Step 2 Peds Flashcards
(138 cards)
This type of newborn hemorrhage is limited by the cranial bones. Where is the hemorrhage located? What is the treatment?
What is the “sister” component to this and how does it present differently?
Cephalohematoma. It is a subperiosteal hemorrhage - monitoring is sufficient b/c it resolves on it’s own mostly.
Caput Succedaneum is a diffuse swelling over suture lines, can be ecchymotic, and usually appears over the presenting vertex part of the baby’s scalp.
What would you be worried about with a child presenting with episodic apnea, pallor or cyanosis, poor suckling, abnormal eye movements, high-pitched cry, muscle twitching, convulsions, decreased hematocrit, metabolic acidosis, and shock? What might you find on PE?
Intracranial hemorrhage. Bulging or pulsatile fontanels.
What would you suspect the etiology to be of a depressed calvarium, resembling a “dented ping pong ball”?
Forceps delivery or fetal head compression. This is a depressed skull fracture.
Why do up to 2/3 boys experience transit gynecomastia during puberty? What’s the normal size of testicular volume in a prepubescent boy? *BONUS - what’s the name of the measuring device?
The testicles make a transient elevated level of estrogen and there’s an increase in peripheral prohormones into estrogen. < 3 mL for prepubescent testicular size measured via a Prader orchidometer.
How would IgA deficiency present? What are common infectious agents seen?
Recurrent sinopulmonary (Hemophilus & Streptococcus) and GI (Giardia) infections. They also can form antibodies against IgA so transfusions can cause an anaphylactic reaction.
What problem do you think of with deficient T cell synthesis, thymic aplasia, fungal infections, hypoparathyroidism with hypocalcemia, cleft palate, and congenital heart disease?
DiGeorge Syndrome - remember CATCH-22: 1) Cardiac anomaly (Tet Fallot = MC or Truncus Arteriosus) 2) Abnormal Facies 3) Thymic Aplasia 4) Cleft Palate 5) Hypoparathyroidism / Hypocalcemia Problem with Chromosome 22
What is deficient in X-linked Agammaglobulinemia? What is the common respiratory pathogen? How is this different from IgA Def?
B Cell Deficiency and all immunoglobulins. Pseudomonas. You won’t have an anaphylactoid reaction because you can’t mount any antibodies.
What do you think of in a child with thrombocytopenia, recurrent otitis media, and eczema? What is deficient in these kids?
Wiskott-Aldrich Syndrome. Combined deficiency in B and T cells.
What is the difference in kids with Hyper-IgM Syndrome and IgA Def?
The IgM levels are elevated in relation to IgA and IgG. But lymphoid hyperplasia is key to distinguishing this syndrome b/c both sinopulmonary and GI infections can present.
What are Cystic Fibrosis patients prone to getting?
Sinopulmonary infections (Pseudo), pancreatic insufficiency, infertility, and meconium ileus.
What do you think of in a child with thrombocytopenia, recurrent otitis media, and eczema? What is deficient in these kids?
Wiskott-Aldrich Syndrome. Combined deficiency in B and T cells.
What causes the arthropathy seen in hemophilic patients? What complications can occur do to this? What imaging is used to best see this? What prophylactic treatment helps prevent these?
Hemosiderin and Fe deposition in the joint causing synovitis and fibrosis. Complications include chronic worsening joint pain, swelling of the joint, contractures of the joint, and limited ROM. MRI is best. Early factor concentrates are used for prophylaxis.
How does each anti-epileptic work and what is it used for? Ethosuximide, Phenytoin, Carbamazepine, Phenobarbital.
BONUS - What two serious side effects do you look out for in the first several weeks of treatment with Phenytoin and Carbamazepine?
Ethosuximide - (childhood absence seizures) works on the thalamic neurons providing Ca-channel blockade
Phenytoin / Carbamazepine - (primary generalized tonic-clonic seizures or partial seizures) blocks neuron’s sodium channels. SEfx’s of Phenytoin = hirsutism, lymphadenopathy, gingival hypertrophy, and rash.
Phenobarbital - (second line) extends Chloride channel opening of GABA receptors
BONUS = Steven’s Johnson Syndrome or Toxic Epidermal Necrosis
How much do you expect a child’s weight and height to change in one year?
Increase height by 50% and weight should triple.
1) What congenital syndrome is associated with William’s Syndrome? (Happy elves)
2) What congenital syndrome is associated with PDA?
3) What congenital syndrome is associated with coronary artery aneurysms?
4) What congenital syndrome is associated with VSD?
5) What congenital syndrome is associated with MVP?
1) Supravalvular stenosis
2) Rubella and Char Syndrome
3) Kawasaki’s Disease
4) Aneuploidy (Trisomy 13, 18, 21)
5) Connective tissue d/o’s like Ehlers-Danlos, Osteogenesis Imperfecta, and Marfan’s
What abnormalities are common with 45 X karyotype? What should you order with this patient to exam for the above findings?
Bicuspid aortic valve, coarctation of the aorta, dilation of the aortic root (increased risk of aortic dissection), streak ovaries, broad chest with wide spaced nipples, amenorrhea, infertility, low-set ears, webbed neck, low hairline, narrowed high arch palate, horseshoe kidney. Order Echo and/or 4-extremity BP readings.
What congenital problem does a child with micrognathia, microcephaly, overlapping fingers, absent palmar crease, VSD, and rocker bottom feet?
Edward’s Syndrome = Trisomy 18
1) What congenital syndrome is associated with William’s Syndrome? (Happy elves)
2) What congenital syndrome is associated with PDA?
3) What congenital syndrome is associated with coronary artery aneurysms?
1) Supravalvular stenosis
2) Rubella / Char Syndrome
3) Kawasaki’s Disease
What abnormalities are common with 45 X karyotype? What should you order in all of these patients?
Bicuspid aortic valve, coarctation of the aorta, dilation of the aortic root (increased risk of aortic dissection), streak ovaries, broad chest with wide spaced nipples, webbed neck, low hairline, narrow high arched palate, low set ears, cubits valgus (angle of the arm is angled away from the body more than normal), horseshoe kidney.
Order an echo and BP measurement in all 4 extremities.
What do you suspect in a child who recently had a cold and now presents with symmetric palpable purpura on his lower extremities, colicky abdominal pain, hematuria on labs, and arthralgias with normal platelets? How do you treat this? What would renal bx show (not needed for dx)?
Henoch-Schonlen Purpura = IgA mediated vasculitis = leukocytoclastic (damage from the nuclear material in neutrophils).
Supportive care and NSAIDs for trmt.
Renal bx would show IgA deposition in the mesangium.
What causative organisms would come to mind in a kid with blue/black hemorrhagic, purpuric lesions?
Neisseria Meningitidis or Strep PNA. This is Purpura Fulminans = life threatening
What is the most common cause of poikilocytosis, anisocytosis, and elevated TIBC in a child?
Fe-def anemia 2/2 poor intake of Fe-fortified foods in the early years of life. Other causes = bleeding or parasitic infxns (elevated bili and eosinophelia would help distinguish the latter respectively)
- Anisocytosis = varying size of RBC’s
- Poikilocytosis = varying shape of RBC’s
What disease do you think of in a kid taking vitamins A, D, E, and K with pancrelipase? What’s the pathology behind this d/o? What are they at risk for?
This is Cystic Fibrosis - a mutation of the transmembrane regulator involving Chloride channels. They are at risk for recurrent PNA, chronic rhino sinusitis, obstructive lung disease leading to bronchiectasis, GI malignancy, obstructive azospermia leading to infertility in males, meconium ileum, clubbing, osteopenia leading to fractures, and kyphoscoliosis.
What are the most common pathogens causing PNA in a patient with CF as it relates to age?
S. Aureus (Gram + cocci in clusters) in infants and young children, Pseudomonas A. (Gram - Rods in adolescents and young adults)