Pulmonology Flashcards
Narrowest portion of airway in pediatrics
Cricoid cartilage
Narrowest portion of airways in adults
Vocal cords
Clinical significance of airway diameter
Adult has widder diameter than pediatrics. Patient with narrow airway will develop resistance thus leading to HYPOXEMIA
1st line of defense in the respiratory tract:
Vibrissae
Ciliated lining epithelium
Physiologic mechanism
Immunologic mechanis
Boundary between the upper and lower airways
Glottis or Larynx
What are the three paired cartilages of the larynx?
Artyenoid
Cuneiform
Corniculate
What are the unpaired cartilages of the Larynx?
Epiglottis
Thyroid
Cricoid
Anything found inside the thoracic cavity is part of the ____
Lower respiratory tract
Anything found outside the thoracic cavity is part of the ____
Upper respiratory tract
Cough receptor is found mostly at the ___
Airways
Cough receptor may even be present at the ___
Middle ear
Base of the lungs
Good treatment to be given
Oxygen Fluid Drugs with one pharmacological action Fever relief Chest physiotherapy
Oil based is not good for internal applications because it can cause ____
Lipoid bronchitis
This is known as deep tissue neck infection which is located ____ to the esophageal wall
Retropharyngeal abscess
Posterior
The nodes that drain from the retropharyngeal abscess
Nasopharynx
Paranasal sinus
Middle ear
Retropharyngeal abscess is seen in which age group?
3-4 years old
Causative agents of Retropharyngeal abscess
Group A strep
Anaerobes
S. Aureus
Differentials of Retropharyngeal abscess
Foreign body aspirate
Epiglottitis
Meningitis
Clinical manifestation of Retropharyngeal Abscess
High grade fever Irritability Decrease food intake or dysphagia Drooling Sorethroat Neck pain Muffled voice Stridor Distress Cyanosis
Physical finding examination of Retropharyngeal abscess
Foward buldge in the pharyngeal wall
Complication of retropharyngeal abscess
Upper airway obstruction
Aspiration pneumonia
Extension to the mediastinum
Treatment for retropharyngeal abscess
3rd gen cephalosporin + ampicillin-sulbactam or clindaymycin
Foreign body aspiration is commonly seen in what age group
Older infants and toddlers less than 5 years old
More severe inflammatory reactions if _____ because it can cause ____
Organic material
Pneumonitis
When will a FBA be a medical emergency
If it causes airway obstruction
This property can determine the clinical manifestation of an FBA
Size
FBA clinical manifestation
Choking
Coughing + wheezing
Location of the majority of the FBA
Right bronchus
FBA 3 stages of signs
Paroxysmal stage of coughing, choking, and gagging and airway ostruction
Asymptomatic interval
Complications of obstruction, erosion, infection
FBA management
Bronchoscopy
Antibiotics
Steroid
Surgery
4 croup syndromes manifestations
Bark like or brassy cough
Hoarseness
Stridor
Respiratory distress
4 croups syndromes
Epiglottitis
Acute laryngeotracheobronchitis
Acute laryngitis
Bacterial tracheitis
The most common cause of epiglottitis
H. Influenzae type B
Other causes of epiglottitis
S. Pyogenes
S. Pneumoniae
S. Aureus
The age group in epiglottitis which dont preclude adulthood
2-4 years old
Hyperextension of the neck is seen in ___
Epiglottitis
Obstruction in the epiglottis will manifest ___
Dysphonia
Dysphagia
Dyspnea
Drooling
In epiglottitis the attempt to breathe will cause them to assume the ___
Tripod position
Lateral xray of the neck of the epiglottitis will manifest what sign?
Thumb sign
The DOC for epiglottitis
Ampicillin
If patient is resistant to Ampicillin for epiglottitis what will you give?
Ceftriaxone
For household who are exposed to epiglottitis you give?
Rifampicin for 1 day
A serious case of Croup
Acute lanryngotracheobronchitis
The common cause of croup
Parainfluenza virus
Other causes of croup
Influenza
Adenovirus
RSV
Measle
The age group usually affected by croup
3 months to 5 years peak at 2 years
Neck xray in patients with Croup
Steeple sign or Pencil sign
Drugs that is used in managing Croup
Racemic epinephrine
Dexamethasone
Budesonide
What of the etiology of Acute Laryngitis
Parainfluenza virus
Age onset of Acute Laryngitis
2-4 years old
Mode of transmission of Acute Laryngitis
Droplet nuclei
A child with frequent throat infection is predisposed to ____
RHD
Management of Acute Laryngitis
No DOC
supportive teatment with Lozenges and Ginger
This Croup syndrome doesnt involve the epiglottis
Bacterial tracheitis
The most common etiology of bacterial tracheitis
S. aureus
Minor causes of bacterial tracheitis
M. catarrhalis
H. influenza
Anaerobe
Age group onset of bacterial tracheitis
5-7 years old
How to differentiate bacterial tracheitis with others?
Can lie flat
No drooling
No dysphagia
Is xray suggestive of bacterial tracheitis
NO
The treatment for bacterial tracheitis
Vancomycin
Beta lactamase resistance antibiotics (meth, naf, -cillin)
Parenchymal disease
CAP
What is the course of CAP
Acute onset, few hours to 1-2 days
Etiology of CAP in the following:
Developing countries:
Developed countries:
Philippines:
Bacterial
Viral
Mixed
Etiology of CAP in these age group: NEWBORN
A - group A strep (local)
B - group B strep (worldwide)
Treatment: Ampicillin
E - E. coli
Treatment: Gentamycin
Etiology of CAP in these age group: 2-11 months
C. trachomatis with history of conjunctivitis
Treatment: Macrolides
CMV
P. carinii (with HIV)
Patient presents with cough, crackles, playful and suck well but NO FEVER
Afebrile pneumonia syndrome
Etiology of CAP in these age group: PRESCHOOL
RSV Parainfluenza Influenza A and B Rhinovirus Adenovirus S. pneumonia (>2y/o) H. influenza (up to 2 years old) S. aureus
Etiology of CAP in these age group: SCHOOL AGED GROUP
Mycoplasma pneumoniae
Parainfluenza
Influenza
S. pneumonia
4 stages of pneumonia
Consolidation
Red hepatization
Gray hepatization
Resolution
Name the usual agents involved in LOBAR PNEUMONIA
H. influenza
S. pneumonia
Name the usual agents involved in BRONCHO-PNEUMONIA
H. influenza
S. pneumonia
S. aureus
Name the usual agents involved in INTERSTITIAL PNEUMONIA
Mycoplasma
Chlamydia
Viral
Bacterial pneumonia usually produce what kind of fever?
High grade fever
Cough IS ALWAYS present in pneumonia except in ?
Neonates
The most important clinical predictor of pneumonia ?
Tachypnea
Fill in the Resipratory rate of the following: >5 y/o 1mo - 12mo 13mo - 5y/o Neonate
> 30
50
40
60
Bacterial pneumonia associated with skin infection, etiology:
S. aureus
S. pneumonia
H. influenza
Bacterial pneumonia associated with eye infection + rash, etiology:
Measles
Two manifestations that is more common in viral pneumonia than bacterial pneumonia:
Wheezing
Grunting
Two common etiology of Atypical pneumonia
Mycoplasma
Chlamydia
Delayed resolution of sx
Atypical pneumonia
DOC for atypical pneumonia and in case of refractory to ampicillin you will used?
Macrolide
2nd gen of Cephalosporin
In chest xray atypical pneumonia will usually present as ___
Interstitial pneumonia
Gold standard in the diagnosis of bacterial pneumonia
Culture of lung aspirate
Gold standard in the detection of viral pneumonia
Tissue culture
Viral antigen
Tracheal aspirate must only be done within __ of intubation
1 hour
Is sputum culture and gram stain suggested in children?
NO. Unable to expectorate
Is blood culture suggestive in determining pneumonia?
Low yield but MUST DO IN CONCOMITTANT SEPSIS
CAP complications:
Pleural effusion
Pneumothorax
Atelectasis
Normal pleural fluid per hemithorax
1-2ml
Fill in the following:
Pneumothorax Pleural effusion Consolidation
Percussion:
Tactile fremitus:
Hyperressonant Dull Dull
None Decreased Increased
Differentiate between PF CHON and LDH between Transudate and Exudate:
CHON LDH
Transudate: 3g/dl >200IU
Transudate are secondary to ___ and examples are:
Inflammation
CHF
Tb
Kidney disease
Exudate are secondary to ___ and examples are:
Infection
Pneumonia
Serum analysis of CHON and LDH for pleural effusion
CHON LDH
Transudate: 0.5 >0.6
Etiology of a SEROUS pleural effusion and their treatment:
Infant: H. influenza -> ampicillin
Preschool: Strep -> penicillin
Etiology of a PURULENT pleural effusion and their treatment:
Staph -> oxacillin
Indication of Tb pleural effusion:
Protein >5g/dl
Hemothorax indication:
Hematocrit is >50%
The most common cause of PF in neonates
Chylothorax
Indication of Chylothorax
TAG >110 mg/dl
The most common cause of pneumothorax in adults?
Stab or trauma
Major components of air in pneumothorax
Nitrogen
The most common cause of pneumothorax in children?
Infection due to alveolar rupture
Patient experince an abrupt onset of dyspnea and CHEST PAIN, what is your diagnosis?
Pneumothorax
What is the PATHOGNOMONIC sign of a PNEUMOTHORAX?
Absent of lung markings
Pneumothorax management for the following:
Mild
Massive
Emergency
Mild: 100% oxygen principle fo denitrogenation
Massive: chest tube thoracostomy
Emergency: direct needle aspiration
Imperfect expansion or collapse of a segment or lobe of a lung
Atelectasis
Three etiology of atelectasis:
External pressure
Intrabronchial obstruction
Reduced amplitude of expansion
The most common cause of Atelectasis
Intrabronchial obstruction
The cause of external pressure:
External compression within the thoracic cavity
The usual cause if intrabronchial obstruction in atelectasis
Mucus plug
Nitrogen is absorbed within __
2-3 hours
Oxygen is absorbed within ___
6-10 mins
All distal to the occluded airway will be ___
Collapsed
Usually in atelectasis if only one segment is involved it is ___
Asymptomatic
The most commonly collapsed segment in atelectasis
RLL and LLL
The most common segment collapsed in atelectasis due to PTB?
RML
The kind of angle of the horizontal fissure in consolidation? atelectasis?
Obtuse or same
Acute
Typical findings of Atelectasis in CXR?
Opacity: Wedge shape Triangle shape Fan shape Pyramid shape
Only atelectasis will cause the mediastinal shift to the?
Same side
Management of atelectasis
Antibiotics and Bronchodilators in pneumonia
Bronchoscopy in Foreign body
Corticosteroid in asthma
Tb drugs in PTB
Gold period for observation of Atelectasis
8 weeks
Etiology of bronchitis
Parainfluenza virus
Adenovirus
Only seen in bronchitis as clinical manifestation
Vomitting
Auscultation in bronchitis is usually but can also manifest
Normal
Wheezing, crackles, rhonchi
Resolvement of bronchitis is usually in ___
2-3 weeks
In some cases of bronchitis there is ___ in bronchial markings
Increased
Etilogy of Bronchiolitis
RSV
Parainfluenza
Adenovirus
No bacterial cause
Usually bronchiolitis is seen in __
Infancy 1-2 yo, peaks at 6-12months
Triad of bronchiolitis
Tachypnea
Chest retraction
Wheezing
The most important differential diagnosis of bronchiolitis is ___
Asthma
The CXR findings of bronchiolitis
Flattening, imperfect dome diaphragm
Widening intercostal spaces
Hyperlucency
Drugs to be given in bronchiolitis
Ribavirin
Corticosteroids
Bronchiodilators
Is antibiotic recommended in bronchiolitis?
NO, negative bacterial etiology