Exam 2: Ventilation

Which of the following can cause pulmonary emboli? I.Prolonged inactivity II.Pregnancy and childbirth III.Obesity IV.Hypercoagulation disorders

What is the term for the molecular cohesive force at a liquid-gas interface?

Which of the following can cause pulmonary surfactant deficiency? I.Pulmonary embolism II.Pulmonary edema III.Atelectasis IV.ARDS

What is the treatment of choice for the early stages of RDS in premature infants?

What is the general term for the force required to move gas or fluid through a tube or vessel?

Which flow pattern occurs in airways at low flow rates and low pressure-gradients?

When Poiseuille's law is rearranged for flow with pressure remaining constant,what impact would reducing the radius of a tube by 50% have on the gas flow?

What does frequency multiplied by (VT-VD)equal?

In which breathing pattern is an individual only able to breathe comfortably in the upright position?

How does air trapping and hyperinflation of the lungs affect lung compliance?

Which clinical measurement is used to evaluate the elastic forces of the lungs?

In a healthy adult at rest,what portion of the total energy output is required for the work of breathing?

What term is defined as "the change in volume of the lungs divided by the change in transpulmonary pressure during the time required for one breath'?

If an individual generates a flow rate of 4 L/sec by generating a transrespiratory pressure of 6 cm H20,what would Raw equal?

What is the term for the volume of gas that is typically measured during exhalation of one quiet breath?

How do obstructive lung diseases that cause air trapping affect lung compliance?

What does the sum of anatomic deadspace and alveolar deadspace equal?

At sea level,what would the alveolar pressure at end-expiration equal?

How does the breathing pattern change when a patient with COPD develops a secondary restrictive lung condition such as pneumonia?

When lung compliance is reduced by half,how will time constants be affected?