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Pediatrics
Master the Boards USMLE Factoids
164
Medical
Professional
06/13/2016

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Term
newborn normal vitals
Definition
RR 40-60 rpm, HR 120-160 bpm
Term
APGAR
Definition
appearance (color)
pulse (rate)
grimace (reflex/irritability)
activity (motor tone/movement)
respiration (breathing effort)
Term
newborn conjunctivitis ddx by time
Definition
day 1: chemical irritation (silver nitrate)
day 2-7: n. gonorrhoeae
day 7-21: c. trachomatis
> day 21: herpes
Term
newborn conjunctivitis tx by etiology
Definition
chemical: none
n. gonorrhhoeae: ceftriaxone
c. trachomatis: erythromycin PO
herpes: systemic acyclovir and topical vidarabine
Term
required newborn screening tests
Definition
PKU, CAH, biotinidase, beta thalassemia, galactosemia, hypothyroidism, homocysteinuria, cystic fibrosis
Term
G6PD deficiency
Definition
X-linked
Px: hemolytic crises
Tx: reduce oxidative stress, special diet
Term
PKU (phenylketonuria)
Definition
autosomal recessive
deficient enzyme (PAH)
Px: mental retardation
Tx: special diet low in phenylalanine (for at least first 16yrs)
Term
CAH (congenital adrenal hyperplasia)
Definition
autosomal recessive
Defect: error in steroidogenesis, MC 21-hydroxylase deficiency; others 17-hydroxylase and 11-beta-hydroxylase
Tx: mineralocorticoids and glucocorticoids, +/- genital reconstruction
Term
congenital hypothyroidism
Definition
1:4000
cretinism
associated umbilical hernia
Term
hearing test (newborn)
Definition
excludes congenital sensory-neural hearing loss
Term
cystic fibrosis
Definition
autosomal recessive
Px: abnormal thick mucus, organ dysfunction (1+)
Best initial test: sweat chloride
Most accurate test: genetic analysis of CFTR gene
Term
HBIG candidates
Definition
only to babies with mom's who are HBsAg+
Term
types of newborn skull fractures
Definition
linear - MC
depressed - can cause further cortical damage without surgical intervention
basilar - most fatal
Term
caput seccedaneum
Definition
swelling of soft tissues of scalp after birth
CROSSES suture lines
no treatment
Term
cephalohematoma
Definition
subperiosteal hemorrhage after birth
DOES NOT CROSS suture lines
no treatment (watch for increased bilirubin with blood breakdown)
Term
Duchenne-Erb Paralysis
Definition
C5-C6 injury 2* to shoulder dystocia
waiter's tip position (unable to abduct, external rotate, supinate)
Dx: clinical
Tx: immobilization
Term
Klumpke Paralysis
Definition
C7-C8 +/-T1
claw hand due to lack of grasp reflex
paralyzed hand with Horner syndrome (ptosis, miosis, anhydrosis)
Dx: clinical
Tx: immobilization
Term
most common newborn injury from shoulder dystocia
Definition
clavicle fracture
Term
newborn facial nerve palsy
Definition
usually due to trauma from delivery with forceps
improvment over few weeks to months, if none seen will require surgical nerve repair
Term
amniotic fluid origin
Definition
80% mother plasma filtrate
20% fetal swallow/absorb/filter/urinate
Term
polyhydramnios
Definition
too much fluid, fetus not swallowing
Neurologic Werdnig-Hoffman (unable to swallow) or GI (intestinal atresias)
Term
oligohydramnios
Definition
too little fluid, fetus not urinating
Prune belly (no abdominal muscles, tx with catherization) or Renal agenesis (incompatible with life, Potter syndrome assoc)
Results in flat facies
Term
diaphragmatic hernia
Definition
Px: bowel sounds in chest, fluid-air levels in CXR
Morgagni (retrosternal or parasternal)
Bochdalek (posterolateral) = MC, likely left
Term
omphalocele
Definition
Etio: intestines and organs form outside abdominal wall within a SAC due to failur of retraction at 10-12wks gestation
Assoc: Edwards Syndrome (trisomy 18)
Screen: elevated AFP
Term
congenital umbilical hernia
Definition
assoc. with congenital hypothyroidism
90% close by 3, srugical repair after 4 recommended
Term
gastroschisis
Definition
ETio: wall defect lateral to midline with intestines and organs form outside abdomen WITHOUT SAC
Assoc: intestinal atresias
Term
Wilms tumor
Definition
MC abdominal mass in children
Path: hemihypertrophy of kidney
Sx: aniridia (highly assoc.), constipation, abdominal pain, N/V
Dx: ultrasound (best initial), CT (most accurate)
Tx: total nephrectomy + chemo + radiation; partial nephrectomy if b/l
Term
neuroblastoma
Definition
MC cancer in infancy and MC extracranial solid malignancy in childhood
Etio: adrenal medulla tumor (similar to pheo but less cardiac sx)
Mets: 50-60% at presentation
Px: hypsarrhythmia on EEG and psomyoclonus (dancing eyes, myoclonic jerks, and dancing feet)
Dx: increased VMA and metanephrines in urine
Term
WAGR syndrome
Definition
Wilms tumor, Aniridia, Genitourinary malformations, Retardation (mental)
deletion on chromosome 11
Term
hydrocele
Definition
Px: painless, fluid-filled sac along spermatic cord, transilluminates
Etio: remnant of tunica vaginalis
Prognosis: resolve within 6mo,
DDx: inguinal hernia
Term
varicocele
Definition
Px: dull ache and heaviness in scrotum
Etio: varicose vein in scrotal veins -> swelling in pampiniform plexus + increased pressure
Best initial test: PE (bag of worms)
Most accurate test: ultrasound (>2mm diameter)
Tx: when delayed growth or atrophy of testes observed
Prognosis: likely occultly bilateral
Term
cryptorchidism
Definition
Px: absence of testicle (usually in canal, 90%)
Tx: orchipexy (bring down) after 1y/o
Prognosis: increased risk of malignancy regardless of orchipexy
Term
hypospadias
Definition
Px: opening of urethra on ventral surface of penis, assoc. with cryptorchidism and inguinal hernias
Tx: surgical
Note: CIRCUMCISION contraindicated
Term
epispadias
Definition
Px: opening of urethra on dorsal surface, high assoc. with urinary incontinence, eval for bladdery exstrophy
Tx: surgery
Term
newborn reflexes (list)
Definition
sucking, grasping, babinski, rooting, moro, stepping, superman
Term
most common cyanotic heart defect (post-neonatal period)
Definition
tetralogy of fallot
Term
tetralogy of fallot
Definition
Defects: overriding aorta, pulmonary stenosis, RVH, VSD
Etio: genetic (chr 22 deletion), environmental
Px: cyanosis, holosystolic murmur, squatting
Dx: boot shaped heart (CXR), decreased pulmonary vasc (CXR)
Tx: surgery
Term
exercise intolerance and squatting (name of sx)
Definition
tet spell
Term
VSD common in what syndrome
Definition
down (trisomy 21), edwards (trisomy 18), patau (trisomy 13)
Term
MC heart defect in down syndrome
Definition
endocardial cushion defect of AV canal
Term
holosystolic murmurs
Definition
mitral regurg, tricuspid regurg, VSD
Term
most common cyanotic heart defect (neonatal period)
Definition
transposition of great vessels
Term
transposition of great vessels
Definition
Defects: aorta orginates from RV and pulmonary artery from LV, no oxygenation without PDA
Tx: prostaglandins E1 to maintain PDA and then two surgeries (each with 50% mortality)
CI: NSAIDS (esp. indomethacin)
Term
pulsus alternans
Definition
Px: alternating strong and weak beats
Dx: LV systolic dysfx
Term
pulsus bigeminus
Definition
Px: groups of two heartbeats close together followed by a longer pause
Dx: HOCM (hypertrophic obstructive cardiomyopathy)
Term
pulsus bisferiens
Definition
Px: double peak per cardiac cycle can be appreciated.
Dx: aortic regurgitation
Term
pulsus tardus et parvus
Definition
Px: pulse is weak/small and late
Dx: aortic stenosis
Term
pulsus paradoxus
Definition
Px: abnormally large decrease in systolic blood pressure and pulse wave amplitude during inspiration
Dx: cardiac tamponade or tension pneumothorax
Term
hypoplastic left heart syndrome
Definition
Defects: LV hypoplasia, mitral valve atresia, aortic valve lesions
Px: absent pulses with single S2, increased RV impulse, gray cyanosis
Dx: CXR globular heart and pulmonary edema, ECHO = most accurate
Tx: 3 surgeries each with high mortality risk
Term
truncus arteriosus
Definition
Defect: single trunk from both right and left ventricles
Px: first few days of life, severe dyspnea, early and frequent resp infections, single S2, systolic ejection murmur, bounding pulses
Dx: CXR cardiomegaly and increased pulm vasc markings
Tx: srugery
Complication: pulmonary hypertension within 4mo if surgery is not done
Term
total anomalous pulmonary venous return (TAPVR)
Definition
Defect: no venous return between pulmonary veins and left atrium (instead to SVC), with or without obstruction
Term
TAPVR with obstruction
Definition
Px: early in life, respiratory distress, severe cyansosis
Dx: CXR pulmonary edema, ECHO definitive dx
Tx: surgery
Term
TAPVR without obstruction
Definition
Px: age 1-2yrs, right heart failure, tachypnea
Dx: CXR snowman/figure 8, ECHO is most accurate and required
Tx: surgery
Term
Eisenmenger syndrome
Definition
left-to-right shunt caused by VSD reverses to right-to-left shunt due to hypertrophy of the right ventricle
Term
right-to-left shunt congenital heart defects
Definition
tetralogy of fallot, TGV, hypoplastic left heart, TA, TAPVR
Term
PDA dependent congenital heart defects
Definition
hypoplastic left heart, TA
Term
VSD containing congenital heart defects
Definition
TOF, TA
Term
VSD (ventricle septal defect)
Definition
MC congenital heart lesion
Px: dyspnea, high-pitched holosystolic murmur (LLSB), loud P2
Dx: CXR increased vasc markings, ECHO, cardiac cath (definitive)
Prognosis: smaller ones close first 1-2yrs, larger require surgery
Tx: diuretics and digoxin (conservative)
Complications: CHF, endocarditis, pulmonary HTN
Term
ASD (atrial septal defect)
Definition
twice as common women
three types: primum, secundum, sinus venosus)
Px: asymptomatic, FIXED WIDE SPLITTING OF S2
Dx: definitive = cardiac cath, ECHO is just as effective, CXR increased vasc markings and cardiomegaly
Prognosis: most close spontaneously
Tx: surgery or transcatheter closure
Complications: dysrhythmias, paradoxical emboli with DVTs
Term
primum defect
Definition
ASD highly assoc. with concomitant mitral valve abnormalities
Term
secundum defect
Definition
most common ASD type, locataed in center of atrial septum
Term
sinus venosus defect
Definition
least common ASD type
Term
PDA (patent ductus arteriosus)
Definition
Defect: failure of spontaneous closure of ductus, pathologic after 24hrs of life
Etio: low PO2 can cause (prematurity, high altitude)
Px: machinery like murmur, wide pulse pressure, bounding pulses
Complication: lots of resp. infections, infective endocarditis
Dx: best initial = ECHO, most accurate = cardiac cath, EKG with LVH
Tx: indomethacin
Term
pear-shaped heart
Definition
dx: pericardial effusion
Term
boot-shaped heart
Definition
dx: TOF
Term
jug handle heart
Definition
dx: primary pulmonary artery HTN
Term
3 shaped aorta/heart
Definition
dx: coarctation of aorta
Term
rib notching
Definition
dx: coarctation of aorta
Term
mitral valve radiation
Definition
axilla
Term
tricuspid valve radiation
Definition
back
Term
pulmonic valve radiation
Definition
back
Term
aortic valve radiation
Definition
neck
Term
prostaglandins ____ PDA
indomethacin ___ PDA
Definition
pops open
closes
Term
child + hearing loss + syncope + normal vitals and PE + FMH/o SCD
Definition
1 type of prolonged QT syndrome
Term
coarctation of aorta
Definition
Defect: narrowing of aorta in area of ductus arteriosus
Assoc: Turner syndrome
Px: severe CHF, respiratory distress, first few months of life, differential pressures and pulses between upper and lower extremities
Dx: rib notching and/or 3 sign on CXR, cardiac cath = most accurate
Tx: surgical resection and then ballooning if recurrent
Term
pathologic jaundice of newborn (criteria)
Definition
- on first day of life
- bilirubin increase > 5mg/dL/day
- bilirubin above 19.5mg/dL in term baby
- direct bili >2mg/dL at any time
- persists past 2wks of life
Term
complication of jaundice of newborn
Definition
bilirubin deposition in basal ganglia (kernicterus = hypotonia, seizures, writhing, chorea, hearing loss)
Term
hypotonia + seizures + choreoatheosis + hearing loss + jaundice + newborn
Definition
kernicterus
Term
work-up of newborn jaundice
Definition
direct and indirect bilirubin levels
blood type check of mom and baby (ABO and Rh incompatibility)
peripheral blood smear and reticulocyte count (hemolysis)
Term
treatment of newborn jaundice
Definition
phototherapy (helps breakdown to excretable components)
exchange transfusion at 20-25mg/dL bilirubin
Term
esophageal atresia
Definition
Defect: end blindly, 90% communicate with trachea through fistula
Px: vomit with first feed, choking, coughing, cyanosis, h/o polyhydramnios, recurrent aspiration pneumonia
Dx: CXR (gastric and esophageal air bubble), coiling NG on CXR and inability to pass, CT or esophagram
Tx: surgical repair in 2 steps, abx for anaerobes, fluid resuscitation
Term
pyloric stenosis
Definition
Defect: hypertrophic pyloric sphincter, idiopathic usually
Px: by the first month of life to 6mo, succussion splash, NBNB projectile vomiting, hypochloremia, hypokalemia, metabolic alkalosis, olive sign
Dx: best initial = abd US; most accurate = upper GI series (string sign, shoulder sign, mushroom sign, railroad track sign)
Tx: IVF, NGT, myotomy
Term
palpable mass in epigastric region in baby with projectile vomiting
Definition
olive sign
pyloric stenosis
Term
string sign
Definition
thin column of barium leaking through the tightened pyloric sphincter muscle
Term
shoulder sign
Definition
filling defect in the antrum due to prolapse of muscle inward at pylorus
Term
mushroom sign
Definition
hypertrophic pylorus against the duodenum
Term
railroad track sign
Definition
excess mucosa in pyloric lumen resulting in 2 columns of barium
Term
esophageal atresia fast facts
Definition
blind esophagus
frothing + couhing + cyanosis + resp. distress during feeds
no resp. distress at rest
initial test: CXR
concerns: aspiration pneumonia
Term
choanal atresia fast facts
Definition
buccopharyngeal membrane
respiratory distress
best initial step: pass NGT
most diagnostic test: CT scan
first step: secure airway
Term
duodenal atresia fast facts
Definition
failed duodenal canalization
NO resp. distress
BILIOUS vomiting
initial test: AXR (double-bubble)
Assoc: trisomy 21
first step: IVF resuscitation
Term
choanal atresia
Definition
Defect: membrane between nostrils and pharyngeal space, prevents breathing during feeding
Assoc: CHARGE syndrome
Px: blue when feeding and pink when crying
Dx: CT scan
Tx: surgery
Term
CHARGE syndrome (commonly STEP2 tested)
Definition
C: colomoma of eye, CNS anomalies
H: heart defects
A: atresia of choanae
R: retardation of growth/development
G: genital and/or urinary defects (hypogonadism)
E: ear anomalies and/or deafness
Term
Hirschsprung disease
Definition
Defect: lack of innervation of distal bowel by Auerbach plexus, constant contracture of muscle
Assoc: down syndrome, boys:girls::4:1
Px: delayed meconium >48hrs, extreme constipation, LBO, extremely tight sphincter, inability to pass flatus
Dx: AXR (distended bowel loops, no air in rectum), contrast enema (retained >24hrs), manometry with very high pressures in anal spinchter, best=full thickness bx (no ganglionic cells in submucosa)
Tx: 3-stage surgery
Term
imperforate anus
Definition
Defect: opening missing, rectum into blind sac with conservation of sphincter
Assoc: Down syndrome, VACTERL syndrome
Px/Dx: failure to pass meconium + no anus on PE
Tx: surgery
Term
VACTERL syndrome
Definition
V: vertebral anomalies
A: anal atresia
C: cardiovascular anomalies
T: tracheoesophageal fistula
E: esophageal atresia
R: renal anomalies
L: limb anomalies
Term
duodenal atresia
Definition
Defect: lack of apoptosis that leads to improper canalization of lumen of duodenum
Assoc: annular pancreas, down syndrome
Px: bilious vomiting within 12hrs of birth
Dx: CXR with double-bubble
Tx: IVF resuscitation, NGT, surgery (duodenostomy)
Term
volvulus
Definition
Defect: bowel obstruction due to twisting of bowel, usually midgut in kids (most in ileum)
Px: vomit, colicky abd pain
Dx: air fluid levels on AXR, bird-beak at site on upper GI series
Tx: surgical or endoscopic untwisting EMERGENTLY; usually endoscopic tried first
Complication: bowel necrosis, perforation, sepsis, death
Term
intussusception
Definition
Defect: part of bowel telescopes into another distal segment of bowel
Etios: polyp, hard stool, lymphoma, viral, idiopathic (MC)
Px: colicky abd pain, bilious vomit, currant jelly stool, right quadrant sausage-shaped mass
Dx: US is best initial (doughnut or target sign), barium enema (both dx and tx) = most accurate
CI: barium enema if periotonitis, shock or perforation
Tx: fluid resuscitation, NGT, barium enema, emergency surgery if recurs
Prognosis: 10% recur within 24hrs
Term
Meckel's diverticulum
Definition
Defect: true diverticulum due to persistance of vitelline duct +/- ectopic gastric tissue
Px: painless rectal bleeding (massive, frank, BRB per rectum)
Dx: most accurate = Techneitum 99m scan
Tx: surgical removal
Term
bilious vomiting + first day of life
Definition
MC dx: duodenal atresia
Term
bilious vomiting + within first year of life + abnormal AXR
Definition
MC dx: volvulus
Term
bilious vomiting + within first year of life + doughnut sign on US
Definition
intussusception
Term
second MC cause of infant death worldwide
Definition
acute diarrhea
Term
inflammatory diarrhea
Definition
fever + abd pain +/- bloody diarrhea
Term
noninflammatory diarrhea
Definition
vomiting + crampy abd pain + watery diarrhea
Term
dx work-up for kid with diarrhea
Definition
Stool: blood and leukocyte count (presence of invasive toxins), cultures and O&P (causative agent)
Sigmoidoscopy (psuedomembranes in C. diff)
Term
first step in treatment of kids with diarrhea
Definition
mild: oral fluids
severe: IV fluids
Term
rotavirus diarrhea
Definition
MC in winter
Px: fever, vomiting, nonbloody, <7d, viral prodrome
Note: vaccine available
Term
adenovirus diarrhea
Definition
common all year found (endemic)
Px: fever, vomit, nonbloody, <7d, viral prodrome
Term
norwalk diarrhea
Definition
Epidemic
Px: explosive diarrhea, cramping pain, 1-2d
Term
necrotizing enterocolitis
Definition
Defect: bowel necrosis and bacteria invasion of intestinal wall
Px: premature infant, low birth wieght, vomiting, abd distention, fever
Prognosis: 30% mortality
Dx: AXR (pathognomotic pneumatosis intestinalis), CT (air in portal vein, dilated bowel loops, pneumoperitoneium if perforated); frank/occult blood in stool
Tx: d/c feeding, IVF, NGT, abx (vanc/gent/MTZ), surgery if not improved
Term
findings of infants of diabetic mothers (list)
Definition
macrosomia, small left colon syndrome, cardiac abnormalities, renal vein thrombosis, metabolic effects
Term
IDM - macrosomia
Definition
all organs enalrged
increased output of bone marrow (polycythemia and hyperviscosity)
shoulder dystocia (brachial plexus palsy)
Term
IDM - small left colon syndrome
Definition
distention and constipation
dx by barium study
tx with smaller frequent feeds
Term
IDM - cardiac abnormalities
Definition
asymmetric septal hypertrophy (d/t obliteration of LV lumen --> dec. CO)
dx by EKG and ECHO
tx: beta blockers and IVF
Term
IDM - renal vein thrombosis
Definition
flanks mass and possible bruit
hematuria and thrombocytopenia
Term
IDM - metabolic effects
Definition
hypoglycemia --> seizures
hypocalcemia --> tetany, lethargy
hypomagnesemia --> hypocalcemia and PTH decrease
hyperbilirubinemia --> icterus and kernicterus
Term
CAH 21-hydroxylase deficiency
Definition
Px: hypotensive, hypoNa, hypoCl, hyperK, hypoglycemia, girls (ambig genitals, facial hair, virilization, menstrual changes), boys (loss of sex features),
Dx: serum electrolytes, increased 17-OH progesterone
Tx: decreased ALD, decreased cortisol, acidosis, steroid replacement, psych management of gender issues
Term
CAH 17-alpha-hydroxylase deficiency
Definition
Px: hypertensive, normal at birth girls, pseudohermaphroditism boys
Dx: increased ALD, decreased cortisol, decreased sex hormone, hypoK
Tx: steroid replacement as needed
Term
CAH 11-beta-hydroxylase deficiency
Definition
Px: hypertensive, virilized girl, normal at birth boy
Dx: decreased ALD, decreased cortisol, increased sex hormones, increased DOC, VERY few electrolyte abnormalities
Tx: steroid replacements
Term
rickets
Definition
Defect: lack of vitamin D/Ca++/Phos, softening and weakening bones
Px: fractures, children 6-24mo, ulnar/radial bowing, femoral/tibial bowing, waddling gait
Dx: rachitic rosary (CXR, beading of ribs), bowlegs
Tx: phosphate, calcium, and vitamin D (ergocalciferol, 1,25(OH)2, calcitrol), annual blood Vit D monitoring
Term
etiologies of rickets
Definition
Vit D Def: lack of enough vitamin D in diet
Vit D dependent: inability to convert 25-OH to 1,25(OH)2, infant requies supplementation
X-linked hypophosphatemic: innate kidney defect results in inability to retain phosphate (inadequate mineralization of bones and weakened)
Term
rickets + norm/dec Ca + decreased Phos + decreased 1,25(OH)2 + decreased 25(OH)
Definition
vitamin D deficiency in diet
Term
rickets + decreased Ca + normal phos + decreased 1,25(OH)2 + normal 25(OH)
Definition
vitamin D dependent rickets (inability to convert vitamin d to active form)
Term
rickets + normal Ca + decreased phos + normal 1,25(OH)2 + normal 25(OH)
Definition
x-linked hypophosphatemia
Term
neonatal sepsis (MC underlying infections)
Definition
pneumonia, meningitis
Term
neonatal sepsis (MC bacteria)
Definition
Group B strep, E. coli, S. aureus, Listeria monocytogenes
Term
neonatal sepsis work up tests
Definition
BCX, UCX, CXR
Term
neonatal sepsis empiric tx
Definition
ampicillin, gentamicin, IVF, +/- cefotaxime
Term
early neonatal sepsis MC bacteria
Definition
group B strep, E. coli, Listeria
Term
late neonatal sepsis MC bacteria
Definition
staphylococcal, E. coli, Group B strep
Term
TORCH infections list
Definition
toxoplasmosis, other infections (syphilis, HIV), rubella, cytomegavirus, herpes simplex virus
Term
congenital toxoplasmosis
Definition
Px: chorioretinitis, hydrocephalus, multiple ring-enhancing lesions on CT
Best initial test: elevated IgM toxoplasma
Most accurate test: PCR for toxo
Tx: pyrimethamine and sulfadiazine
Term
congenital syphilis
Definition
Px: rash on palms and soles, frontal bossing, Hutchinson, eighth nerve palsy, saddle nose
Best initial test: VDRL or RPR
Most accurate test: FTA ABS or dark field
Tx: penicillin
Term
congenital rubella
Definition
Px: PDA, cataracts, deafness, hepatosplenomegaly, thrombocytopenia, bluberry muffin rash, hyperbilirubinemia
Best initial test: maternal IgM status, clinical
Tx: supportive
Term
congenital CMV
Definition
Px: periventricular calcifications with microencephaly, chorioretinitis, hearing loss, petechiae
Best initial test: urine and saliva viral titers
Most accurate test: urine and saliva PCR
Tx: ganciclovir if signs of organ damage
Term
congenital herpes
Definition
Px: shock and DIC (week 1), vesicular skin lesions (week 2), encephalitis (week 3)
Best initial test: Tzanck
Most accurate test: PCR
Tx: acyclovir and supportive
Term
varicella (chicken pox)
Definition
Etio: herpes 3, VZV
Px: multiple highly pruritic vesicular rash (begins on face), fever, malaise
Best initial test: Tzanck (multinucleated giant cells)
Most accurate test: viral culture
Tx: supportive
Term
rubeola (measles)
Definition
Etio: paramyxovirus
Px: cough, coryza, conjunctivitis, Koplik spots
Dx: clinical
Most accurate test: IgM Abs
Tx: supportive
Term
fifth disease (erythema infectiosum)
Definition
Etio: Parvo B19
Px: fever, URI --> rash (slapped cheek)
Dx: clinical
Tx: supportive
Term
roseola
Definition
Etio: herpes 6 and 7
Px: fever, URI, diffuse rash
Dx: clinical
Tx: supportive
Term
mumps
Definition
Etio: paramyxovirus
Px: fever --> parotid gland swelling, possible orchitis
Dx: clinical
Tx: supportive
Term
scarlet fever
Definition
Etio: erythrogenic toxin from Streptococcus pyogenes
Px: diffuse erythematous eruption concurrent with pharyngitis, lasts 3-6days, pentad (fever, pharyngitis, sand paper rash, strawberry tongue, cervical lymphadenopathy)
Dx: clinical, correlate with elevated ASO titer/ESR/CRP
Tx: penicillin, azithromycin, cephalosporins
Term
croup
Definition
Etio: parainfluenza types 1-2 (MC), RSV
Px: barking cough, coryza, inspiratory stridor, hypoxia, steeple sign
Dx: clinical
Tx: mild (steroids), mod-severe (racemic epinephrine)
Term
epiglottitis
Definition
Etio: haemophilus influenza type B
Px: poor vaccination hx, hot potato voice, fever, drooling, tripoding, refusal to lie flat, hot/cherry epiglottitis
Dx: clinical, xray with thumbprint sign
Tx: INTUBATE, ceftriaxone, rifampin to clost contacts
Term
whooping cough
Definition
Etio: Bordetella pertussis
Px: catarrhal (severe congestion and rhinorrhea x14d), paroxysmal (severe coughing, gasping for air, posttussive emesis, inspiratory whoop x14-30d), convalescent stage (decreasing cough x14d)
Dx: clinical (whooping, vomiting, burst vessels in eyes), butterfly pattern on CXR, PCR of nasal secretions, Bordetella pertussis toxin ELIXA
Tx: erythromycin or azithromycin (ONLY in ctarrhal), isolation, macrolides for all close contacts, DTaP
Term
bronchitis
Definition
Etio: bacteria and viruses
Px: productive cough 7-10d with fever
Dx: clinical
Tx: supportive
Term
pharyngitis
Definition
Etio: group A beta-hemolytic strep
Px: cervical adenopathy, petechiae, fever over 104*F, URI sx, acute rheumatic fever, glomerulonephritis
Dx: rapid DNAse Ag detection
Tx: oral penicillin for 10d (alt. macrolides)
Term
diphtheria
Definition
Etio: corynebacterium diphtheriae
Px: gray highly vascular pseudomembranous plaques on pharyngeal wall
Dx: culture of superficial membrane
Tx: antitoxin (ABX don't work)
Term
congenital hip dysplasia
Definition
Px: infants, found on newborn exam
Dx: Ortolani and Barlow maneuver
Tx: Pavlik harness
Term
Legg-Calve-Perthes disease
Definition
Px: ages 2-8, painful limp
Dx: xray (jt effusion, widening)
Tx: rest, NSAIDs, then surgery of both hips
Term
slipped capital femoral epiphysis
Definition
Px: adolescent, obese, painful limp, external rotated leg
Dx: xray (widening jt space)
Tx: internal fixation of pinning
Term
vitamin A deficiency
Definition
Px: poor night vision, hypoparathyroidism (decreased Ca, decreased Phos, muslce spasms)
Term
vitamin A toxicity
Definition
Px: pseudotumor cerebri, hyperparathyroidism (weak bones)
Term
vitamin B1 deficiency (thiamine)
Definition
Px: beriberi (wt loss, emotional changes, sensory changes, irregular heartbeat, increased lactate, edema); Wernicke's encephalopathy (ophthalmoplegia, ataxia, confusion)
Term
vitamin B2 deficiency (riboflavin)
Definition
Px: angular chelosis, stomatitis, glossitis
Term
vitamin B3 deficiency (niacin)
Definition
Px: pellagra (diarrhea, dermatitis, dementia, death)
Term
vitamin B5 deficiency (panthothenic acid)
Definition
Px: burning feet syndrome
Term
vitamin B6 deficiency (pyridoxine)
Definition
Px: peripheral neuropathy, can be caused by INH (supplement)
Term
vitamin B9 deficiency (folate)
Definition
Px: megaloblastic anemia, hypersegmented neutrophils
Term
vitamin B12 deficiency (cyanocobalamin)
Definition
Px: megaloblastic anemia, hypersegmented neutrophils, peripheral neuropathy (dorsal column tracts)
Term
vitamin C deficiency
Definition
Px: scurvy (echymoses, bleeding gums, petechiae)
Term
vitamin D toxicity
Definition
Px: hypercalcemia, polyuria, polydipsia
Term
vitamin K deficiency
Definition
PX: increase PT (INR), mild to severe bleeding
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