Concept explainers
To review:
The given blank space in the statement, “The paradox in this case was that even though the patient’s PAO2 and Pao increased in response to the increased ventilation-perfusion ratio, the actual amount of oxygen being transported (________ decreased;__________ increased;_______ remained the same) because of the (__________ increased; ________ decreased) blood flow”.
Introduction:
The relationship between the amount of ventilation and the pulmonary capillary blood flow is known as the ventilation-perfusion ratio. Ideally, the lungs need to receive the same amount of capillary blood and ventilation. The overall ventilation-perfusion ratio is 0.8. The ratio depends on the ventilation and perfusion, and not just on the partial pressure of oxygen.
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Cardiopulmonary Anatomy & Physiology
- Case 2 As a result of the hyperinflation, the patient's work of breathing increased because her lungs were inflated to the very top of their pressure- volume curve. As the pressure-volume curve illustrates, lung compliance is very (high __________; low_______) on the upper, flat portion of the pressure-volume curve.arrow_forwardCase 2 1. This patient demonstrated both obstructive and restrictive lung disorders. During the first part of the case, which pulmonary function studies verified that the patient had an obstructive pulmonary disorder? _______________________ ________________________arrow_forwardIf an individual fully inhales to a total lung capacity of 4.5 L at sea level (760 mm Hg) and dives to a depth of 66 feet, the lungs will be compressed to about A. 1.0 L B. 1.5 L C. 2.0 L D. 2.5 Larrow_forward
- Which of the following forced expiratory measurements reflects the status of medium-sized to small-sized airways? A. FEF200-1200 B. PEFR C. MVV D. FEF25%-75%arrow_forwardAt sea level, the alveolar water vapor pressure in normally about A. 0.2 mm Hg B. 47 mm Hg C. 0.0 mm Hg D. 40 mm Hgarrow_forwardCase 2 The patient's fatigue and respiratory rate of 6 breaths/min further caused the ventilation- perfusion ratio to (______rise;________ fall).arrow_forward
- Case 1 When the patient was in the emergency department what pulmonary function measurement served as an important clinical indicator of the severity of the patient's asthma attack?arrow_forwardSuppression of the peripheral chemoreceptors begins when the Po2 falls below A. 50 mm Hg B. 40 mm Hg C. 30 mm Hg D. 20 mm Hgarrow_forwardCase 1 As a result of the severe left heart failure and increased pulmonary blood pressure in the case, fluid moved out of the pulmonary capillaries and into the extracapillary spaces. The pathologic process caused the thickness of the alveolar-capillary membrane to______arrow_forward
- Cardiopulmonary Anatomy & PhysiologyBiologyISBN:9781337794909Author:Des Jardins, Terry.Publisher:Cengage Learning,Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning