19 results
Patterns of pulmonary dysfunction revealed by flow-volume loops. For comparison, a normal loop is shown with
by flow-volume loops ... comparison, a normal loop ... #Diagnosis #PFTs ... #Spirometry #FlowVolume ... #Loops #Patterns
Spirometry - PFT Interpretation Algorithm

- BWH Medicine Chiefs @BrighamChiefs

#Spirometry #PFTs #Interpretation #Algorithm #diagnosis #differential #pulmonary #function
Spirometry - PFT ... Interpretation Algorithm ... #PFTs #Interpretation ... #Algorithm #diagnosis ... differential #pulmonary #function
Flow Volume Loops - Common Patterns
A. Normal
B. Emphysema
C. Unilateral Main Stem Bronchial Obstruction
D. Fixed Upper Airway
Flow Volume Loops ... #Diagnosis #PFTs ... #Spirometry #FlowVolume ... #Loops #Patterns
Pulmonary Function Testing: Flow Volume Loop Patterns
 • Variable extra-thoracic obstruction - truncated or flattened inspiratory
Pulmonary Function ... Testing: Flow Volume Loop ... nickmmark #FlowVolume ... #Loops #pulmonary ... #PFTs #patterns
Pulmonary Function Test (PFT) Interpretation Algorithm

Approach to PFTs:
1) Look at Flow-Volume Loop if available
2) FEV1/FVC <
Pulmonary Function ... Algorithm Approach ... at Flow-Volume Loop ... #Pulmonary #Function ... #Algorithm #diagnosis
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
Urine chloride < 20 mmol/l - Chloride responsive (Chloride
Causes of Metabolic ... Differential Diagnosis Algorithm ... Urine chloride ... Vomiting • NG suction ... diuretic use Urine
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Causes of Hypomagnesemia ... Differential Diagnosis Algorithm ... 2-2.5% or 24h Urine ... 2-2.5% or 24h Urine ... Mg > 10g • Loop
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
of magnesium = (urine ... serum magnesium x urine ... loss if renal function ... Hypomagnesemia #algorithm ... differential #diagnosis #causes
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Differential Diagnosis Algorithm ... hyperaldosteronism • Low Urine ... Vomiting, NGT suction ... (late) • High Urine ... #Nephrology #Causes
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
Urinary Chloride Algorithm ... Remote use of loop ... Vomiting/nasogastric suction ... the indicated causes ... #Algorithm #nephrology