pulmonary Flashcards
(28 cards)
What are the 5 parts of the lower respiratory tract?
larynx trachea bronchus bronchioles alveoli
What regulates automatic respiration?
brainstem
what affects voluntary ventiliation?
cerebral cortex
Gu qi + Zong qi = ??
Zhen qi
what are the four primary volumes that make up total lung capacity
Tidal Volume (TV)
Inspiratory Reserve Volume (IRV)
Expiratory Reserve Volume (ERV)
Residual Volume (RV)
Define Tidal Volume.
Under resting conditions, 500 mls of air enter and leave the lungs w/each breath
Define Inspiratory Reserve Volume?
3100 mls. After a normal quiet inspiration, a person inspires as much air as possible. The volume above tidal volume = IRV
Define Expiratory Reserve Volume?
1200 mls - after a nomal expiration, a person can force out approx. 1 liter of air.
Define Residual Volume
1200 mls. The volume of air remaining after a forced expiration is the residual volume
Define Inspiratory capacity
Inspiratory reserve volume + tidal volume. 3600 ml
Define functional residual capacity
Residual volume + Expiratory reserve volume - 2400 ml
define vital capacity
tidal volume + inspiratory + expieratory reserve volumes - 4800 mls
define total lung capacity
vital capacity + residual volume - 6000 ml
define spirometry
measures the amount and rate of air a person breathes in order to diagnose illness or determine progress in treatment
what is FEV 1
forced expiratory volume in 1 second - the volume of air that is forcefully exhaled in one second
What is obstructive disease pattern?
an obstructive disorder refers to any disease that affects the lumen of the airways
Name two obstructive disorders
asthma and chronic bronchitis
define asthma
a chronic inflammatory disease of the airways that is characterized by episodes of cough, wheezing and dyspnea
What are the 3 significant physiological changes with asthma?
bronchoconstriction
inflammation/edema
increased mucus production
Define air trapping
increased smooth muscle tone during an asthma attack means the airways close @ abnormally high lung volumes, trapping air behind occluded or narrowed small airways. Therefore one breathes at the top of ones lung capacity over a mass of stagnant air that can’t be exhaled.
What 2 conditions is barrel chest associated?
Emphysema and lung hyperinflation
What produces mucus with asthma?
Goblet cells and submucosal glands
What do you do when a spirometry test is negative but asthma is suspected?
Methacholine Challenge = a positive test = FEV 1 of at least 20% at exposure to a dose of 16 mg/ml or less.
Define Peak expiratory flow
a handheld device designed as a home monitoring tool used to base treatment decisions