Medical notes

#PREP_2021 #NUTRITION_GIT #Neonatology_Fetology Question 114. A 25-hour-old neonate with abdominal distention is being evaluated. His 34-year-old mother has gestational diabetes controlled by diet; her hemoglobin A1c level is 6.6%. Echogenic bowel was noted on prenatal ultrasonography. He was delivered vaginally with an Apgar score of 9 at 1 and 5 minutes. He has breastfed 6 times with a good latch. He has not yet had a bowel movement. On physical examination, the neonate appears comfortable. He has a prominent white forelock, barrel-shaped chest, moderate abdominal distention, and decreased bowel sounds. Abdominal radiography is performed Of the following, the MOST likely diagnosis for this neonate is: A. Hirschsprung disease B. inadequate oral intake C. necrotizing enterocolitis D. small left colon syndrome Answer is: ✅A. Hirschsprung disease. The neonate’s clinical presentation of delayed passage of meconium and dilated bowel on abdominal radiography, in combination with a white forelock suggests the diagnosis of Hirschsprung disease. type 4 (Waardenburg-Shah syndrome) is always associated with Hirschsprung disease .

💉 INSULIN REQUIREMENT CALCULATION — QUICK CLINICAL GUIDE 📌 Correct insulin calculation helps achieve good glycemic control while reducing the risk of hypoglycemia and hyperglycemia. ⚠️ Insulin requirement varies according to: ✅ Body weight ✅ Type of diabetes ✅ Infection/stress/steroid use ✅ Renal function ✅ Diet & activity level ━━━━━━━━━━━━━━━━━━━━ 🩺 STEP 1 — CALCULATE TOTAL DAILY DOSE (TDD) ✅ Common Starting Formula Type 1 DM → 0.4–0.6 units/kg/day Type 2 DM → 0.3–0.5 units/kg/day Severe infection/steroids/obesity → may need 0.6–1 unit/kg/day ━━━━━━━━━━━━━━━━━━━━ 🧮 EXAMPLE CALCULATION 👨 Patient weight = 68 kg Using 0.5 unit/kg/day 68 × 0.5 = 34 ✅ Total Daily Insulin Requirement (TDD) = 34 units/day ━━━━━━━━━━━━━━━━━━━━ 💉 STEP 2 — DIVIDE INSULIN ✅ Basal–Bolus Regimen 🔹 50% Basal insulin 🔹 50% Premeal (Bolus) insulin For this patient: Basal = 17 units Bolus = 17 units ━━━━━━━━━━━━━━━━━━━━ 🍽️ STEP 3 — DIVIDE PREMEAL INSULIN Usually divided before: 🍳 Breakfast 🍛 Lunch 🌙 Dinner Example Distribution Meal Insulin Breakfast 6 units Lunch 6 units Dinner 5 units ✅ Final regimen: 💉 (17) + (6 + 6 + 5) OR written clinically as: 💉 Glargine 17 U HS 💉 Regular/Aspart: 6-6-5 U before meals ━━━━━━━━━━━━━━━━━━━━ 🔄 HOW TO ADJUST INSULIN DAILY ✅ Simple Bedside Adjustment Rule If sugars remain high → increase dose If hypoglycemia occurs → decrease dose Common Practical Method ➕/➖ 2 Units Rule Fasting sugar high → adjust basal insulin ±2 U Premeal sugars high → adjust corresponding meal dose ±2 U ━━━━━━━━━━━━━━━━━━━━ 🧮 PRACTICAL EXAMPLE Current Regimen: 💉 (12 + 12 + 10) + 20 Meaning: Breakfast → 12 U Lunch → 12 U Dinner → 10 U Basal insulin → 20 U ━━━━━━━━━━━━━━━━━━━━ 📈 IF SUGAR BEFORE DINNER IS HIGH ➡️ Increase lunch insulin by 2 units New regimen: 💉 (12 + 14 + 10) + 20 ━━━━━━━━━━━━━━━━━━━━ 📉 IF FASTING SUGAR IS LOW ➡️ Reduce basal insulin by 2 units New regimen: 💉 (12 + 12 + 10) + 18 ━━━━━━━━━━━━━━━━━━━━ ⚠️ IMPORTANT CLINICAL POINTS ✅ Check glucose regularly ✅ Adjust gradually (usually 2 units at a time) ✅ Avoid aggressive correction ✅ Consider renal failure & elderly patients ✅ Teach hypoglycemia symptoms ━━━━━━━━━━━━━━━━━━━━ 🚨 HYPOGLYCEMIA WARNING SIGNS ⚠️ Sweating ⚠️ Tremor ⚠️ Palpitations ⚠️ Confusion ⚠️ Seizure ━━━━━━━━━━━━━━━━━━━━ 🧠 EASY MEMORY RULE “50–50 RULE” 💉 50% Basal 💉 50% Bolus AND “±2 RULE” 📈 High sugar → Increase by 2 U 📉 Low sugar → Decrease by 2 U ━━━━━━━━━━━━━━━━━━━━ ❤️ GOOD INSULIN THERAPY IS: ✅ Individualized ✅ Gradual ✅ Frequently reassessed ✅ Based on glucose pattern — not single reading https://t.me/clinicalnote

For infants whose mothers are HBsAg-positive, hepatitis B immune globulin (HBIG) and hepatitis B vaccine should be given with in 12hrs after birth https://t.me/clinicalnote

Screening with endovaginal ultrasound for a short cervix and treating those with a cervical length of <2 cm with daily vaginal progesterone is an option for all pregnant women to reduce the rate of premature birth https://t.me/clinicalnote

Breastfeeding jaundice = inadequate milk intake → dehydration and increased enterohepatic circulation (first week). Breast milk jaundice = thriving infant with persistent unconjugated jaundice after the first week. https://t.me/clinicalnote

Pulse oximetry should be applied to the right hand (preductal site) during neonatal resuscitation. https://t.me/clinicalnote

The three most important initial steps after birth are warmth, airway positioning, and effective ventilation. https://t.me/clinicalnote

Todd's paralysis is a neurological condition experienced by individuals with epilepsy, in which a seizure is followed by a brief period of temporary paralysis. https://t.me/clinicalnote

Bag and mask ventilation is contraindicated in newborn resuscitation with clinical suspicion of tracheoesophageal fistula, diaphragmatic hernia, and lung malformation. These conditions can interfere with effective ventilation using a bag and mask. https://t.me/clinicalnote

Treatment of acute symptomatic neonatal or infant hypoglycemia includes IV administration of 2 mL/kg of 10% dextrose in water (D10W), followed by a continuous infusion of glucose at 6-8 mg/kg/min, adjusting the rate to maintain blood glucose levels in the normal range. If hypoglycemic seizures are present, some recommend a 4 mL/kg bolus of D10W. Treatment of asymptomatic hypoglycemia in at-risk infants usually includes enteral feedings rather than parenteral glucose. If symptoms develop or the hypoglycemia persists despite enteral feedings, IV glucose is indicated. Dextrose gel (40% at 400 mg/kg) administered into the mouth may be an alternative to enteral feedings if breast milk or if formula is not available. https://t.me/clinicalnote

Kawasaki disease is a form of vasculitis that affects children < 5 years of age. The disease starts with fever of ≥ 5 days, conjunctivitis, erythema of the lips and orla mucosa, nonspecific erythematous exanthem, swelling and erythema of the hands and feet, and cervical lymphadenopathy. Children with Kawasaki disease are at risk of developing coronary artery aneurysms. https://t.me/clinicalnote

Scarlet fever (scarlatina) follows a streptococcal infection and is characterized by a fine red papular exanthem on the trunk and extremities and redness of the palms and soles with eventual desquamation

Group A Streptococcus may cause scarlet fever (scarlatina), characterized by a diffuse erythema with numerous, small papular (“sandpaper-like”) elevations. It begins in the groin and axillae, expanding rapidly to cover the trunk and then the extremities, typically sparing the palms and soles. The rash is most intense in the skin folds of the inguinal, axillary, and antecubital areas.

Infants born to mothers with hyperparathyroidism often develop transient hypoparathyroidism, resulting in hypocalcemia and hyperphosphatemia

The characteristic chest x-ray findings in infants with respiratory distress syndrome include reduced lung volumes, air bronchograms, reticulogranularity, and lung opacification. The x-ray appearance is frequently characterized as having a homogenous ground glass appearance.

The newborn with cystic fibrosis generally is asymptomatic. The most common manifestation, meconium ileus, occurs in 15%–20% of CF patients. The ileum is completely obstructed with meconium, which results in intestinal obstruction. The meconium plug syndrome also is seen with an increased frequency in infants with cystic fibrosis, but it is less specific than meconium ileus. Sweat chloride testing in suspected cases of cystic fibrosis has always been troublesome in the newborn period but DNA testing is now available and is 90%–95% sensitive. In the United States, some states have instituted routine newborn screening for cystic fibrosis.

Beckwith-Wiedemann syndrome : omphalocele, severe hypoglycemia, macrosomia, macroglossia

Fever + Petechial/purpuric rash rapid progressive+ GCS low + shock = meningococcemia So do immediately→ blood culture + immediate IV antibiotics

Osteogenesis Imperfecta (OI) : “Brittle bone disease” A genetic disorder of connective tissue characterized by bone fragility due to defective type I collagen. Etiology • Mostly autosomal dominant • Mutations in COL1A1 / COL1A2 genes • Leads to ↓ quantity or abnormal quality of type I collagen ⸻ Classic Clinical Features Mnemonic: B L U E • Bones fracture easily (minimal trauma) • Ligament laxity & joint hypermobility • Unusually blue sclera • Ear problems → hearing loss (conductive/sensorineural) Other features • Short stature • Bone deformities • Scoliosis • Dentinogenesis imperfecta (opalescent teeth) • Wormian bones in skull (X-ray) ⸻ Sillence Classification (Simplified) Type Severity Key Features Type I Mild Blue sclera, normal stature, fractures in childhood Type II Lethal Multiple fractures at birth, severe deformities Type III Severe Progressive deformity, very short stature Type IV Moderate Normal sclera, fractures, mild deformity ⸻ Diagnosis • Clinical features + family history • X-ray: osteopenia, fractures, Wormian bones • Genetic testing (confirmatory) • DEXA scan → low bone density ⸻ Management • No cure → supportive & preventive • Bisphosphonates (e.g., pamidronate) ↓ fracture rate • Calcium & Vitamin D • Physiotherapy • Orthopedic surgery (rodding) • Hearing evaluation • Genetic counseling ⸻ Key Exam Pearls • Blue sclera + recurrent fractures → think OI • Differentiate from child abuse • Normal calcium, phosphate, ALP usually