12 results
Forced vital capacity (FVC) curves comparing normal, obstructive, and restrictive disorders. Curves are as they appear
Forced vital capacity ... normal, obstructive ... #Diagnosis #Pulmonary ... #Spirometry #FVC ... #Restrictive #Normal
Patterns of pulmonary dysfunction revealed by flow-volume loops. For comparison, a normal loop is shown with
Patterns of pulmonary ... comparison, a normal ... Diagnosis #PFTs #Spirometry ... #FlowVolume #Loops ... Patterns #Comparison #Normal
Asthma vs COPD Presentation and Diagnosis
Asthma:
 • Epidemiology: Age usually < 45, History (personal or family)
Exam: Usually normal ... Findings: Variably abnormal ... often normal or ... near normal between ... : Persistently abnormal
Flow Volume Loops - Common Patterns
A. Normal
B. Emphysema
C. Unilateral Main Stem Bronchial Obstruction
D. Fixed Upper Airway
Normal B. ... Diagnosis #PFTs #Spirometry ... #FlowVolume #Loops ... #Patterns #pulmonary
Asthma
Chronic lung disease characterized by airway inflammation, airway and variable expiratory air flow obstruction
There are 2
lower • FEV1 / FVC ... lower limit of normal ... Reversibility on spirometry ... greater in FEV or FVC ... Asthma #diagnosis #pulmonary
Lung Volumes and Capacities

The amount of air that moves in and out of the lungs during
expiration of a normal ... The functional residual ... capacity (FRC) ... expiration of a normal ... #Pulmonary
Consensus diagnostic criteria for asthma-COPD overlap syndrome (ACOS) in patients with airflow limitation. COPD=chronic obstructive pulmonary
chronic obstructive pulmonary ... volume in 1 s; FVC ... =forced vital capacity ... lower limit of normal
Pulmonary Function Tests (PFTs) - Interpretation Algorithm
 • Normal
 • Pulmonary Hypertension, Anemia, Carboxyhemoglobinemia
 • Chest
Pulmonary Function ... Interpretation Algorithm ... • Normal • ... Pulmonary Hypertension ... Interpretation #Algorithm
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Differential Diagnosis Algorithm ... A-a Gradient Normal ... • ↓Diffusion Capacity ... Differential #Diagnosis #Algorithm ... #pulmonary #Aa
Abnormal liver function tests algorithm.
 This figure details the initial response to abnormal liver blood tests.
Abnormal liver function ... tests algorithm ... initial response to abnormal ... *Abnormal USS may ... #LFTs #Abnormal