53 results
#oxygen #deliver #mask #hospital #nasal #cannula #venturi #mask #face #nonrebreather #o2
nonrebreather #o2
Low O2 saturation that does not respond to supplemental O2
- Key diagnostic feature (sat < 85%
Low O2 saturation ... to supplemental O2 ... a falsely low O2 ... true decrease in O2 ... impairment of O2
Hypoxemia vs Hypoxia
Hypoxemia - Partial pressure of arterial oxygen (PaO2) is below normal
Hypoxia - Insufficient oxygen
hypoxia - Increased O2 ... unable to use O2 ... O2 delivery to tissues
Causes of Generalized Hypoxia - Differential Diagnosis
 • Hypoxemic - Not enough O2 (Most Common)
 •
Hypoxemic - Not enough O2 ... Cells can't use O2
Oxygen-Hemoglobin Dissociation Curve

Left Shift (↓ O2 unloading to tissue), Left = Lower:
 • ↓ H+ (↑
Left Shift (↓ O2 ... Right Shift (↑O2
Medications for High-Altitude Sickness 
Acetazolarnide 
 • Carbonic Anydrase Inhibitor Bicarb diuresis & metabolic Acidosis ->
Anti-emetic O2 ... pressure Hyperbaric O2
Lactic Acidosis - Overview and Pathophysiology
Lactic acid is an endogenous substrate for gluconeogenesis, that is constantly
TYPE A: Impaired O2 ... ) • Decreased O2 ... Delivery • Increased O2 ... TYPE B: Impaired O2
Normal Intracardiac Pressures and O2 Saturations by Chamber

#Normal #Intracardiac #Pressures #Saturations #Chamber #Cardiology #Diagnosis #Laboratory #Wedge
Pressures and O2
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Erythropoietin, O2 ... Secreting Tumor - O2 ... Affinity Hemoglobin - O2
Factors that May Affect Fetal Oxygenation - Differential Diagnosis Algorithm

Excessive Uterine Activity:
 • Hyperstimulation
 • Placental
Decreased Fetal O2 ... Maternal Arterial O2 ... Decreased Maternal O2