Aging on the Pulmonary System Flashcards Preview

Cardio Pulm > Aging on the Pulmonary System > Flashcards

Flashcards in Aging on the Pulmonary System Deck (12):
1

Changes in Chest Wall

-decr ROM of costovertebral joints
-loss of proteoglycans and H20 in discs
-decr height of discs
-incr kyphosis
-incr work of breathing

2

____ closing volume

-increased

(increased residual volume cause airways to collapse)

3

Increased closing volume causes:

-vent/perfusion mismatching b/c air distributed unevenly

4

pulmonary system is often the limitation to _____ in older pts

-exercise

5

changes in lung parenchyma

-decreased:
--# of radially arranged elastic fibers in small airways->collapsing
--forced vital capacity
--forced expiratory volume
--forced expiratory flow
--FEF

6

_____ elastic recoil

-decreased

7

decreased elastic recoil causes:

-increased residual volume

8

Closing Volume

-volume of lung at which dependent airways begin to close during expiration

9

changes in pulmonary vasculature

-decr # of pulmonary capillaries leading to decr diffusion capacity

10

decreased surface area leads to:

decr diffusing capacity

11

changes in respiratory Mm

Decreased:
-# type I and II fibers
-# motor units
-capability of neuromuscular junction to transmit impulses
-diaphragm strength & endurance

12

decrease strength and endurance of diaphragm causes:

-increased use of accessory Mm