315 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... Atelectasis Central Hypoventilation ... • Obesity Hypoventilation ... Abnormalities #Hypoxemia ... #Hypoxia #Differential
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Atmospheric pressure • Hypoventilation ... MatthewHoMD #Hypoxemia ... #Hypoxia #Differential
CAPNOGRAPHY 
Provides a measure of ventilation – or concentration of CO2 exhaled air (aka end tidal
Apnea or hypoventilation ... oxygen deficiency (hypoxia ... detect Apnea or hypoventilation ... #curarecleft #hypoventilation ... #hyperventilation
Echocardiogram and POCUS Cardiology Windows and Anatomy
 • Parasternal Long Axis (PLAX)
 • Subcostal 4 Chamber
Echocardiogram and POCUS ... Subcostal 4 Chamber (S4C ... Apical 4 Chamber (A4C ... Apical 2 Chamber (A2C ... Echocardiogram #POCUS
Acute Hypoxemia - Differential Diagnosis
 • Hyperacute: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
Acute Hypoxemia ... Hemorrhage • Hypoventilation ... Sophia_Hayes_MD #Hypoxemia ... #hypoxia #Differential
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Hypoxemic Respiratory ... Mount Everest) HYPOVENTILATION ... sedatives, obesity-hypoventilation ... common cause of hypoxemic ... direction leads to hypoxemia
Medications for High-Altitude Sickness 
Acetazolarnide 
 • Carbonic Anydrase Inhibitor Bicarb diuresis & metabolic Acidosis ->
> compensatory hyperventilation ... • Improves hypoxemia ... • Improves hypoxemia
Hypoxemia / Hypoxia - Rapid Response Management Algorithm

Stridor - Upper airway pathology:
 • Anaphylaxis
 • Foreign
Hypoxemia / Hypoxia ... shallow breathing - Hypoventilation ... Sophia_Hayes_MD #Hypoxemia ... #Hypoxia #differential
POCUS Echocardiography - Table of Cardiac Views and Windows
 • Parastemal Long-Axis View (PLAX)
 • Parasternal
POCUS Echocardiography ... -Chamber View (A4C ... -Chamber View (A5C ... -Chamber View (A2C ... Doppler #Anatomy #POCUS
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Gradient • Alveolar Hypoventilation ... Center, Obesity Hypoventilation ... arterial #pulmonary #Hypoxia ... #hypoxemia #differential