Pulmonary I Flashcards
Factors involved in maintaining adequate respiration
- Adequate intake of air
- Rapid diffusion along alveolar ducts through alveolar walls
- Adequate perfusion of pulmonary vasculature
Type 1 pneumocyte
A
Type 2 pneumocyte
Produces surfactant
Most common type of tracheal-esophageal fistula?
Type C
Atresia
Broken off connection of a hollow viscous
Neonatal respiratory distress syndrome- primary defect?
Lack of surfactant and lungs won’t open
Surfactant deficiency disorder
Hyaline membrane disease of newborn
Surfactant deficiency disorder
- Alveoli don’t open because they were born before type 2 pneumocytes started producing surfactant
- membranes form as result of loss of surfactant… This is found in many conditions, not just this condition which is a congenital deficiency in premature babes
Surfactant deficiency disorder tx?
Steroids
Atalectasis
Finding of a disease process:
Something compresses the lung and no air flow-lung cannot expand
Secretions happen
Bacteria collects there-pneumonia
Acinus
Fxnal unit of the lung consisting of the respiratory bronchiole and associated alveolar ducts and alveoli
4 main pathologic mechanisms of pulmonary edema
- Increased venous pressure
- Increased oncotic pressure
- Lymphatic obstruction
- Alveolar injury