Robbins Ch 15 Part I Flashcards
What do the rounded type II pneumocytes produce?
Surfactant
Why type of pulmonary hypoplasia is characterized by reduced space in the thoracic cavity?
Which is characterized by the impaired ability to inhale and can be caused by renal agenesis?
1) Diaphragmatic hernia
2) Oligohydramnios
What are the most common foregut cysts?
Bronchogenic
Pulmonary sequestration is characterized as lung tissue that has abnormal vascular supply arising from?
The aorta or its branches
Which type of pulmonary sequestration has its own pleura?
Which does not?
1) Extralobar sequestration
2) Intralobar sequestration
How does extralobar sequestration generally come to attention?
Mass lesions in infants
When is neonatal respiratory distress syndrome more commonly seen?
1) Males
2) Maternal diabetes
3) Delivery by C-section
What is the cause of neonatal respiratory distress syndrome?
Lack of surfactant
What are the surfactant proteins that can be measured with amniocentesis?
SP-B, SP-C, and surfactant lipids
Increased glucose levels in the mother has what effect on the fetus?
What does this lead to?
1) Increased insulin levels
2) Inhibits the synthesis of surfactant
What complication is noted from high concentration of ventilator administered oxygen for prolonged periods for infants with RDS?
Retrolental fibroplasia
Which form of atelectasis is characterized by complete airway obstruction?
Which is characterized by pleural effusion?
Which is characterized by fibrosis?
1) Resorption
2) Compressive
3) Contraction
Which direction does the mediastinum shift towards with Resorption Atelectasis?
Why?
1) Towards affected lung
2) Lung volume is diminished
Compressive atelectasis can occur due to?
Which direction does the mediastinum shift towards?
1) Pneumothorax
2) Away from affected lung
Hemodynamic pulmonary edema is due to?
Increased hydrostatic pressure often form left sided heart failure
What is a manifestation of Severe Acute Lung Injury (ALI) or Diffuse Alveolar Damage (DAD)?
Acute respiratory distress syndrome (ARDS)
What are damaged with ALI/ARDS?
This leads to the formation of?
1) Type II pneumocytes
2) Hyaline membranes
How does ALI/ARDS present clinically?
Dyspnea and tachypnea
What is the Tx of ALI/ARDS?
Mechanical ventilation while treating the underlying cause
Obstructive lung disease will have a FEV1/FVC of?
What about restrictive lung disease?
1) FEV1/FVC < 0.8
2) FEV1/FVC is normal
Emphysema is the irreversible enlargement of airspaces distal to?
What is the etiology?
1) Terminal bronchioles
2) Tobacco