Pulmonary function tests

Question 1

Restrictive disorders

Answer 1

Disorders that RESTRICT the ability for the lungs to fill

Extra-airway diseases

Question 2

Obstructive disorders

Answer 2

Disorders associated with OBSTRUCTED airflow

Question 3

volume time curves

fvc

Answer 3

FVC: forced vital capacity

highest part/plateua

Question 4

FEV1

Answer 4

FEV1: Forced expired volume in 1 sec

Question 5

fvc restrcitive/obstructive

Answer 5

restrictive- most air leaves lung in first second- sharper increase

obstructive- much shallower

Question 6

fev1/fvc normal

Answer 6

70+

Question 7

restrictive

Answer 7

90/100

Question 8

obstructive

Answer 8

lower than 70 (could even be 40)

Question 9

what do mild obstructive diseases flow loops

Answer 9

coving
flow rate similar
reduced fvc

Question 10

severe ostructive disease

Answer 10

Reduced FVC
Indented exhalation curve
Reduced PEFR
much smaller in all directions

Question 11

restrictive flow loops

Answer 11

Reduced FVC

Narrower curve

Question 12

what are the 2 types of obstructive diseases

Answer 12

extrathroacic

intrathoracic

Question 13

VARIABLE EXTRATHORACIC OBSTRUCTION

Answer 13

inspiration if perfect

expiration is blunted

Question 14

VARIABLE INTRATHORACIC OBSTRUCTION

Answer 14

inspiration is perfect

expiration is blunted

Question 15

FIXED AIRWAY OBSTRUCTION

Answer 15

blunted expiration and inspiration

Question 16

Lung volumes most easily measured accurately when

Answer 16

stood up rather than sitting

Question 17

what is PEFR

Answer 17

peak expiratory flow rate

Question 18

what is PEFR in a spirometery

Answer 18

gradienyt of steepest portion

Question 19

flow loop PEFR

Answer 19

highest upper portion

Question 20

disadvantage os spiromterey

Answer 20

heavy reliance on technique and can be very uncomfortable