Three alveolar types, showing the continuum of ventilation/perfusion ratios.

Generate an alveolar PO2-PCO2 diagram that identifies the.

Physiologically achieved in gravity fields operating on fluids (air/blood)

Explain how ventilation/perfusion matching is.

Describe the importance of ventilation/perfusion matchingĪt the alveolar level in maintaining proper levels of systemic arterial.

congenital tracheobronchomegaly (a.k.a.Learning Objectives: You should be able to:.

allergic bronchopulmonary aspergillosis.

obliteration of the retrosternal airspace.

deviation of the azygo-esophageal recess.

posterior tracheal stripe/tracheo-esophageal stripe.

normal chest x-ray appearance of the diaphragm.

neonatal chest x-ray in the exam setting.

pediatric chest x-ray in the exam setting.

osteophyte induced adjacent pulmonary atelectasis and fibrosis.

chronic bilateral airspace opacification (differential).

chronic unilateral airspace opacification (differential).

acute airspace opacification with lymphadenopathy (differential).

acute bilateral airspace opacification (differential).

acute unilateral airspace opacification (differential).

differential diagnoses of airspace opacification.

differential of left paramediastinal catheter positions.

peripherally inserted central catheters.

evaluation of endotracheal tube position.evaluation of nasogastric tube position.

allergic bronchopulmonary aspergillosis (ABPA).The upper portion of the lungs have a positive ventilation mismatch when compared to the bases, where there is preferential perfusion. Common conditions involving the apical zone include: The apices and upper zones are preferentially affected by pathology that is related to inhalation. using the zonal terminology for the location of findings on CT is generally discouraged, as a more precise lobar +/- segmental site, can usually be provided.portion of the lungs that lie above the inferior margin of the clavicles on a frontal chest radiograph (see Figure 1) 2.It is sometimes thought of as a subdivision of the upper zone. lung apex) is one of the four chest radiograph zones and an important location for missed diagnoses when reporting a frontal chest radiograph and makes up one of the ' review areas'.

In the apex of the lung dead space