pft interpertation Flashcards
patient diagnosis
pulmonary function test is one small piece of the puzzle that enable a physician to accurately diagnose pulmonary disease
thorough patient history
thorough patient history may take 45 minute to one hour when physician will proceed from the head to toe examination
physical exam
can take from 10 to 30 min depending what is physician looking for and physical exam can narrow to 1 to 2 possible potential problems
Pathology of restrictive disease
these disease cause changes in compliance, reducing the lung compliance or stiffness
theses diseases may also reduce the ability of the lung to fill mechanically
thoracic disease: structural
scoliosis kyphosis kyphoscoliosis pectus caranatum bone disease pneumothorax
thorac disease: neuromuscular
gullain-barre myasthenia gravis polio multiple sclerosis muscular dystrophy
intrathoracic disease
consolidation
pneumoconiosis: silicosis
asbestosis
berylliosis
abdominal disorders
pain binder/clothing obesity pregancy ascites(peritoneal fluid accumulation)
obstructive lung diseas
patient gets the air in but can’t get it out
emphysema
destruction of alveolar septal wall
destruction of pulmonary capillaries
air trapping
increase compliance
bronchitis
inflammation of the peripheral airway
excessive mucous production
bronchial obstruction
hyperinflation
asthma
inflammation of small airway
incrase mucous production
bronchial muscle constriction
hyperinflation
bronchiectasis
dilation of bronchial airway
excessive mucous production
hyperinflation
atelectasis and parechymal fibrosis
restrictive lung disease volume
tlc is dec vc is dec frc is dec rv is dec rv/tlc% is normal
flow rates with restrictive
Fvc is decr
fev1 is decr
fev1/fvc% is normal or increase
volumes in obstructive disease
tlc normal and in hyperinflation is incres
vc is decr and with hyperinflation is normal
frc is incr
rv is incr
rv/tlc% is incres
flow rates with obstructive
fvc is normal or decreased
fev1 is normal or decreased
fev1/fvc% is decreased
fef25-75 decreased
mixed restrictive and obstructive volumes
serial testing is useful
watch for TLC to increase and then decrease
mixed restrictive and obstructive flows
fvc is decreased fev1 is decreased fev1/fvc is decreased TLC is decreased rv/tlc is increased
