursing accountability for tube placement verification and aspiration prevention
  • Professional & Legal FrameworkTotal Parenteral Nutrition (TPN)NLE safety-critical TPN rules (central line, pump, never abrupt cessation, glucose monitoring) are core competency areas for Philippine nurses
  • Refeeding SyndromeEnteral Nutrition (Tube Feeding)When starting enteral feeding in malnourished patient: start low rate, advance slowly, monitor PO4/K/Mg daily, give thiamine
  • Refeeding SyndromeTotal Parenteral Nutrition (TPN)Same refeeding precautions apply: slow infusion rate initiation, thiamine supplementation, daily electrolyte monitoring and replacement
  • Obesity ManagementNutritional AssessmentOngoing assessment (weight, comorbidities, labs) monitors obesity management effectiveness; guides pharmacotherapy or surgical decisions
  • Bariatric Surgery NursingEnteral Nutrition (Tube Feeding)Post-bariatric feeding protocol is a modified form of enteral feeding (small frequent meals advancing per tolerance, similar safety principles)

Diagrams

Nutritional & Metabolic Support — Full Concept Hierarchy

Comprehensive mind map showing all major topics in Nutritional & Metabolic Support, organized hierarchically from central concept through assessment, obesity, malnutrition/refeeding, enteral and parenteral nutrition, and bariatric nursing considerations. This map displays the full scope of chapter content and relationships between key concepts.

Nutritional Assessment & Intervention Decision Tree

Decision tree flowchart guiding nurses through nutritional assessment and intervention selection. Starts with assessment parameters, branches to obesity/malnutrition/normal status, then leads to appropriate interventions (oral supplements, enteral feeding, TPN, bariatric surgery) with specific safety checks and monitoring requirements for each pathway. Includes refeeding syndrome precautions and NLE safety-critical TPN rules.

TPN Administration Safety Protocol — Critical Rules for NLE

Step-by-step TPN safety protocol emphasizing NLE-critical rules: CENTRAL line only, aseptic pump technique, never abrupt cessation (taper and hang D10W if delayed), blood glucose monitoring every 4–6 hours, and recognition of air embolism risk (left side, Trendelenburg, Valsalva). Includes monitoring requirements and transition protocol as GI function recovers.

Enteral Feeding Safety — Tube Placement Verification & Aspiration Prevention

Comprehensive enteral feeding safety flowchart covering tube placement verification (X-ray + bedside pH check, never auscultation alone), aspiration prevention (HOB 30–45° during and after feeds), gastric residual checks, medication administration precautions, and complication recognition. Emphasizes the NLE-critical rule: verify before EVERY feed and EVERY medication.

Refeeding Syndrome — Pathophysiology & Prevention in Malnourished Patients

Detailed flowchart showing refeeding syndrome pathophysiology: starvation → feeding stimulus → insulin surge → intracellular electrolyte shift → dangerous hypophosphatemia, hypokalemia, hypomagnesemia. Prevention strategy emphasizes starting LOW and SLOW, giving thiamine first, and aggressive daily electrolyte replacement and monitoring in the first week. This is a high-yield NLE safety topic.

Bariatric Surgery Postoperative Nursing — Complication Recognition & Management

Postoperative bariatric surgery nursing guide emphasizing early leak detection (tachycardia + fever + rising pain = ominous sign), airway management for sleep-apnea-prone patients, VTE prevention, and long-term dumping syndrome prevention education (small meals, low simple carbs, fluids between not with meals, lie down after eating). Includes critical lifelong vitamin B12, iron, folate, calcium, vitamin D, and thiamine supplementation protocol.

Common Micronutrient Deficiencies Post-Bariatric Surgery — Clinical Recognition

Distribution of common micronutrient deficiencies after bariatric surgery. Vitamin B12 deficiency is most prevalent (40%), followed by iron (30%), vitamin D/calcium (20%), and folate/thiamine (10%). Each requires lifelong supplementation and monitoring, with specific clinical manifestations: B12 (paresthesia, ataxia, pernicious anemia), iron (microcytic anemia, fatigue), vitamin D/calcium (bone pain, osteomalacia), and thiamine (Wernicke encephalopathy).

Patient Nutritional Status Transition Model — Assessment to Intervention

State transition diagram showing patient movement through nutritional assessment and intervention pathways. Demonstrates five main pathways: obesity (diet → pharmacotherapy → bariatric surgery → lifelong supplements), normal nutritional status (routine monitoring), mild-moderate malnutrition (oral supplements), GI-intact malnutrition (enteral feeding), and severe malnutrition/starvation (refeeding with thiamine + electrolyte replacement, or TPN via central line with glucose monitoring). Each pathway shows critical decision points and transitions to successful outcome.

Nutritional & Metabolic Support is chapter 4 of 4 in the Gastrointestinal 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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