177 results
Asthma
Chronic lung disease characterized by airway inflammation, airway and variable expiratory air flow obstruction
There are 2
obstruction: • FEV1 ... 0.70 or lower • FEV1 ... Reversibility on spirometry ... • Increase of FEV1 ... or greater in FEV
Spirometry - PFT Interpretation Algorithm

- BWH Medicine Chiefs @BrighamChiefs

#Spirometry #PFTs #Interpretation #Algorithm #diagnosis #differential #pulmonary #function
Spirometry - PFT ... BrighamChiefs #Spirometry ... differential #pulmonary #function
Asthma vs COPD Presentation and Diagnosis
Asthma:
 • Epidemiology: Age usually < 45, History (personal or family)
Variably abnormal spirometry ... - FEV1/FVC < 70% ... bronchodilator, Spirometry ... Persistently abnormal spirometry ... - FEV1/FVC < 70%
Classic (2009) Spirometric GOLD Classification of COPD Severity Based on Postbronchodilator FEV
#Diagnosis #Pulmonary #COPD #GOLD #Staging
Classic (2009) Spirometric ... Postbronchodilator FEV ... Classification #FEV1
Pulmonary Function Testing: Flow Volume Loop Patterns
 • Variable extra-thoracic obstruction - truncated or flattened inspiratory
Pulmonary Function ... and persevered FEV1 ... flow with reduced FEV1
Oropharyngeal and Esophageal Causes of Dysphagia - Differential Diagnosis
Oropharyngeal Dysphagia
 • Neuromuscular causes: CVA/CNS tumor/ALS, Parkinson's,
and Esophageal Causes ... Neuromuscular causes ... Non-relaxation of EG junction ... Achalasia, EG junction ... sclerosis - Functional
Causes of Hyperkalemia

Hyperkalemia is caused by excess potassium intake, impaired potassium excretion, or transcellular shifts. The
Causes of Hyperkalemia ... Hyperkalemia is caused ... impaired renal function ... rarely the sole cause ... #Differential #Causes
Approach to Nausea / Vomiting - Differential Diagnosis Framework
 • Gastrointestinal 
    -
Approach to Nausea ... Disorders • Other Causes ... Genitourinary • Functional ... /AnthonyXuMD #Nausea
Hypochloremia - Differential Diagnosis Algorithm

Cause - Decreased Intake:
 • Low salt in diet
 • Exclusive D5W
Diagnosis Algorithm Cause ... intoxication Cause ... transport, renal function ... Gastrointestinal function ... ⁻ increase may cause
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
for intracranial masses ... a mass as the cause ... Dislocation • Functional ... Neuromuscular Junction ... Diagnosis #Algorithm #Causes