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Key elements shown in the flowchart:

1. Pulmonary stenosis (RVOTO - Right Ventricular Outflow Tract Obstruction)
2. Right Ventricular Hypertrophy (compensatory)
3. Overriding Aorta (straddles the VSD)
4. Ventricular Septal Defect (VSD)

• Pulmonary stenosis → increased resistance to RV outflow
• RV pressure rises to match or exceed LV pressure
• Right-to-left shunt through the VSD
• Deoxygenated blood passes into the overriding aorta
• Systemic cyanosis (hypoxemia) results
• RV hypertrophy develops as a compensatory response to chronic pressure overload

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Summary of what's shown:

• Heart cross-section with all 4 defects labeled
• Blue = deoxygenated blood | Red = oxygenated blood
• Shows the right-to-left shunt pathway through the VSD into the overriding aorta

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Pyloric Stenosis - Complete Guide for Child Health Nursing

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1. Definition

• The Developing Human - Clinically Oriented Embryology, p.612
• Tintinalli's Emergency Medicine, p.2626

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2. Anatomy

• The pyloric muscularis propria hypertrophies (mainly circular muscle)
• This narrows the pyloric canal
• Mucosal and submucosal edema worsens obstruction
• The stomach becomes markedly distended proximal to the obstruction

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3. Epidemiology / Incidence

• Current Surgical Therapy 14e
• Robbins & Cotran Pathologic Basis of Disease

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4. Etiology & Risk Factors

• Genetic factors - High monozygotic twin concordance; genome-wide association studies have identified genes related to GI development
• Erythromycin / Azithromycin exposure in the first 2 weeks of life (oral or via breast milk) - strongly associated
• Turner syndrome and Trisomy 18 - increased risk
• Young maternal age and prematurity - associated risk factors
• Family history - maternal family history in particular increases risk

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5. Pathophysiology

Hypertrophy of pyloric circular muscle
           ↓
Narrowing of pyloric canal (stenosis)
           ↓
Gastric outlet obstruction
           ↓
Food/milk cannot pass into duodenum
           ↓
Stomach becomes distended with food + secretions
           ↓
Forceful PROJECTILE NON-BILIOUS VOMITING
           ↓
Loss of HCl (gastric acid) in vomitus
           ↓
Hypochloremic, Hypokalemic METABOLIC ALKALOSIS
           ↓
Progressive DEHYDRATION + MALNUTRITION
           ↓
Failure to thrive, weight loss

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6. Clinical Features (Signs & Symptoms)

Cardinal Features:

Vomiting Characteristics (important for nursing assessment):

• Non-bilious (bile-free) - obstruction is above the ampulla of Vater
• Projectile - may shoot several feet
• Non-bloody
• Occurs after feeding, not at birth
• Infant remains alert and hungry after vomiting

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7. Diagnostic Investigations

A. Ultrasound (Gold Standard)

• Pyloric muscle wall thickness ≥ 4 mm
• Pyloric channel length ≥ 16 mm (some sources: ≥ 14 mm)
• Inability of fluid to pass through pylorus during exam

B. Upper GI Series (Barium/Contrast Study)

• Used when ultrasound findings are equivocal
• Shows "string sign" - narrow elongated pyloric channel
• "Shoulder sign" - impression on antrum
• Contrast stays in distended stomach

C. Laboratory Investigations (Metabolic Panel)

D. Clinical Test Feed

• Observe infant feeding: gastric peristalsis from left to right visible
• Palpate relaxed, feeding baby for pyloric "olive" in right upper quadrant

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8. Clinical Images

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9. Medical Management (Pre-operative)

Step 1: Fluid & Electrolyte Correction

• Insert nasogastric tube (8-10Fr) to decompress the stomach - feeds discontinued
• IV fluids: 0.9% Normal Saline with 0.15% KCl in 5% dextrose at 6-7.5 mL/kg/hour
• Two boluses of 20 mL/kg Normal Saline for dehydration
• Maintenance rate: 1.5× normal maintenance
• Check electrolytes every 6-12 hours until normal

Step 2: Monitoring Endpoints Before Surgery

• Chloride ≥ 90-100 mEq/L
• Bicarbonate ≤ 30 mEq/L (bicarbonate > 30 mEq/L = risk for post-op respiratory depression and apnea)
• Wet diapers returning (urine output)
• Correction takes 24-48 hours typically

Warning: Do NOT take infant to anaesthesia with bicarbonate > 30 mEq/L - diminished respiratory drive poses risk of post-operative apnea and respiratory arrest.

• Current Surgical Therapy 14e

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10. Surgical Management - Ramstedt's Pyloromyotomy

Procedure:

1. Approach: Laparoscopic (preferred) OR open (right upper quadrant/periumbilical/supraumbilical incision)
2. Laparoscopic technique: 3 ports - one at umbilicus (with port) + two 3-mm stab incisions without ports
3. Pylorus stabilized with grasper
4. A longitudinal serosal incision is made through the anterior wall of the pyloric canal
5. Muscular layer split from stomach to duodenal side (where muscle softens)
6. Intact submucosa preserved - mucosa should bulge through the myotomy
7. Leak test: 30-60 mL air injected through orogastric tube to confirm:
   • Air passes through pylorus
   • No air escapes through mucosa (rules out perforation)

Post-operative Feeding:

• IV fluids continued until feeds re-established (within 24 hours)
• Ad lib feeding with 60-mL limit - most practical approach
• Most infants discharged within 36 hours of tolerating 2 consecutive feeds
• Early post-op vomiting is normal - gastroesophageal reflux (GOR) is more likely than incomplete myotomy if it persists

---

11. Complications

Surgical Complications:

Medical Complications (if untreated):

• Severe dehydration and shock
• Electrolyte imbalances (metabolic alkalosis)
• Failure to thrive and malnutrition
• Aspiration pneumonia (from repeated vomiting)

---

12. Nursing Management (Child Health Nursing Focus)

A. Pre-operative Nursing Care

• Monitor weight daily (assess weight loss and nutritional status)
• Assess for signs of dehydration: sunken fontanelle, dry mucous membranes, skin turgor, urine output
• Observe and document vomiting: frequency, force, amount, character (non-bilious? projectile?)
• Monitor vital signs including temperature (detect infection)
• Observe for visible gastric peristalsis waves

1. NPO (Nil Per Os) - Discontinue oral feeds; maintain NG tube for gastric decompression
2. IV access - Maintain patent IV line for fluid and electrolyte replacement
3. Fluid monitoring - Strict intake and output chart; monitor urine output (wet diapers)
4. Electrolyte monitoring - Assist with blood draws every 6-12 hours; monitor lab results
5. Positioning - Keep head elevated to reduce aspiration risk
6. Comfort and non-nutritive sucking - Offer pacifier to satisfy sucking needs while NPO
7. Parental education - Explain condition, investigations, surgical procedure, and recovery to parents
8. Emotional support - Reassure anxious parents; encourage bonding

B. Post-operative Nursing Care

• Monitor vital signs every 1-2 hours initially
• Assess surgical wound for signs of infection (redness, swelling, discharge)
• Monitor for return of bowel activity
• Observe feeds for tolerance (frequency of vomiting post-op)
• Assess pain using appropriate infant pain scale (e.g., CRIES scale, NIPS)

1. Pain management - Administer prescribed analgesics; non-pharmacological comfort measures
2. Wound care - Inspect and care for incision site; keep dry and clean
3. Gradual re-feeding - Introduce feeds as per protocol (small, frequent feeds initially)
4. Position - Keep semi-upright after feeds to reduce reflux
5. Monitor for complications - Watch for ongoing vomiting (incomplete myotomy), fever, abdominal distension (perforation)
6. Parental education - Teach parents about post-operative care, feeding technique, wound care, and warning signs

C. Key Nursing Diagnoses

1. Deficient fluid volume r/t persistent vomiting and inability to maintain oral intake
2. Imbalanced nutrition: less than body requirements r/t vomiting and NPO status
3. Risk for aspiration r/t projectile vomiting
4. Acute pain r/t surgical procedure
5. Anxiety (parental) r/t child's illness and hospitalization
6. Risk for infection r/t surgical wound

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13. Differential Diagnosis

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14. Prognosis

• Outcomes after pyloromyotomy are excellent
• Surgery is curative in virtually all cases
• Mortality is extremely rare with proper pre-operative resuscitation
• Long-term GI function is normal

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15. Quick Summary Table

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🏥 NURSING CARE PLAN

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PRIORITY PROBLEM 1

Nursing Diagnosis: Deficient Fluid Volume

---

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PRIORITY PROBLEM 2

Nursing Diagnosis: Imbalanced Nutrition: Less Than Body Requirements

---

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PRIORITY PROBLEM 3

Nursing Diagnosis: Risk for Aspiration

---

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SUPPLEMENTARY NURSING CONSIDERATIONS

Pre-Operative Checklist for Baby Kumari:

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Key Safety Reminders:

⚠️ Do NOT take Baby Kumari to theatre if serum bicarbonate > 30 mEq/L - risk of post-operative respiratory depression and apnea.

⚠️ Pyloric Stenosis is NOT a surgical emergency - adequate pre-operative resuscitation takes priority over urgency of surgery.

⚠️ Vomitus is non-bilious - bilious vomiting in a neonate suggests a different, more urgent diagnosis (e.g., midgut volvulus) and must be escalated immediately.

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Parental Education Points:

1. Explain the diagnosis in simple terms - "the muscle at the exit of the stomach is too thick and blocks food from passing"
2. Reassure that surgery (pyloromyotomy) has an excellent outcome and is curative
3. Explain why Baby Kumari cannot be fed orally and why she appears hungry
4. Teach safe positioning and aspiration precautions
5. Address maternal guilt about not being able to breastfeed during NPO period
6. Discuss expected hospital stay and post-operative feeding

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Tracheoesophageal Fistula (TEF) - Complete Guide for Child Health Nursing

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1. Definition

TEF is the most common birth defect of the lower respiratory tract.

• The Developing Human - Clinically Oriented Embryology, p.576

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2. Embryology (How It Happens)

• Incomplete fusion of lateral tracheoesophageal folds
• Imbalance in growth of cranial and caudal folds
• Deficiency in Sonic Hedgehog (Shh) gene signaling
• Disturbances in apoptosis or epithelial proliferation

---

3. Incidence & Epidemiology

---

4. Classification - Gross Classification (Types A-F)

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5. Associated Anomalies - VACTERL Syndrome

---

6. Pathophysiology

Failure of tracheoesophageal septum to form completely
                    ↓
Abnormal connection (fistula) between trachea and esophagus
                    ↓
┌─────────────────────────────────────────────────────────┐
│                  TWO MAJOR PROBLEMS                      │
└──────────────────────┬──────────────────────────────────┘
                       │
       ┌───────────────┴────────────────┐
       ↓                                ↓
ESOPHAGEAL ATRESIA              FISTULOUS CONNECTION
(Upper pouch blind)             (Trachea ↔ Esophagus)
       ↓                                ↓
Infant CANNOT swallow      Air enters stomach from trachea
       ↓                   (gastric distension)
Saliva pools in pouch       Gastric acid refluxes INTO lungs
       ↓                                ↓
ASPIRATION of secretions    CHEMICAL PNEUMONITIS
       ↓                                ↓
Coughing, choking,          Respiratory distress
cyanosis on feeding         SpO₂ drops
       ↓
Fetus cannot swallow amniotic fluid
→ POLYHYDRAMNIOS (prenatal)

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7. Clinical Features

Prenatal Signs:

• Polyhydramnios (excess amniotic fluid - fetus cannot swallow)
• Absent or small stomach bubble on fetal ultrasound

Postnatal / Neonatal Signs (Classic "3 Cs"):

In H-type TEF (without atresia) - presents LATER:

• Recurrent chest infections / pneumonia
• Coughing after feeds
• Abdominal bloating (air enters stomach)
• May not be diagnosed until weeks/months after birth

---

8. Diagnosis

A. Bedside Test (Most Important First Step)

• Tube coils in the upper esophageal pouch and CANNOT be advanced to stomach
• X-ray shows tube curling back in the mediastinum - diagnostic

B. Chest + Abdominal X-ray

C. Contrast Study

• Only if H-type TEF suspected (esophagus is patent but fistula present)
• Barium swallow may show fistula connection
• Bronchoscopy/esophagoscopy can directly visualize the fistula

D. Echocardiogram (Mandatory Pre-op)

• Identify congenital heart disease
• Identify right-sided vs. left-sided aortic arch (determines surgical approach)
• Identify vascular rings or aberrant vessels

E. Renal and Spinal Ultrasound

• Complete VACTERL workup

F. Complete Blood Count + Metabolic Panel

• Assess for infection (aspiration pneumonia)
• Baseline before surgery

---

9. Grading / Risk Classification (Waterston / Spitz Classification)

---

10. Management

A. Pre-operative (Immediate) Management

1. NPO - Nil by mouth immediately - stop all oral feeds
2. Replogle tube (double-lumen sump suction catheter) inserted into upper esophageal pouch - continuous low-pressure suction to prevent aspiration of secretions
3. Head-of-bed elevation at 30-45° - prevents gastric acid reflux through fistula into lungs
4. IV access - IV fluids + electrolytes for hydration
5. Supplemental oxygen - for respiratory support
6. Antibiotics - broad-spectrum for aspiration pneumonia
7. Echocardiogram + renal/spinal ultrasound - VACTERL workup
8. Transfer to NICU in a tertiary pediatric surgical center

B. Surgical Management

• If infant in good condition: Primary repair within 24-48 hours
• If severe aspiration pneumonia: Gastrostomy first → improve condition → delayed repair

1. Ligation and division of the fistula
2. Primary end-to-end esophageal anastomosis (connecting the two esophageal ends)
3. Trans-anastomotic feeding tube placed under direct visualization
4. Azygos vein typically ligated to gain access
5. Gastrostomy may be placed if anastomotic tension is high (long-gap EA)

C. Post-operative Management

• Mechanical ventilation: low pressure, low volume, high rate
• Minimize neck extension to protect anastomosis
• Trans-anastomotic tube feeds commenced within 24-48 hours
• Contrast esophagram at Day 5-7 to check anastomosis before oral feeds
• Oral feeds once anastomosis confirmed intact

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11. Complications

Early Complications:

Late Complications:

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12. Nursing Management

Pre-operative Nursing Care:

1. Risk for Aspiration r/t pooling of secretions in blind esophageal pouch and gastric acid reflux through fistula
2. Impaired Gas Exchange r/t aspiration pneumonitis and respiratory distress
3. Risk for Deficient Fluid Volume r/t inability to take oral feeds

Post-operative Nursing Care:

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13. Prognosis

• With timely diagnosis and surgical repair, overall survival exceeds 90% in well-resourced settings
• Group I (Spitz) infants have near-normal survival (~97%)
• Prognosis is significantly worsened by major cardiac anomalies, extreme prematurity, and long-gap EA
• Long-term quality of life is generally good, though GERD, dysphagia, and tracheomalacia require ongoing management

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14. Quick Summary

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Quick Reference - All 5 Types:

Nursing Memory Aid - "3 Cs" of TEF presentation:

• Choking on feeds
• Coughing episodes
• Cyanosis (episodic, especially during feeding)

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Signs and Symptoms of Tracheoesophageal Fistula (TEF)

---

Prenatal Signs (Before Birth)

When polyhydramnios is present, an orogastric tube must be passed immediately after delivery to exclude TEF before the first feed.

• Barash Clinical Anesthesia 9e

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At Birth / Immediately Postnatal Signs

1. Inability to Pass Nasogastric / Orogastric Tube

• The most important diagnostic sign
• The tube coils back in the upper esophageal pouch and cannot be advanced to the stomach
• On chest X-ray: tube seen curled at level of T2-T4 in upper mediastinum
• Pathognomonic of esophageal atresia

2. Chest X-Ray Finding

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Classic "3 Cs" of TEF - Cardinal Signs

     ┌──────────────────────────────────────┐
     │         THE 3 Cs OF TEF              │
     │                                      │
     │   1. COUGHING                        │
     │   2. CHOKING                         │
     │   3. CYANOSIS                        │
     │                                      │
     │   Triggered on first / every feed    │
     └──────────────────────────────────────┘

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Complete Signs & Symptoms - System by System

A. Respiratory Signs (Most Prominent)

B. Gastrointestinal Signs

C. General Signs

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Signs by TEF Type - Comparison Table

• Sleisenger & Fordtran's GI and Liver Disease

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How Symptoms Develop - Step-by-Step Mechanism

Baby attempts to feed (milk/fluid given)
              ↓
Fluid CANNOT pass down blind esophageal pouch
              ↓
Fluid overflows → enters trachea via fistula
              ↓
   ┌──────────────────────────────────┐
   │    ASPIRATION INTO LUNGS         │
   └───────────┬──────────────────────┘
               ↓
   ┌───────────┴──────────────────────┐
   ↓                                  ↓
COUGHING / CHOKING            CYANOSIS (↓ SpO₂)
(airway irritation)           (impaired gas exchange)
               ↓
   Gastric acid REFLUXES up through fistula
               ↓
   Chemical PNEUMONITIS (lung inflammation)
               ↓
   Respiratory distress worsens
               ↓
   ATELECTASIS → further ↓ in lung function

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Very First Sign Noticed - Nursing Pearl

"Frothy white bubbles/foam around the mouth and nose of a newborn" is often the FIRST sign that prompts the bedside nurse to suspect TEF - before the first feed is even attempted.

In many cases, it is the nursing staff who first identify the condition when they notice the accumulation of oral secretions during routine newborn care.

• Schwartz's Principles of Surgery 11e

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Signs That Indicate Complications Have Set In

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Differential Diagnosis (Conditions with Similar Signs)

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Summary Table: Signs & Symptoms at a Glance

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