11 results
Spirometry - PFT Interpretation Algorithm

- BWH Medicine Chiefs @BrighamChiefs

#Spirometry #PFTs #Interpretation #Algorithm #diagnosis #differential #pulmonary #function
Spirometry - PFT ... Interpretation ... Algorithm - BWH ... #differential # ... pulmonary #function
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
= (urine magnesium ... loss if renal function ... Hypomagnesemia #algorithm ... #differential # ... #low
Hypocalcemia Workup - Differential Diagnosis Algorithm
 • Low Magnesium, High Magnesium - Functional Hypoparathyroidism
 • High
Hypocalcemia Workup - Differential ... Diagnosis Algorithm ... • Low Magnesium ... , High Magnesium ... - Functional Hypoparathyroidism
Causes of Hypomagnesemia - Differential Diagnosis Algorithm
GI LOSS - FeMg < 2-2.5% or 24h Urine Mg
Hypomagnesemia - Differential ... Diagnosis Algorithm ... Urine Mg > 10g • Loop ... Hypomagnesemia #Magnesium ... #Low #Causes #Differential
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
GI Losses - Gastric
 • Vomiting
 • NG suction
GI
Metabolic Alkalosis - Differential ... Diagnosis Algorithm ... Vomiting • NG suction ... • Diuretics (loop ... #Diagnosis #Algorithm
Pulmonary Function Test (PFT) Interpretation Algorithm

Approach to PFTs:
1) Look at Flow-Volume Loop if available
2) FEV1/FVC <
Pulmonary Function ... Test (PFT) Interpretation ... Algorithm Approach ... PFTs: 1) Look at Flow-Volume ... Loop if available
Causes of Hypotonic Infant (Floppy Newborn) - Differential Diagnosis Algorithm
Central Nervous System - Decreased LOC, Axial
Floppy Newborn) - Differential ... Diagnosis Algorithm ... System - Decreased LOC ... Neuromuscular Junction ... Botulism • Magnesium
Metabolic Alkalosis - Differential Diagnosis Algorithm - Urinary Chloride
 • Cl- responsive metabolic alkalosis
Metabolic Alkalosis - Differential ... Diagnosis Algorithm ... Remote use of loop ... Vomiting/nasogastric suction ... - Normal/low
Causes of Hypokalemia - Differential Diagnosis Algorithm
Decreased intake (rare cause in isolation)
GI loss - Urine loss
Hypokalemia - Differential ... Diagnosis Algorithm ... Vomiting • NG suction ... contracted • Loop ... Gittelman's syndrome • Magnesium
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
loss: Nasogastric suction ... disease • Drugs: Loop ... Hypomagnesemia #Causes #differential ... diagnosis #nephrology #magnesium ... #low