Aging on the Pulmonary System Flashcards
1
Q
Changes in Chest Wall
A
- decr ROM of costovertebral joints
- loss of proteoglycans and H20 in discs
- decr height of discs
- incr kyphosis
- incr work of breathing
2
Q
____ closing volume
A
-increased
increased residual volume cause airways to collapse
3
Q
Increased closing volume causes:
A
-vent/perfusion mismatching b/c air distributed unevenly
4
Q
pulmonary system is often the limitation to _____ in older pts
A
-exercise
5
Q
changes in lung parenchyma
A
- decreased:
- -# of radially arranged elastic fibers in small airways->collapsing
- -forced vital capacity
- -forced expiratory volume
- -forced expiratory flow
- -FEF
6
Q
_____ elastic recoil
A
-decreased
7
Q
decreased elastic recoil causes:
A
-increased residual volume
8
Q
Closing Volume
A
-volume of lung at which dependent airways begin to close during expiration
9
Q
changes in pulmonary vasculature
A
-decr # of pulmonary capillaries leading to decr diffusion capacity
10
Q
decreased surface area leads to:
A
decr diffusing capacity
11
Q
changes in respiratory Mm
A
Decreased:
- # type I and II fibers
- # motor units
- capability of neuromuscular junction to transmit impulses
- diaphragm strength & endurance
12
Q
decrease strength and endurance of diaphragm causes:
A
-increased use of accessory Mm
