QuestionSBA
QuestionChoice
Ventilation/perfusion (V/Q) mismatch does occur in PE, however this is not the name given to the dead space where the mismatch occurs.
10001630
d
V/Q mismatch
QuestionChoice
Anatomical dead space is the volume of air that is in the conducting zone of the lung
10001628
b
Anatomical dead space
QuestionChoice
Alveolar dead space is the volume of air that fills the gas-exchanging regions of the lung but does not participate in gas exchange. A number of factors can contribute to elevations in pulmonary dead space, including excessive PEEP (intrinsic or extrinsic), low cardiac stroke volume, hypovolemia, and pulmonary embolism.
10001627
a
Alveolar dead space
QuestionChoice
Physiological dead space is the combination of anatomical dead space plus alveolar dead space.
10001629
c
Physiological dead space
QuestionChoice
Mechanical dead space is dead space in an external breathing apparatus in which the breathing gas must flow in both directions as the user breathes in and out. It increases the necessary respiratory effort to get the same amount of usable air or breathing gas, and risks accumulation of carbon dioxide from shallow breaths.
10001631
e
Mechanical dead space
Concept
Chapter
2693
3951
Pulmonary embolism
Topic
150
Respiratory physiology
12872
A patient presents to ED with pain in her chest and haemoptysis. She is diagnosed with a pulmonary embolism (PE) following a CTPA. The consultant mentions that her left lung had no perfusion and subsequently no gas exchange.

What is the name given to the space to which he is referring?
a