Peds Review Flashcards
At what level of bili is jaundice typically noticed in an infant?
4-5 mg/dL
How does jaundice appear as bili levels rise?
Starts at the head, and as bili increases, progresses down toward the feet
When is the optimal time to draw labs for the newborn screen?
more than 24 hours after birth
Does breastfeeding have to be interrupted when an infant is jaundiced?
Most say no
When does breast feeding jaundice present, and how long does it last?
Several days after birth, and can persist for up to 12 weeks
True or false: PKU is associated with jaundice
False
By what age is an infant expected to regain their birth weight?
2 weeks
What are the signs of hunger in an infant?
- Increased alertness
- Increased physical activity
- Mouthing
- Rooting
How often should an infant be fed?
q2-3 hours for 15-30 minutes at a time
How often should an infant void and stool?
Void 3-6 /day
Stools 3-6 /day
When and how much Vit D should infants be supplemented?
400 IU /day starting in the first few days of life
What are the s/sx of congenital hypothyroidism?
- Feeding problems
- Decreased activity
- Constipation
- Prolonged jaundice
- Skin mottling
- Umbilical hernia
What are the s/sx of hypoxic-ischemic encephalopathy in a neonate?
- Low APGAR scores
- Poor feeding
- Multi-organ dysfunction
What are the most common causes of congenital hypothyroidism in the US?
- Aplasia/Hypoplasia
- Ectopic gland
- Autoimmune thyroiditis can lead to abs blocking TSH in infant
What is the most common cause of congenital hypothyroidism worldwide?
Iodine deficiency
What are the physical symptoms of congenital hypothyroidism?
Glossitis
hoarse cry
myxedematous facies
Why might a infant with Congenital hypothyroidism not present for several months after birth?
Mother’s T3/T4 maintained infant normally
What is myotonic dystrophy?
AD disorder characterized by progressive muscle loss and tonic contraction. No cure exists
FUO is diagnosed when the fever has been present for how long?
2+ weeks
What is it called when a child has a fever, but you cannot find a cause, and it has been less than 2 weeks?
Fever without source
What is the role of the findings of leukocytosis in FUO?
Low PPV, but a normal WBC has a very high NPV
What is Kernig’s sign?
Resistance to extension of the knee
What is Brudzinski’s sign?
Passive Flexion of the hip and knee result in flexion of the neck
What is the role of nitrites in the urine?
IF positive, very likely infection
If negative, moderate possibility that it is false negative.
What is the role of leukocyte esterase in the UA?
SHows WBCs present, but alone is not enough to diagnose a UTI. Nitrites + leukocytes very suggestive
What is the concern of using quinolones in children?
Damage to articular cartilage
What are the abx of choice for UTIs in children?
Ampicillin and gentamicin
Ceftriaxone
Why is macrobid not used for urosepsis, but is in UTIs?
High concentration in the urine, but not blood
What studies should follow for a pediatric episode of pyelonephritis?
Renal and bladder US
When is a voiding cystourethrogram indicated in peds?
After 2 or more febrile UTIs, or when US shows hydronephrosis
What are grades 1-5 of VUR?
1= Urine refluxes part-way up the ureter. 2 = Urine refluxes all the way up the ureter, but there is no dilatation of the calyces or collecting system. 3 = Urine refluxes all the way up the ureter, with some dilatation of the ureter and/or blunting of the calyceal fornices. 4 = Urine refluxes all the way up the ureter, with marked dilatation of the ureter and blunting and dilatation of the calyces. 5 = Massive reflux into a grossly dilated, tortuous ureter, with calyceal dilatation and blunting, and loss of renal cortex.
True or false: children under the age of 3 do not develop asthma
False
True or false: A child with symptoms of asthma who responds to therapy for asthma and has no other identifiable cause for wheezing has asthma by definition, regardless of age.
True
What is reactive airway disease?
Asthma like symptoms that can and go in a child, but tend to dissipate with aging.
What is the most concerning sign for respiratory distress in an infant?
Paradoxical breathing
A hoarse or muffled cry is associated with an upper or lower airway issue in children?
larynx and pharynx
Lower airways are not affected like this.
barky/seal-like cough = ?
Croup
Which is more likely to be inspiratory and which expiratory: wheezing vs stridor
Inspiratory = stridor Expiratory = wheezing
What are polyphonic and monophonic wheezing suggestive of (respectively)?
Monophonic = focal airway obstruction Polyphonic = asthma
Asymmetric breath sounds in a child is almost pathognomonic for what?
FB aspiration
What are the appropriate diagnostic tests for a lower airway FB aspiration in a child? (2)
CXR
Bilateral decubitus or inspiratory/expiratory films
What is the most common cause of wheezing in infants?
Bronchiolitis
What is the treatment of bronchiolitis?
Supportive
What is the usual cause of bronchiolitis?
RSV
Pneumonia due to what pathogen usually presents with a staccato cough between 4 and 12 weeks of age.
Chlamydia pneumoniae
True or false: enteritis is not truly present if diarrhea is not present
True
What are the s/sx of GERD in an infant?
- Forceful vomiting if overfed.
- Dehydration
What are the s/sx of malrotation?
- Bilious emesis
- hematochezia
- Abdominal pain if presents with volvulus + bowel ischemia
What sort of metabolic disturbance is common to peds with pyloric stenosis?
- Hypochloremic, metabolic alkalosis
- Hypokalemia
When should CNS disease be suspected in infants with vomiting?
Absence of fever or diarrhea
what is the usual presentation of a milk allergy in infants?
Diarrhea and rash. Not usually dehydration.
Why isn’t Gatorade recommended for rehydration in children?
high sugar load may cause an osmotic diarrhea effect
What test should be obtained prior to beginning treatment for DKA?
Serum osmolality
what is the “honeymoon” phase of DM I?
About a month after diagnosis, some pt’s insulin production occurs again, but this is transient
What are the components of Cushing’s triad for increased ICP?
- HTN
- Inappropriate bradycardia
- Cheyne-Stokes breathing
What is the classic triad of infantile spasms (west syndrome)?
- Infantile spasms
- Regression of psychomotor development
- Hypsarrhythmia on EEG
What is the prognosis for Infantile spasms?
Seizures will likely abate, but psychomotor retardation is permanent
What is the treatment for bronchiolitis (RSV)?
Supportive
What is the treatment for croup?
Nebulized, Racemic epi
What imaging is needed for suspected cases of child abuse?
Skeletal survey
What is the treatment for type I and II renal tubular acidosis?
Potassium citrate
What is the treatment for the acute onset of Waterhouse friederichsen syndrome?
Replace cortisol
What are the usual s/sx of acute onset of Waterhouse-Friederichsen syndrome?
- n/v
- Abdominal pain
- Purpuric lesions (if meningococcus the cause)
- adrenal glands appear large on CT
What is the stabilizing treatment for an omphalocele?
Wrap it in sterile gauze with saline to prevent heat loss
Which requires emergent surgery: omphalocele or gastroschesis
Gastroschisis
When should vaccinations be deferred in the presence of an illness?
Only if significant (AOM, mild diarrhea do not count)
How does the endotoxin released by meningococci cause DIC?
Incites release of prothrombin and inflammatory agents
Why is leukemia on the ddx for leg/hip pain?
Bone marrow infiltration
True or false: osteomyelitis is almost always accompanied by a fever in children?
False- only about half the time
What hip movement is impaired with a SCFE?
Internal rotation
How will a pt hold their leg if their hip pain is 2/2 an effusion?
Flexed and externally rotated, to “open” the hip joint
Is the pain with osteomyelitis of the hip position dependent?
No
What is transient synovitis associated with?
Recent URI
What are the four major tests (3 labs and image) that should be obtained in the workup of possible septic arthritis?
- WBC
- CRP
- ESR
- plain films
What two etiologies of heart murmurs are more commonly found later in childhood?
ASDs and bicuspid aortic valves
How can you differentiate between ASD and VSD on auscultation?
ASDs will have fixed split of S2, since there is increased blood going through the pulmonic valve. VSDs will not split
Vibratory, soft murmur = ?
Innocent murmur of childhood.
What are the four heart defects that can present with CHF in childhood?
- VSD
- Severe AS
- Coarctation of aorta
- Large PDA
With a moderate VSD, which ventricle typically hypertrophies? Why?
Left d/t volume overload
The VSD shunt occurs in systole, when the right ventricle is also contracting, so the right ventricle ultimately does not fill with the extra volume and dilate, as the VSD flow is immediately ejected into the pulmonary arteries
Which type of seizure is more common with brain tumors, partial or generalized?
Partial
In the workup of FUO, when is a UA and urine culture indicated (males and females)
- under 6 mo circumcised male
- Under 12 mo female or uncircumcised male
In kids with FUO, or common is meningitis?
Uncommon
What is the classic EEG findings of absence seizures?
3 Hz spike and slow wave
What is the classic EEG finding of infantile spasms?
Hypsarrhythmia
Which is classified as a complex seizure: a generalized or partial seizure?
Partial, since this is more consistent with a neoplastic process
Does rotavirus cause dysentery?
No
What are the two interpretations of the romberg test?
If swaying occurs with eyes closed only, then proprioceptive defect
If swaying occurs regardless of eye open/closed, then cerebellar problem
What is post-infectious cerebellitis?
(aka acute cerebellar ataxia) is an autoimmune response that occurs several weeks after a viral infection, causing sudden onset of ataxia, n/v, nystagmus, dysarthria
-Most recover completely in a few months
What is infectious cerebellitis?
- viral/bacterial infx of cerebellum
- Fever, AMS
What is opsoclonus myoclonus syndrome? S/sx?
A paraneoplastic syndrome that occurs most often with neuroblastoma, generally occurs in the younger child (6 months-3 years).
Ataxia is accompanied by intermittent jerking movements (myoclonus) and erratic, jerky conjugate movements of the eyes (opsoclonus).
What is a basilar migraine, and what are the s/sx?
Basilar migraine is an uncommon migraine variant. Patients, usually young women or children, first develop visual phenomena like those of typical migraine except that they are bilateral; transient cortical blindness may also occur. There may be associated:
- Vertigo, ataxia
- Incoordination of the limbs
- Dysarthria, and
- Bilateral limb and perioral paresthesias
- This is sometimes followed by transient loss or impairment of consciousness or by a confusional state. The impairment in consciousness, in turn, is followed by a throbbing headache, which is usually occipital, often with nausea and vomiting.
Since the symptoms resemble those caused by ischemia in the territory of the basilar-posterior cerebral arteries, this entity is referred to as “basilar migraine” or “basilar artery migraine.”
What area of the brain most commonly is the cause of nystagmus?
Cerebellum
Lesions in the cerebellar vermis cause what s/sx?
Truncal ataxia
Dysarthria
Gait abnormalities
Lesions in a cerebellar hemisphere cause what sort of s/sx?
- Ipsilateral limb abnormalities
- Nystagmus
- Tremor/dysarthria
- Spare speech
Looking towards or away from the side of a cerebellar lesions causes nystagmus?
Toward
Lesions of the deep cerebellar nuclei cause what s/sx?
- Resting tremor
- Myoclonus
- opsoclonus
Do infra or supratentorial lesions usually present with cerebellar s/sx of raised ICP?
Infratentorial
What sort of muscle problems do cerebellar hemispheric lesions cause?
Changes in muscle tone and DTRs, but usually lead to hypotonia and hyporeflexia
What are the s/sx of supratentorial lesions? Side?
focal motor and sensory abnormalities on the side opposite of the lesion
Brain stem tumors are often associated with what sort of neuro sign?
Cranial nerve palsies and gaze palsies
How can you tell if there is hepatomegaly?
If lower edge of the liver is palpable more than 2 cm beyond the right costal margin in a child, or more than 3.5 cm in an infant
What is the normal liver span?
6-12 cm at midclavicular line
What are the labs that are worked up with HSP?
- CBC with differential
- UA
- BUN and creatinine
Is ESR elevated with HSP?
No
Are platelets decreased with HSP?
No
What is the major complication associated with HSP?
Chronic renal failure (5% of children)
What is the treatment and f/u for HSP?
Corticosteroids (maybe), but usually self limiting. Serial UAs to check renal function.
What bowel disease is associated with HSP?
Intussusception
What is the correct airway positioning for the following pts:
- Infants
- 1-3 years
- 1-8 years
- 8+ years
- Infants = sniffing
- 1-3 years = Neutral
- 1-8 years = extended neck
- 8+ years = hyperextended neck
What determines the presence of shock in children? Why?
- tachycardia, weak peripheral pulses, AMS
- NOT BP, since kids can increase SVR markedly
True or false: almost all medications that can be given IV can be given IO
True
What is the second line access site if IV cannot be established in an emergency?
IO
What are the four major complications to using IO for access?
- OI
- Fractured bone
- Overlying cellulitis
- Bone recently used for IO access
What major complication can result from IO access?
Compartment syndrome
When should dopamine/epi be started in a kid when resuscitating them?
after 60cc/kg
What is the drug of choice for PEP of meningococcemia in adult and kids?
Adults = cipro Kids = rifampin
What are the components of the AEIOU TIPS mnemonic for AMS?
- Alcohol
- Epilepsy
- Infection
- Overdose
- Uremia
- Trauma
- Insulin
- Psychosis
- Stroke/shock/space occupying mass
What are the five stages of Fe intoxication?
- GI phase
- Latent
- Shock (12-24 hours)
- Hepatic failure (2-3 days)
- Gastric outlet obstruction weeks later 2/2 strictures
When is activated charcoal indicated and contraindicated?
INdicated = ingestions not d/t small molecules or heavy metals
Contraindicated if loss of airway protection
What causes the wide complex tachycardia with TCA overdose?
Na channel blockage in the purkinje fibers
What is a BRUE?
Brief resolved unexplained event–
- Pallor
- apnea/bradypnea
- Marked change in tone
- AMS
In an infant that is not explained by an organic cause, and resolves without intervention
Which of the following can cause subdural hematomas in an infant:
- seizures
- CPR
- Short falls (less than 4 feet high)
None of these cause subdurals
How much weight do infants gain, on average, per day?
25g/day
What are the three criteria used to define FTT?
- Weight below 3rd percentile
- Weight for height/length less than 3rd percentile
- Rate growth crosses two major percentiles on growth chart
What purpose is served by getting a BUN and creatinine in FTT?
See if renal function is the cause, or is affected.
What is the inheritance pattern of CF?
AR
What is the role of 5-ASA in Crohn’s disease?
No longer recommended due to inadequate evidence of efficacy. Still useful in UC though
What are the general drugs used to treat crohn’s disease? (3)
Methotrexate
Thiopurines
Corticosteroids
What is the MOA of sodium bicarb in TCA intoxication?
TCAs inhibit Na fast channels in the his-purkinje system, resulting in decreased conduction velocity, and prolongation of refractory period
Na bicarb increases serum pH and extracellular Na. The increased pH decreases TCAs’ avidity for the Na channels
What EKG finding in TCA overdose is an indication for Na bicarb use?
QRS interval over 100 msec
What is the role of Na bicarb use in ASA intoxication?
Alkalinizes the urine, to help excrete salicylic acid
What is Panner’s disease?
Osteochondrosis of the capitellum of the elbow. IT causes pain and stiffness in the affected elbow, and may limit extension.
How can you differentiate between scarlet fever vs EBV with rash after PCN?
Mono will have HSM, and the pt will not get significantly worse after several days like they would with scarlet fever
When does handedness develop in children?
around 2 years. Before this may indicate muscular disorder
When does imitation start?
18 mo
What is the single highest risk factor for cerebral palsy?
Prematurity
What are the MRI findings of the head in pts with cerebral palsy?
- Irregularly shaped ventricles and increased FLAIR signal indicating periventricular leukomalacia
- Thinned corpus callosum
What sort of cerebral palsy is associated with kernicterus? What are the s/sx of this, and why?
Dyskinetic
slow, uncontrolled movement throughout, d/t damage to the basal ganglia
What is the diagnostic study of choice for Down syndrome?
Lymphocyte karyotype–FISH is for mosaicism
What is the most common cardiac defect with Down syndrome?
Endocardial cushion defect
What are the components of the atopic triad?
Eczema
Asthma
Allergies
What is perioral dermatitis?
Variant of rosacea, commonly seen in adolescents
What is pseudofolliculitis?
Papules, but not pustules, usually seen in the beard area
What are three major factors that can worsen acne?
- Make-up
- Manipulation
- Overzealous cleaning
What is the treatment for mild acne? What about mild, comedonal acne?
- Mild = OTC benzoyl peroxide
- Topical Retinoids for comedonal
What is the treatment for moderate acne?
-Mild treatment strategies + abx
What is the treatment for severe acne?
-oral retinoids
When should topical retinoids be applied, and why?
-In the PM, since causes photosensitization, and benzoyl peroxide (applied in the AM) inactivates it
Besides teratogenicity, what are the side effects of oral retinoids?
- Depression
- Hypertriglyceridemia
- Hepatitis
- Decreased night vision
Which abx classically causes dental staining in pts under the age of 9?
Doxycycline (tetracyclines)
What is the toxin found in poison ivy? Is this transferred through blisters?
- Urushiol
- Not transferred through blisters
What is the most potent corticosteroid that can be given for skin rashes?
Clobetasol
What is the treatment for head lice?
OTC permethrin shampoo
What is the treatment for scabies?
Permethrin
Itch usually persists after scabies killed. treat with topical steroids
What are two diseases that have a diaper rash as part of their presentation?
- Zn deficiency
- Langerhans cell histiocytosis
What is the treatment of choice for tinea capitis?
Oral griseofulvin
Hypopigmented macules on the face = ?
Pityriasis alba
What urine protein/Creatinine ratio is diagnostic of nephrotic syndrome? What amount of protein with a 24 hours urine collection?
- 2.5+
- 40mg/m^2/hr
True or false: interstitial nephritis is associated with significant proteinuria
False
What are two possible etiologies of hyponatremia with nephrotic syndrome?
- Fluid overload
- Pseudohyponatremia from elevated lipids
What is the treatment for nephrotic syndrome in children? Why?
- Corticosteroids
- Na restriction, since they are already fluid overloaded, and this will exacerbate this
What life threatening infection can occur with anasarca 2/2 nephrotic syndrome?
Bacterial peritonitis
What happens to the tonsillar tissue with sickle cell disease?
Hypertrophy