6 results
Flow Volume Loops - Common Patterns
A. Normal
B. Emphysema
C. Unilateral Main Stem Bronchial Obstruction
D. Fixed Upper Airway
Flow Volume Loops ... Normal B. ... Restrictive Parenchymal ... Diagnosis #PFTs #Spirometry ... #FlowVolume #Loops
Patterns of pulmonary dysfunction revealed by flow-volume loops. For comparison, a normal loop is shown with
by flow-volume loops ... comparison, a normal ... Diagnosis #PFTs #Spirometry ... #FlowVolume #Loops ... Patterns #Comparison #Normal
Forced vital capacity (FVC) curves comparing normal, obstructive, and restrictive disorders. Curves are as they appear
curves comparing normal ... , obstructive, and ... restrictive disorders ... commonly available spirometers ... #Restrictive #Normal
Pulmonary Function Testing: Flow Volume Loop Patterns
 • Variable extra-thoracic obstruction - truncated or flattened inspiratory
Testing: Flow Volume Loop ... extra-thoracic obstruction ... reduced FEV1 • Restriction ... nickmmark #FlowVolume ... #Loops #pulmonary
Pulse Abnormalities - Differential Diagnosis Algorithm
Unequal/DeIayed:
 • Obstructive arterial disease (ie. Atherosclerosis)
 • Aortic dissection
 •
Differential Diagnosis Algorithm ... Unequal/DeIayed: • Obstructive ... Takayasu disease • Normal ... Pericarditis • Restrictive ... Differential #Diagnosis #Algorithm
Pulmonary Function Test (PFT) Interpretation Algorithm

Approach to PFTs:
1) Look at Flow-Volume Loop if available
2) FEV1/FVC <
Interpretation Algorithm ... at Flow-Volume Loop ... FEV1/FVC < 70% (obstruction ... (restrictive component ... (confirm restrictive