Resp Flashcards
A 3 year old girl is on 50ucg of fluoxetine (assuming this is fluticasone) INH BID for asthma. She has 2 nightly exacerbations per week and has missed a few days of daycare. On exam, she is breathing comfortably and has no wheeze; however, she does have a prolonged expiratory phase. How do you change your management?
a) Add a LABA
b) Add a Leukotriene inhibitor
c) Start oral prednisone
d) Increase dose of fluoxetine to 100ucg BID (medium dose) -
Increase dose of fluoxetine to 100ucg BID (medium dose) -
Add a LABA (based on CTS 2012 guidelines not approved for PRESCHOOL, must be over 6yo)
b) Add a Leukotriene inhibitor based on CTS 2012 guidelines not approved for PRESCHOOL, must be over 6yo)
c) Start oral prednisone (not recommended by CTS for part of control management )
d) Increase dose of fluoxetine to 100ucg BID (medium dose) - based on CPS recommend medium dose then titrate down to lowest level tolerable. She is on low dose now
Patient with description of pneumonia, and LLL opacity on chest x-ray. Emesis and fever for the past 2 days, crackles on exam. What do you treat with?
- Azithromycin
- Ampicillin
- Ceftriaxone
- Cefurixime
amp
2 month old child is found to have respiratory distress and focal right-sided crackles on exam. A CXR was done showing a defect of the right diaphragm, CDH vs evantration. What is the next test?
- Diaphragm Fluroscopy
- MRI chest
- CT chest
- Exploratory laparoscopy
diaphram fluorscopy
Diaphragmatic Eventration - Abnormal elevation, consisting of a thinned diaphragmatic muscle, that causes elevation of the entire hemidiaphragm, or more commonly, part of the anterior aspect. Most are asymptomatic and do not need repair. Can see on lateral that diaphragm attach in the right places, anteriorly and posteriorly. Sometimes see the gut in the chest, but still separated by diaphragm.
In CDH there is an defect in the diaphragm. Diaphragm fluoro is the first line step b/c in CDH diaphragm won’t move
Fluro aka sniff test- determines if there is PARALYSIS of the diaphram, which you have in CDH but not in eventration
Patient with CF, description of pulmonary exacerbation with a decrease in FEV1 and decrease in weight, increase cough with increased sputum. What is the likely pathogen?
- Burkholderia cepatia
- Pseudomonas aeruginosa
- Stenotrophomonas
- Aspergillus
Pseudomonas aeruginosa
Staphylococcus aureus and Pseudomonas aeruginosa are the most prevalent pathogens in most age groups and are associated with accelerated loss of pulmonary function
Common organisms, include S. aureus, nontypable Haemophilus influenzae, P. aeruginosa; B. cepacia and other gram-negative rods
-The standard of practice has been to treat pulmonary exacerbations in patients with P. aeruginosa with two antipseudomonal antibiotics
Father brings his overweight son to your office because he becomes short of breath when playing with peers. PFTs completed and FEV1 82% and FVC 80% pre-bronchodilator and increase to 87% and 85% respectively afterwards. Father has allergic rhinitis and boy has history of eczema. What do you recommend?
1) ICS and salbutamol
2) Salbutamol before exercisee
3) Conditioning program
conditioning program
ASTHMA diagnostics:
fev1/fvc = 82/80 = 1.02
FEV1 NOT increased by 12% post bronchodialato
6 year old girl with otitis media and sinusitis, found to have bilateral wheezes and crackles on exam as well as clubbing. She also has cobblestoning of the posterior oropharynx. Sweat chloride is negative. Which of the following tests would reveal the diagnosis?
a. CT sinuses
b. Electron microscopy of respiratory mucosa
c. Immunoglobulins
d. Alpha 1 anti-trypsin levels (serum)
EM
This is ciliary dyskinesia- aka Kartagener syndrome- CHAPTER 392 nelson
Diagnosis – EM of nasal epithelium or bronchial brushing– assess ultrastructural defects within the cilium
most often see shortening or absence of dynein arms
Imaging studies are helpful – can see paranasal involvement. CXR shows bilateral lung overinflation, peribronchial infiltrates, and lobar atelectasis and CT of the chest often reveals bronchiectasis. Can also have reduced nasal NO levels
Management is supportive - with chest PT and antibiotics
Primary Ciliary Dyskinesia – inherited disorder with impaired ciliary function
4 main features: -
chronic sinopulmonary disease
persistent middle ear effusions
laterality defects
infertility
Clubbing is a sign of long-standing pulmonary involvement
In empyema, fluid is most likely to show:
a. LDH 300
b. Fluid protein to serum protein > 0.5
c. Glucose 4.8 mmol/L
Fluid protein to serum protein > 0.5
Light’s Criteria Rule – if you have at least one of the following then the fluid is defined as exudate:
Pleural fluid protein/serum protein ratio greater than 0.5, or
Pleural fluid LDH/serum LDH ratio greater than 0.6, or
Pleural fluid LDH greater than two-thirds the upper limits of the laboratory’s normal serum LDH
A child is known to have congenital central hypoventilation syndrome (CCHS). He also had Hirschsprung disease. What test is required for annual screening for another associated condition?
a. Hearing test
b. Holter
c. MRI head
holter
CCHS- symptoms manifest after 1m of age and often into childhood and adulthood. Hypoventilation typically during sleep only. (Nelson’s pg 1520 -chapter 412).
Do not appropriately respond to hypercarbia + hypoexemia +/- anatomic autonomic nervous dysregulation
Genetics- PHOX2b, mostly de novo, can be AD
what are the surveillance needs for patient with PHOX2b mutations?
at baseline near MRI to exclude structure, cardiac eval, neuromusc, inborn errors of metabolism, r/o hirrshprung and neural crest tumor
this is cchs - congenital hypoventilation syndrome
1) polyomnography - q6 month for 1st 3yo, then q6month
2) echo - as above for co pulmonale
3) CBC and gas yearly
72 hour holter - for asysstole, annually
4) neural crst- neurpblastoma, chest AUS and urine catecholaemine q3month till 2yo then q6month till 7yo
5) neurocogn fuxn
A 7 year old boy with asthma is using ventolin. On your follow up visit, you find out that he uses his ventolin 2 puffs, 3-4 times per week, and has had 2 courses of systemic steroids in the last year. What should be your next course of action?
a. Increase ventolin dose to 4 puffs as needed
b. Add inhaled corticosteroid
c. Add oral prednisone
Add inhaled corticosteroid
poor control with day time sx and exacerbation needing oral steroids
A 6 year old Greek girl presents with a high fever, tachypnea, and RUQ pain. On exam, there is no guarding in the abdomen. What is the most likely diagnosis?
a. Bacterial pneumonia -
b. Pleurodynia -
c. FMF -
bacterial pneumonia
Pleurodynia - but no h/a and malaise reported here, more common in adolescent and also colic pain
caused most frequently by coxsackie B viruses 3, 5, 1, and 2 and echoviruses 1 and 6, is an epidemic or sporadic illness characterized by paroxysmal thoracic pain, due to myositis involving chest and abdominal wall muscles.
A child comes in with wheezing for the last few weeks. It started after playing at a friend’s house. She has not responded to corticosteroids or antibiotics. Her CXR is normal and she is not in respiratory distress. What is the next best management.
a. bronchoscopy
b. racemic epinephrine
c. ventolin and steroids
d. chest CT
e. Neck X-ray
bronchoscopy
Need to rule out foreign body (even though CXR is normal) - need INSP and EXP view
Most foreign bodies lodge in right bronchus
Can also be in the larynx or trachea
Can be asymptomatic and CXR is normal in 15-30% of cases.
If there is a high index of suspicion, bronchoscopy should be performed, despite negative imaging
Want PA, lateral films, and expiratory PA film is most helpful because during expiration the bronchial foreign body obstructs exit of air from obstructed lung, get emphysema, air trapping, with persistent inflation.
Severe asthmatic, tried multiple doses beta agonist and IV steroids with no response what should you do next?
a) one dose of MgSO4
b) INH heliox
c) Aminophylline infusion
one dose MgS04
CPS - asthma exacerbation statement
In severe exacerbation, therapies to consider include: oxygen, ventolin, atrovent, PO or IV steroids, continuous ventolin nebs, IV MgSO4
Give IV MgSO4 if not responding to ventolin/atrovent and steroids. Should consider this in the first 1 to 2 hr, if they are not fully responding to treatments.
SIDE EFFECT: hypotension and bradycardia as side effects,
Bronchiectasis-5 yo with productive cough day and night, wheeze, crackles, clubbing, how will you get the diagnosis
a) Immunoglobulins
b) A1AT - this is from Pizz defect, causes emphysema, rarely sx in children (nelson chapter 385) but can cause clubbing
c) Biopsy and microscopy
d) CT sinuses
bx and microscopy
Ddx - primary ciliary dyskinesia vs CF
Testing for CF here not an option (sweat chloride)
Hence test for PCD - nasal scraping/biopsy under EM (as above questio
Baby with inspiratory stridor, soft voice, vocals abduct in inspiration, what is the diagnosis? (unsure - picked through process of elimination)
a) Laryngomalacia
b) Tracheomalasia
c) Vocal cord palsy
laryncogmalacia
Abduction with inspiration is normal - if it said ADDUCTION or incomplete abduction/asymmetrical with inspiration, would choose vocal cord palsy
Kid has eczema and has cough with exercise relieved an hour later. Normal FEV. Normal PFT. What do you do to get the diagnosis?
a) Methalcholine challenge
b) Exercise with spirometry
MET challenge >16 is normal
CTS 2012 asthma guidelines
Do methacholine challenge when patients fail traditional PFT testing, but symptoms are highly suggestive of asthma. Test causes bronchoconstriction.
Can make diagnose when you give a dose of methacholine <4mg/ml, and this causes a decrease in FEV1
If the FEV, does not fall by at least 20% after the highest concentration (e.g., 16 mg/ml) then the PC20 should be reported as “> 16 mg/ml”
A child has CF. Family wants to use alternative medicine. Homeopathy has been proven effective for which condition:
a) Diarrhea
b) ADHD
c) Allergies
only one with “well designed studies and positive effect for homeopathy”
is DIARRHEA
16 year old competitive hockey player who had a history of asthma that was asymptomatic for 7 years. Has been having exercise induced symptoms and he’s using ventolin 6x/week before and during games. PFTs show normal FEV1 and FEV1/FVC but he has a positive methacholine challenge. What do you recommend?
Low dose inhaled corticosteroids
Stop playing high level hockey
5 day course of oral corticosteroids
LABA in the morning on the days of the games
Low dose inhaled corticosteroids
As per CTS 2012 guidelines, if physical activity affected, then add low dose steroid controller. See above
Next step: Since he is >12yo, once at medium ICS levels, can add LTRA or LABA as adjunct
What is the most likely side effect of inhaled steroids? Decreased linear growth. Immunosuppression Moon facies Hypertension
dec linear growth
oral candidiasis, bronchospasm
growth suppression
HPA axis supp
7 year old girl with persistent cough, wheeze, nighttime cough, worse with activity. FEV1/FVC is 75%, bronchodilator increases her FEV1 by 15%. What do you recommend?
(**NOTE THERE WERE NO FURTHER OPTIONS in 2016 exam- must check other exams)
Inhaled corticosteroid with SABA PRN
Avoid the activities that trigger the symptoms
Inhaled corticosteroid with SABA PRN
4 year old with CF, most likely deficiency:
a. Iron
b. Calcium
c. Vitamin D
d. Zinc
Vitamin D
85% of CF patients have pancreatic insufficiency, so can’t absorb fat or protein , and can’t absorb fat soluble vitamins - ADEK!
Teen with cystic fibrosis has worsened cough, sputum, drop in PFT. What is the most appropriate antibiotics to start? Ceftaz + tobra Clox and tobra Clox and ceftaz PO cipro
ceftaz and tobra
P. aeruginosa combine tobramycin with an antipseudomonal semisynthetic penicillin (eg, piperacillin-tazobactam), an extended third-generation cephalosporin (eg, ceftazidime, cefepime), a carbapenem (eg, imipenem-cilastatin or meropenem, but not ertapenem, which has less activity against P. aeruginosa), or less frequently a monobactam aztreonam.
CF kid w green sputum, what do you tx w?
a. Ceftaz and tobra IV
b. Ceftaz and clox
c. Clox and tobra IV
d. Vancomycin
a. Ceftaz and tobra IV
Kid w viral wheezing, worse w URTI
a. Give steroids & ventolin in winter & fall time
giver steroids and ventolin during witner fall time