Peds Pulm Flashcards
Are crackles heard on inspiration or expiration?
inspiration
What are the 4 possible causes of crackles heard on auscultation?
- Bronchiolitis
- Pulmonary Edema
- PNA
- Asthma
(B PAP)
Are wheezes heard on inspiration or expiration?
Predominantly on expiration
What are the 3 possible causes of wheezes?
- Asthma
- Bronciolitis
- FB
(You are still FAB even if you wheeze)
What are the 2 possible causes of Rhonchi?
- PNA
- Cystic Fibrosis
Is stridor heard on inspiration or expiration?
Inspiration
What are the 6 possible causes of Stridor?
1. Croup
- Laryngomalacia
- Subglottic stenosis
- Allergic rxn
- vocal cord dysfunction
What ages usually get croup?
6mo-5y/o
The following are s/s of what?
- URI sxs
- Inspiratory stridor
- Hoarsness
- Barking, “seal-like” cough
Viral Croup (laryngotracheobronchitis)
What is the #1 etiology of Viral Croup
Parainfluenza virus
What is viral croup?
Subglottic narrowing
(most likely caused by parainfluenza virus)
What is the Wesley Croup Score used for?
to distinguish b/w mild, mod and severe croup
What is seen on x-ray for viral croup?
(POPCORN)
“Steeple sign”
(Bi, symmetrical subglottic narrowing)
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How do you manage mild croup?
supportive therapy
cool mist
How do you manage moderate viral croup (score >3)?
(KNOW)
Dexamethasone
+/- Nebulized racemic epinephrine
How do you manage severe croup?
Airway support
Admit
IV corticosteroid, nebulized epi
etc
What is Epiglottitis caused by?
H. flu
(incidence reduced by HIB vax)
What are the 3 main s/s of Epiglottitis? (3 D’s)
What type of posturing will the pt have?
1. Dysphagia
2. Drooling
3. Distress
Tri-pod posturing
T/F: you should always use a tongue blade when examining a pt with suspected epiglottitis?
FALSE
NEVER DO THIS
What is seen on x-ray for epiglottitis?
(KNOW)
“Thumb sign”
(Enlarged epiglottitis protruding from the anterior wall of the hypopharynx)
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How do you manage Epiglottitis? (3 steps)
- Airway support
- blood culture
- IV abx- 3rd gen cephalosporin + Vanco
How old are patients with Bronchiolitis?
<2y/o
(peak 2-6mo old)
What is Bronchiolitis?
Lower respiratory tract infection that affects the bronchioles
What is the #1 cause of Bronchiolitis?
RSV
Is Croup an upper or lower resp tract infection
upper
Bronchiolitis:
LRT sxs peak on days ___ to ____
3-5
Bronchiolitis sxs usually resolve over ___ to ___ weeks
2-3 weeks
What are heard on auscultation in bronchiolitis?
Wheezing
Crackles
How do you dx Bronchiolitis?
Clinical
How do you tx Bronchiolitis?
- Supplemental O2 (maintain above 90-92%)
- Maintain hydration
- Nasal suctioning
- (Albuterol and Epi NOT recommended)
What is the most important cause of LRTI in children <1 y/o?
RSV
What are sxs of RSV
- Diffuse wheezing and tachypnea following URI sxs
- Low grade fever
- LOTS OF MUCUS! (if no mucus, not bronchiolitis or RSV)
What is seen on CXR in RSV?
(KNOW)
Hyperinflation
Peribronchial thickening
What is heard on auscultation in RSV?
Crackles, prolonged expiration, wheezing, retractions
How is RSV diagnosed?
Rapid assay
CXR for secondary PNA
How do you tx RSV?
- Supportive
- Ribavirin/Palivizumab- if immunocompromised/indicated
What is the most common cause of respiratory distress in preterm infant?
(KNOW)
Infant Respiratory Distress Syndrome (RDS)
“Hyaline Membrane Disease”
What is Infant Respiratory Distress Syndrome (RDS), “Hyaline Membrane Disease”
- Deficiency of surfactant production + surfactant inactivation by protein leak into airspaces
- hypoxia due to V/Q mismatch
What is the main risk factor for Infant Respiratory Disterss Syndrome (“Hyaline Membrane Disease”)?
Prematurity (< 37wks, highest if <28 wks)
What is seen on CXR in Infant Respiratory Distress Syndrome?
“Ground-glass appearance”
How do you tx infant RDS? (3)
- Resp support
- Steroids
- Surfactant Replacement
What are s/s of PNA in an infant?
- F
- cough
- +/- preceding URI
- Poor feeding
- irritability
What is a sign of imminent respiratory failure in a pt w/ PNA?
Grunting
What is heard on auscultation in a pt w/ PNA
- Crackles
- Rhonchi
- Decreased air movement
What is the MCC of PNA 1-12mo of age
Viral MC
RSV #1
What is the MCC of PNA in patients 2-5yrs of age
Viral MC
Parainfluenza, influeza, others
What is the MCC of PNA in patients 3-12mo of age
Viral MC
RSV #1
What is the MCC of PNA in patients 5-18yrs of age
Bacterial MC
S. Pneumo
Atypical bacteria
Is the MCC of PNA under the age of 5 viral or bacterial
viral
What is the MCC of bacterial pneumonia for all ages?
Strep Pneumo
What is the MCC of afebrile PNA of infancy?
Chlamydia
PNA on x-ray: Bacterial or viral?
Lobar= ____
Infiltrates=_____
Lobar= bacterial
Infiltrates= Viral
How do you tx PNA in a patient < 3-6mo old or if they are hypoxemic?
- ADMIT
- Amoxicillin
How do you tx PNA if atypical bacteria is NOT suspected?
Amoxicillin
How do you tx PNA if atypical bacteria is suspected?
Azithromycin
What is the MC age of pts w/ afebrile PNA of infancy?
infants 2wks- 4 months
What is the incubation period of Pertussis?
7-10d
What are the 4 complications of Pertussis in infants/young children?
- Hypoxia
- Apnea
- PNA
- Seizures
(“PASH”)
What are the 3 phases of Pertussis?
P1- Catarrhal (URI, fever) x1-2wks
P2- Paroxysmal (Cough, inspiratory whoop, post-tussive emesis) x2-6wks
P3- Convalescent (cough) x weeks-months
What is the gold standard for Dx of Pertussis?
PCR and Culture of nasal secretions
How do you tx pertussis?
- Macrolides (Z-pack), TMP-SMX
- Prophylaxis for household
What is the MC life-shortening genetic disease in white individuals?
Cystic Fibrosis
What is the inheritance pattern of Cystic Fibrosis?
Autosomal Recessive Disorder
What is the hallmark sx of Cystic Fibrosis?
(KNOW)
- High salt content in sweat glands
What are 4 s/s of Cystic Fibrosis
1. High salt content in sweat glands
- Recurrent sinus infections
- Nasal polyps
- Chronic ear infections
What are the 2 MC infectious organisms early in life in a pt w/ Cystic Fibrosis?
H. Flu
Staph aureus
How do you dx Cystic Fibrosis
Newborn screen
Sweat test
What is the MCC of death in Cystic Fibrosis
Respiratory failure at ~40y/o
How do you tx Cystic Fibrosis?
- Airway clearance therapies
- Chest percussion
- Regular exercise
Treat CF pts early if cough or respiratory infections >___ week(s) as viral URIs often lead to pulmonary exacerbations
>1 week
What are CF pts at an increased risk for developing?
Hyponatremic dehydration