MTB - Pediatrics Flashcards
Routine newborn screening tests
PKU
Galactosemia
Hypothyroidism
erythema toxicum
firm, white-yellow pustules with erythematous base, peak on 2nd DOL; self-limited
Sturge Weber syndrome
AV malformation causing port wine stain along with seizures, MR and glaucoma
Tx. port wine stain
pulsed laser therapy
Tx. hemangioma
steroids or pulsed laser therapy if large or interferes with organ function; normally involutes by age 9
what are pre-auricular tags/pits associated with?
Hearing loss
Genitourinary abnormalities
what tests should be ordered if baby has preauricular tags/pits?
Hearing Test
Kidney USG
Coloboma of the Iris
defect in the iris; assoc. with CHARGE
CHARGE
Coloboma Heart Defects Atresia of nasal coanae Retarded growth Genitourinary abnormalities Ear abnormalities
Aniridia - what is it and what is it assoc. with
Absence of Iris
Assoc. with Wilms tumor
Screening for Wilms tumor
abdominal USG Q3 months until age 8
Dx. neck mass, lateral to the midline
Branchial Cleft Cyst
- remnant of embryonic development
Mngmt. Branchial Cleft Cyst
Infected? abx
Large? surgery
Dx. neck mass in the midline with moves with swallowing or tongue protrusion
thyroglossal duct cyst
Tx. thyroglossal duct cyst
- Surgery
2. Get thyroid scans and TFTs pre-op
what is an umbilical hernia in a newborn assoc. with
congenital hypothyroidism
what screening test should be done if baby has umbilical hernia
TSH
Management: Cryptorchidism
No tx until age 1
- hormones - bhcg or testosterone
- orchiopexy
what is hypospadias assoc. with
undescended testes
inguinal hernias
Mngmt. Epispadias
Surgical eval. for bladder exstrophy
Large, newborn baby is jittery after his bath. On exam he is plethoric and tremulous; there is a pansystolic murmur heard. His delivery was complicated by shoulder dystocia - likely diagnosis?
Infant of Diabetic mother
Lab abnormalities in an Infant of a Diabetic Mother
hypoglycemia hypocalcemia hypomagnesemia hyperbilirubinemia polycythemia
IODM is assoc. with
- cardiac abnormalities (VSD, ASD, truncus)
2. small left colon syndrome
best initial test for resp. distress in newborn
CXR
best initial treatment for resp. distress in newborn
- oxygen
- give nasal CPAP if O2 requirements are high enough
- consider empiric abx
in a newborn with resp. distress, if hypoxia does not improve with O2 what should you be considering?
congenital heart defects –> cardiac causes
Term newborn that was delivered by C/S presents with tachypnea - dx?
transient tachypnea of newborn
Dx. transient tachypnea of newborn
CXR
Signs of TTN on CXR
- air trapping
- fluid in fissures
- perihilar streaking
Tx, TTN
min. O2
Tx. Meconium aspiration
PPV
High frequency ventilation
Nitric oxide therapy
ECMO
what dz’s can cause meconium plugs
- CF
- Small left colon (IODM)
- Hirschsprung
- Maternal drug abuse
When is hyperbilirubinemia pathologic? (5)
- first DOL
- bilirubin rises > 5 mg/dl/day
- bilirubin > 12 mg/dl in term infant
- lasts greater than 2 weeks old
- direct (CB) bili > 2 mg/dl at any time
what should you consider if there is prolonged jaundice (>2 weeks) and NO CB?
- UTI /infection
- bilirubin conjugation defects
- hemolysis
- intrinsic RBC mb or enzyme defects
what should you consider if there is prolonged jaundice and elevated CB?
cholestasis
- get LFTS and ultrasound
when do you use phototherapy for treatment of hyperbilirubinemia?
if bili is > 10-12 mg/dl
signs of kernicterus
hypotonia seizures opisthotonos delayed motor skills choreoathetosis sensorineural hearing loss
what entails a sepsis work-up?
- CBC w/ diff
- blood culture
- urinalysis/culture
- CXR prior to antibiotics
MCC of early onset sepsis (first 24 hours)
pneumonia
- Group B strep
- E.coli
- H.flu
- Listeria
MCC of late onset sepsis (> 7 days)
meningitis and bacteremia
- Staph aureus
- E.coli
- Klebsiella
- Pseudomonas
Tx. neonatal sepsis
ampicillin + gentamicin until 48-72 hr cultures negative
if meningitis, add cefotaxime
MC extraneural complication of myelomeningocele
involvement of genitourinary system (bladder dysfunction)
extraneural complications of myelomeningocele
- bladder dysfunction
- GI tract dysfunction - fecal incontinence due to external anal sphincter dysfunction
- fractures of lower extremities
genera diagnostic test for all TORCHES infections
elevated total cord blood IgM
in NICU, infant noted to be jittery and has repetitive sucking movements, tongue thrusting and brief apneic spells; the jitteriness fails to subside with stimulus - dx?
seizures
Diagnostic Workup in Neonatal Seizures
- EEG
- CBC, electrolytes, calcium, Mg, glucose
- Amino acid assay and urine organic acids
- Infectious causes:
- TORCH cord blood IGM, bcx, urine cx, LP - if preterm, USG of head to look for IVH
Tx. acute neonatal seizures
lorazepam or diazepam rectally
which drugs cause respiratory and CNS depression in the newborn?
Anesthetics
Barbiturates
Mg sulfate (resp)
Effect of phenobarbital on neonate
vitamin K deficiency
Effect of sulfonamides on neonate
displace bilirubin from albumin = hyperbili
Effect of NSAIDs on neonate
premature closure of PDA
Effect of ACEI on neonate
craniofacial abnormalities
Effect of isotretnoin on neonate
facial /ear anomalies
CHD
Effect of Phenytoin on neonate
Hypoplastic nails
Typical Facies
IUGR
Effect of warfarin on neonate
facial dysmorphism
chondrodysplasia
Diagnostic W/U in baby born with trisomy 21
- Hearing exam
- ECHO
- GI - TEF, duodenal atresia
- TSH - hypothyroidism
Dx. W/U in baby born with trisomy 18
- ECHO
2. Renal USG - polcystic kidneys, ectopic/double ureter
Dx. W/U in baby born with trisomy 13 (Patau)
- ECHO
2. Renal USG - polycystic kidneys
WAGR syndrome
Wilms tumor
Aniridia
GU anomalies
Retardation
Dx. W/U in baby born with Klinefelters
Testosterone levels - hypogonadism and hypogenitalism
- may require testosterone replacement at age 11-12
Dx. W/U in baby born with Turner’s syndrome
- renal US: horseshoe kidney, double renal pelvis
- Cardiac US: bicuspid aortic valve, coarctation of aorta
- TFTs: hypothyroidism
what psych disorder are patients with Fragile X prone to?
ADHD
MCC of mental retardation in boys
Fragile X syndrome
CF: Beckwith Wiedemann syndrome
macrosomia macroglossia pancreatic B cell hyperplasia (hypoglycemia) large kidneys neonatal polycythemia omphalocele
Dx. W/U in baby born with Beckwith Weideman syndrome
increased risk of abdominal tumors
–> US and serum AFP every 6 months through 6 yo to look for Wilms tumor and hepatoblastoma
CF. Angelmann syndrome
MR
inappropriate laughter
absent speech or < 6 words
ataxia and jerky arm movements (puppet gait)
recurrent seizures (80% chance of epilepsy)
Pierre Robin sequence - associations (1), CF (2) and diagnostic W/U (3)
- fetal alcohol syndrome, Edwards syndrome
- mandibular hypoplasia, cleft palate
- monitor airway for obstruction over first 4 weeks
best indicator for acute malnutrition
height and weight < 5th percentile
DDX for normal weight gain in a child but decrease length/height
GH or thyroid hormone deficiency
excessive cortisol secretion
skeletal dysplasias
C/I to breast feeding
- Infections: HIV, CMV, HSV if lesions on breast, HBV until infant is immunized, TB
- Breast cancer
- Substance abuse
- Drugs: antineoplastics, iodide/mercurials, lithium, chloramphenicol, nicotine, alcohol
baby age: cruising, says 1 or more words, plays ball
12 months
baby age: builds 4 cube tower, walks down stairs, say 10 words and can feed self
18 months
Baby age: can walk downstairs alternating feet, rides tricycle, knows age and sex and understands taking turns
36 months (3 yo)
baby age: has pincer grasp, creeps and crawls, knows own name
9 months
baby age: builds 3 cube tower, walks alone, makes lines and scribbles
15 months
baby age: builds 7 cube toward, runs well, goes up and down stairs, jumps with two feet, threads shoelaces, handles spoon, says 2-3 sentences
24 months
up to what age is bedwetting “normal”
age 5
Enuresis
involuntary voiding of urine, occuring atleast 2x/week for atleast 3 months in children over age 5
diurnal enuresis
MC among girls; higher rate of UTIs
MCC - UTI, DI, seizure, constipation, abuse
best initial test for enuresis
urinalysis
best initial therapy for enuresis
behavioral therapy
- if this fails: imipramie, desmopressin
Encopresis
unintentional or involuntary passage of feces in inappropriate settings, in children > 4 yo
best initial test: encopresis
AXR
- distinguishes between retentive and nonretentive
best initial therapy encopresis
retentive: disimpaction, stool softeners, behavioral modification
non retentive: behavioral modification
C/I to MMR vaccine
anaphylaxis to neomycin or gelatin pregnancy immunodeficient state thrombocytopenia recent IVIG treatment
egg allergy contraindicates to what vaccine
yellow fever only
- MMR no
- influenza: give inactivated vaccine
Measles exposure prophylaxis in:
1) 0-6 month old
2) 6-12 month old
3) > 12 months old
- IG only
- IG + vaccine with booster at 12-15 months
- vaccine only w/in 72 hours of exposure
hep b prophylaxis in infant born to hep b positive mom
HBIG + vaccine at birth, 1 month and 6 months
details about DTap Vaccine
total 5 doses prior to school (last dose 4-6 years)
TdaP booster once in adolescence
Td at age 11-12 and every 10 years
meningococcal conjugate vaccine
given at age 11-12 or at age 15
preferred method of identifying small joint effusions
USG
transient synovitis of the hip
young boy presents with pain in the hip and refusal to walk; he is febrile. P/E: one hip is kept externally s
what antibiotic is linked to pyloric stenosis
erythromycin
- also usage of macrolides in breast feeding women
fatigued child with difficulty breathing and apneic spells
bronchiolitis
precocious pseudo-puberty
early onset puberty caused by a gonadotrophin-independent process, typically an excess of sex steroids.
- may be caused by late onset congenital adrenal hyperplasia
sequence of events in precocious puberty due to hypothalamic dysfunction
testicular enlargement –> penis enlargement –> pubic hair growth –> growth spurt
manifestation of 47 XYY karyotype
severe acne
you suspect infant botulism –> what do you look for on exam?
gag reflex –> frequently impaired
abx active against pseudomonas
cefepime, ceftazidime amikacin carbapenems Zosyn aztreonam colistin - should start two drugs when treating empirically for pseudomonas
neonatal polycythemia
peripheral venous Htc > 65%
tx. neonatal polycythemia
adequate hydration
partial exchange transfusion
pathogenesis of infant botulism
ingestion of C. botulinum spores from environmental dust (california, PA and Utah - esp. in construction and farming sites) and from ingestion of raw honey
Tx. infant botulism
human derived botulism immune globulin
when do you use equine-derived botulinum antitoxic
foodborne or wound botulism; usually avoided in infants
management of bronchiolitis case
respiratory isolation
trial of inhaled bronchodilators (albuterol/epinephrine)
steroids are NOT indicated
standard of diagnosis for bronchiolitis
primarily clinical but can use;
- best initial test = CXR
- RSV antigen detection in nasal or pulm secretions (IFA or ELISA) [most accurate test]
alt: NAAT testing
complications of RSV bronchiolitis
apnea (esp. < 2 mos old)
respiratory failure
RSV bronchiolitis associated with development of what disease(s)
AOM in 20% of children
reactive airway disease in 30% of children
idiopathic thrombocytopenic purpura in children - management
symptomatic pts with mod-severe thrombocytopenia (<30 000) should be tx. with corticosteroids and/or IVIG
Tx. lead poisoning with levels between 45-69
DMSA (Succimer) - PO
if they cannot tolerate PO –> IV EDTA
Tx. lead poisoning with levels > 70
IM Dimercaprol PLUS IV EDTA
Earliest sign of puberty in males
nocturnal increase in the LH surge followed by a daytime increase in the levels of gonadotrophins and testosterone levels; on exam, enlargement of the testes
constitutional pubertal delay
delayed puberty (>14 yo)
retarded bone age
positive family hx
absence of any systemic disorders
slipped capital femoral epiphysis - in children younger than age 10 is associated with what other disorders?
metabolic disorders, including hypothyroidism, panhypopituitarism, hypogonadism, renal osteodystrophy, GH abnormalities
treatment: SCFE
immediate internal fixation with a single screw
concurrent otitis media and purulent conjunctivitis
nontypeable H.flu infection
adenovirus infection
upper respiratory sx
nonpurulent conjunctivitis
gastroenteritis
otitis media
MCC of acute otitis externa
pseudomonas
treatment: AOM
first line: 10 days, high dose amoxicillin
second line: if recurrence w/in same month - amoxicillin-clavulanic acid
diagnostic criteria for NF1 (2 or more of):
- first degree relative with NF1
- > 6 CALS of 5 mm in greatest diameter (children) or 15 mm(adult)
- presence of >2 neurofibromas, Lisch nodules, optic glioma, bone dysplasia or axillary freckling
if you suspect a diagnosis of NF1 in a child - what should you order next?
immediate ophthalmologic evaluation
C/I to DTaP vaccine
- history of anaphylaxis to previous DTaP
2. history of encephalopathy within 7 days of admin of previous DTaP vaccine
goal of treating strep pharyngitis with antibiotics
to reduce symptom duration and severity
decrease spread to close contacts
prevent acute rheumatic fever
clinical manifestations of refeeding syndrome
arrhythmias
congestive heart failure (pulm edema, peripheral edema)
seizures
Wernicke encephalopathy
what electrolyte abnormalities are common in refeeding syndrome
- decreased phosphorus, potassium and Mg
- decreased serum thiamine
- increased sodium and water retention
max percentage of Hb A level in sickle cell beta (+) thalassemia
25% (vs. 60% in sickle cell trait)
varicella vaccination of household contacts of transplant recipients
safe and recommended
- monitor for development of rash in patient - if a rash develops, isolate the patient
preschool age pt presents with symptoms of pneumonia; CXR shows focal lung findings. MCC (1)? Treatment (2)
MCC - strep pneumo
Tx. high dose amoxicillin
older child presents with symptoms of pneumonia. CXR shows bilateral interstitial infiltrates. MCC (1) Tx?
MCC - mycoplasma
Tx. azithromycin
proper management of child < 24 mo with first UTI
renal and bladder USG to evaluate for anatomic abnormalities; tx. with 10-14 days of abx and monitor closely for recurrence
indications for voiding cystourethrogram
1) abnormal findings on USG i.e. hydronephrosis, VUR, renal scarring, obstructive uropathy
2) recurrent UTIs (>2 febrile UTIs)
3) first febrile UTI is any of these are present: fam hx of renal dz, poor growth, HTN or organism other than E.coli
Tx. bacterial conjunctivitis
erythromycin ointment
sulfa drops
polymyxin/trimethoprim
FQs should be reserved for contact lens wearers
Tx. cryptorchidism
orchiopexy before age 1
- if not descending by 6 months unlikely to descend
complications of cryptorchidism
inguinal hernias
testicular torsion
subfertility
testicular cancer
Tx. Croup
- humidified oxygen
2. nebulized epinephrine and corticosteroids
Management Epiglotitis
- transfer to hospital/OR
- consult ENT /anesthesia
- Intubate
- Antibiotics –> Ceftriaxone and Steroids
- Consider rifampin prophylaxis for household contacts
DIff. between tracheitis and epiglotitis
tracheitis does not have sx of drooling or dysphagia but does have brassy cough with fever and respiratory distress; epiglotitis does not have a cough
MCC of tracheitis and treatment
Staph aureus
Tx. anti-staph abx
Tx. angioedema
steroids, epinephrine
MC sites of foreign body aspiration
- children < 1 yo
- children > 1 yo
- trachea, right mainstem bronchus
2. larynx
next step in management in suspected foreign body aspiration in pt with respiratory distress
bronchoscopy
recurrent pulm infections in a young child should raise suspicion for…
previously undiagnosed aspiration
- get a CXR to look for post-obstruction atelectasis or visualize foreign body
best prevention against bronchiolitis
breast feeding
- colustrum particularily
who should receive pavalizumab prophylaxis
pts with bronchopulmonary dysplasia
preterm infants
2 month old infant presents with insiduous onset of nasal congestion and staccato cough. PMHX is positive for conjunctivitis at birth. Labs show peripheral eosinophilia - Dx? Tx?
Chlamydia trachomatis
Tx. erythromycin 14 days
outpatient management of pneumonia in children
amoxicillin
alt. cefuroxime, amoxi-clav
inpatient management of pneumonia in children
IV cefuroxime
- if staph aureus: add Vanco
- if complicated (empyema, abscess): add Clinda
criteria for hospitalization for pneumonia in children
O2 sat < 92% dehydration RR > 50 /min toxic appearance complications - empyema, effusion failure of outpatient therapy
best initial test and most specific to diagnose CF
sweat chloride test
- 2 elevated levels (>60) on seperate days
signs and symptoms that may warrant a CF work-up
- meconium ileus
- failure to thrive (malabsorption)
- rectal prolapse
- persistent cough in first year of life w/ copious purulent mucus
- undescended testes, absent vas deferens (infertility)
- allergic bronchopulmonary aspergillosis
newborn screening for CF
determines level of immunoreactive trypsinogen
Ivacaftor
approved for patients with CF who are greater than 6 yo and carry atleast one copy of G551D mutation
what treatments in CF have been shown to improve survivial
- Ibuprofen - reduces inflammatory lung response
- azithromycin - slows rate of decline of FEV1 in pts < 13 yo
- antibiotics during exacerbations
antibiotics to treat mild CF
macrolides
TMP-SMX
Ciprofloxacin
antibiotics to treat documented infection with pseudomonas in CF pt
Zosyn
Ceftazidime
antibiotics used to treat resistant pathogens in CF
inhaled tobramycin
MC symptoms of acyanotic CHD
congestive heart failure
MC acyanotic CHD
VSD, ASD, PDA, AS, coarctation, AV canal, PS
when will CHDs that rely on a patent ductus typically present
within 1 month of life
when will infants with L–>R shunting lesions typically present
at 2-6 months
Pt presents with shock, tachypnea and cyanosis. His cyanosis and hypoxemia do NOT respond to oxygen delivery - what should you be considering?
congenital heart disease
signs of CHD in infants
feeding difficulty
sweating while feeding
rapid respirations
easy fatigue
what abnormalities can be seen on exam in a pt with CHD
- UE HTN or LE hypotension
- decreased femoral pulses (L sided lesions)
- facial edema, hepatomegaly
- heart sounds
murmurs that may suggest CHD
pansystolic murmur any grade > 3/6 PMI at upper left sternal border harsh murmur early midsystolic click abnormal S2
features of an innocent murmur
- fever, anxiety or infection in history
- systolic only
- grade < 2/6
best initial test for dx. CHD
CXR and EKG
most specific test for dx CHD
echo
increased pulmonary vascular markings are seen in which CHD?
transposition of great arteries
hypoplastic left heart syndrome
truncus arteriosus
harsh, holosystolic murmur over LLSB +/- thrill
loud pulmonic S2
VSD
- >50% of cases close on their own w/in first 6 months
surgical repair of VSD - indications
failure to thrive
pulmonary HTN
R–>L shunt > 2:1
loud S1, wide fixed splitting of S2
systolic ejection murmur along LUSB
ASD
- majority are asx, secundum type and close by age 4
which types of ASD require surgery
primary and sinus types of ASD
PFO if paradoxical embolus gone through
Tx. pulmonary stenosis
PGE1 infusion after birth
Attempt balloon valvuloplasty
who should receive abx prophylaxis in endocarditis
- prosthetic valves
- previous endocarditis
- CHD - unrepaired or persistent defect
- cardiac transplant pts with valve abnormalities
in every pediatric patient presenting with HTN - what should you consider?
renal etiology
best initial anti-hypertensive meds in children
diuretic or BB
MCC of acute diarrhea in infancy
rotavirus
MCC of bloody diarrhea in children
campylobacter ameoba (E.histolytica) Shigella E.coli Salmonella
Best initial test in acute diarrhea
Stool examination for:
- cultures with blood and leukocytes
- C.diff toxin
- ova/parasites
Tx. Shigella
Trimethoprim/Sulfamethoxazole
Tx. campylobacter
self limiting
- erythromycin may speed recovery and reduce carrier state
Tx. Salmonella
only if pt is < 3 months old, has disseminated disease or if patient has S.typhi
Tx, E. Histolytica or Giardia
Metronidazole
HUS
young child presents 5-10 days after E.coli diarrhea with pallor (anemia), weakness, oliguria and acute renal insufficiency. Labs show anemia, leukocytosis, negative Coomb’s, low platelets, hematuria and proteinuria
Tx. HUS
supportive
HTN -> acute = CCB, chronic = ACEi
when do you give a transfusion of PRBCs in HUS
if Hb < 6 and Hct < 18%; transfuse until Hb is between 8-9
indications for dialysis in HUS
- sx of uremia
- BUN > 80
- fluid overload that cannot be managed medically
- hyperkalemia + acidosis
Dx. giardiasis as a cause of chronic malabsorption
duodenal aspirate/ biopsy or immunoassay
Fat malabsorption
- best initial screen
- best confirmatory test
- Sudan black stain
2. 72 hour fecal stool fat (gold standard)
best initial test for protein malabsorption
spot stool alpha 1 anti-trypsin level
best initial diagnostic test for celiac disease
antiendomysial and antigliadin antibodies
most specific test for celiac disease
histology on biopsy
best initial test in malrotation/volvulus
next step in management?
- Abdominal USG or barium enema
2. emergent surgery
best initial test for intermittent, painless rectal bleeding in a toddler
Tc 99m pertechnetate scan
Intussusception
- best initial test
- confirmatory/exclusion test
- diagnostic/treatment test
- plain XR
- abdominal US
- air enema
Tx. cystitis (pediatrics)
TMP-SMX
Amoxicillin
Tx. pyelonephritis
IV ceftriazone or
ampicillin + gentamycin
antibiotic prophylaxis for VUR
TMP-SMX or nitrofurantoin
- use for first year following diagnosis of any grade VUR, esp. in younger infants to prevent kidney scarring
post-traumatic hematuria
in a child, any level should be investigated with a CT scan
DOC in acute post-strep GN
penicillin
supportive care
Dx. tests to order in acute post-strep GN
UA: RBC, RBC casts, protein, PMNs
low C3
positive throat culture or ASO titre
most specific test: anti-DNase antigen
adolescent patient presents with gross hematuria after URI or GI illness; W/u shows: mild proteinuria, HTN, normal C3 - DX?
IgA Nephropathy
hearing difficulties and asymptomatic microscopic hematuria following URI; strong family history
Alport’s disease
MC form of persistent proteinuria in children
orthostatic proteinuria
- rule this out before any other evaluation is done
CF: Nephrotic syndrome
Proteinuria (>40 mg/m2/hour) Hypoalbuminemia (<2.5) Edema Hyperlipidemia C3/C4 normal
Tx. Nephrotic syndrome
- supportive care: Na and fluid restriction
2. Oral prednisone
Tx. if a patient with nephrotic syndrome relapses after oral steroids
cyclophosphamide
cyclosporine
high dose pulsed methylpred
MC complications of nephrotic syndrome
- infection - SBP; immunize against pneumococcus and varicella
- increased risk of thromboembolism
CF: CAH in an infant
ambiguous female genitalia hyperkalemia hyponatremia hypoglycemia dehydration vomiting
CAH
1) best initial test
2) definitive diagnostic test
1) increased 17OH progesterone
2) 17OH progesterone before and after IV bolus of ACTH
Tx. CAH
hydrocortisone
fludrocortisone if salt losing
Management: Kawasaki Dz
- IVIG + high dose ASA
- EKG, ECHO - get at baseline, at 2-3 weeks and 6-8 weeks
- add warfarin if platelets extremely high (1 million)
HSP is associated with..
intussusception
arthritis
GN/nephrosis - monitor BP and UA weekly for first two months
Diagnostic Testing in HSP
- increased plts, WBCs, ESR, IgA and IgM
- anemia
- anticardiolipin or antiphospholipid abs
- urine: RBCs, WBCs, casts, albumin
- definite dx: skin biopsy
Tx. HSP
supportive
- if intestinal or renal complications –> steroids
- if anticardiolipin or antiphospholipids +, give ASA
physiologic anemia in newborn
Term infants, nadir at 12 weeks (Hb 9-11)
Preterm infants, nadir is at 3-6 weeks (Hb 7-9)
therapy duration when treating iron deficiency anemia with ferrous sulfate
continue for 8 weeks after blood value normalizes
when do you transfuse in cases of sickle cell anemia
symptomatic anemia –> SOB or chest pain
when do you do an exchange transfusion in sickle cell
life threatening complications i.e. stroke, acute chest syndrome, splenic crisis
before high risk surgeries
Indications for Hydroxyurea
- > 3 episodes/crises per year
- symptomatic anemia
- life threatening complications
Routine care in Sickle Cell patients
- Penicillin prophylaxis from 3 mos - 5 yo
- Immunizations
- Daily folate supplementation
CF: beta thalassemia major
Progressive anemia, hypersplenism, cardiac decompensation
Expanded extra medullary spaces due to extra medullary hematopoiesis
Hepatosplenomegaly
Best initial and most specific test for beta thalassemia major
Hemoglobin electrophoresis
Lab features in beta thalassemia major
Severe microcytic anemia with markers of hemolysis (LDH, bilirubin, increased serum ferritin and transferrin)
Tx. Beta thalassemia major
- Transfusion therapy to maintain Hb > 9g/dL
- Iron chelation therapy with deforaxamine plus vitamin C
- Splenectomy
- BMT is curative
Routine care in beta thalassemia
Folate supplementation
Vaccinations
Growth hormone - excess iron is related to GH deficiency
MCC of bleeding in children
Thrombocytopenia - platelet level should be first test in children
In a mixing study, if lab prolongation is corrected….
Deficiency of clotting factor
In mixing studies, if lab prolongation is not corrected….
An inhibitor is present
- MC inhibitor within in hospital patients is heparin
In mixing studies, if it is more prolonged with clinical bleeding ….
Antibody against a clotting factor is present ESP factor VIII, IX OR XI
In mixing study, if there is no clinical bleeding but both PTT and mixing study are prolonged…
Lupus anticoagulant is present
Tx. Hemophilia A
Minor bleeding: Desmopressin + aminocaproic acid or tranexamic acid Major bleeding (into joints): replace factor VIII
Tx. Hemophilia B
Major or minor bleeding tx with factor IX concentrates
Tx. Von willebrands disease
Minor bleeding: desmopressin
Major bleeding: plasma derived vWF concentrates with factor VIII
Tx. Of ITP in children
If skin sx only - no treatment, observe only
If bleeding - 1) prednisone 2) IVIG
Chronic ITP
Rituximab
Splenectomy - refractory cases only
Dx. Criteria febrile seizure
6 mo - 6 yrs Tmax > 38 No history of seizures No CNS infection No acute systemic metabolic cause
Long term prognosis in febrile seizures
30-50% recurrence rate
<5% change of developing epilepsy
Normal development and intelligence
Alternative to ethosuximide in tx of absence seizures
Valproic acid
Juvenile myoclonic epilepsy
Jerky movements occuring in the morning in an adolescent
Irregular spike and wave pattern
Tx. Valproic acid
West syndrome
Infantile spasms during first year
Hypsarrhythmia - high voltage slow waves, irregularly interspersed with spikes and sharp waves
Tx. west syndrome
ACTH
Prednisone
Vigabatrin
Vit B6. (Pyridoxine)