What is hypercapnia?
Inadequate alveolar ventilation, increased CO2 production
Pattern:
Tachypnea/tachycardia, cyanosis, AMS
hypoxemia
Pattern:
Agitation, confusion, flushing, tachycardia, headache
hypercapnia
Pattern:
Very low pH, very high CO2, mildly high bicarbonate
acute respiratory acidosis
Pattern: Low pH, very high CO2, very high bicarbonate
chronic respiratory acidosis
Pattern: Very high pH, very low CO2, mildly low bicarbonate
acute respiratory alkalosis
Pattern: High pH, very low CO2, very low bicarbonate
chronic respiratory alkalosis
Pattern: very low pH, very low CO2, very low bicarbonate
metabolic acidosis
Pattern: very high pH, mildly high CO2, very high bicarbonate
metabolic alkalosis
Pattern: recurrent infections, left sided mass in lower lobe, mucoid impaction surrounded by hyperinflated lung
Pulmonary sequestration
What is congenital adenomatoid malformation? How does it appear on CT?
overgrowth of pulmonary tissue in region of end bronchioles. presents as respiratory symptoms due to compression or infection. Translucent round lesions on chest xray
What is a bronchogenic cyst?
foregut cysts with closed epithelium lined saces containing hyaline cartilage plates, most common cysts of infancy, filled with fluid or mucus that may become infected
Pattern:
bronchial destruction, bronchial dilation, accumulation of infected secretions
Bronchiectasis from problems such as primary ciliary dyskinesia
Pattern: bronchiectasis, sinusitis, situs inversus
Kartagener’s syndrome
3 genes associated with primary ciliary dyskinesia
DNA11, DNA H5, DNA H 11
Pattern: chronic production cough, chronic nasal congstion with mucopurulent drainage without seasonal variation, chronic otitis media, sinusitis, nasal polyposis, wheeze, recurrent penumonia, bronchiectasis, respiratory distress in term neonates, male inferitility, hdyrocephalus, situs inversis
Primary ciliar dyskinesia
What is acute respiratory distress syndrome?
Acute inflammatory lung injury resulting in widespread pulmonary edema as a result of increased alveolar capillary permeability and epithelial destruction
Pattern: catastrophic pulmonary or nonpulmonary event, increased shunt fraction (hypoxemia), decreased lung compliance, diffuse pulmonary infiltrates, exclusion of left heart disease
ARDS
Pattern: refractory hypoxemia, tachypnea, increased work of breathing, respiratory muscle fatigue, protein rich pulmonary edema fluid
ARDS
Pattern: drooling, dysphagia, dysphonia, distress, deafening
epiglottitis
Steeple sign on CXR
croup
Thumb print on CXR
epiglottitis
Pathogen for viral croup
parainfluenza 1, 3
Pathogen for bacterial tracheitis
staph aureus
strept
moraxella catarrhalis