536 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = [FiO2 ... chest) • Low PiO2 ... Elevation, Low Fio2 ... Intracardiac, Pulmonary ... Hypoxia #hypoxemia #differential
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Flow 6-10 LPM • FiO2 ... 10-15 LPM • FiO2 ... 10-15 LPM • FiO2 ... 10-15 LPM • FiO2 ... Devices #management #pulmonary
Oxygen Delivery Systems
Nasal Cannula:
 • Flow: 1 - 6 L/min
 • FiO2: 25 - 40% (-4%/L
- 6 L/min • FiO2 ... - 10 L/min • FiO2 ... - 15 L/min • FiO2 ... on valve) • FiO2 ... devices #management #pulmonary
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
high percentage FiO ... set to desired FiO2 ... deliver desired FiO ... Oxygen #Delivery #FiO2 ... #Pulmonary #Equipment
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
consistent with pulmonary ... lung collapse, or pulmonary ... mm Hg < PaO2 / FiO2 ... mm Hg < PaO2 / FiO2 ... Severe - PaO2 / FiO2
Pulmonary Embolism on POCUS Echocardiogram

Mid 30's female with chest pain/dyspnea.  Triage EKG (no prior).
Pulmonary Embolism ... on POCUS Echocardiogram ... Differential/diagnosis ... Pulmonary embolism ... RJonesSonoEM #Pulmonary
Oxygen Delivery Devices - Comparison
Low Flow:
 • Nasal cannula (1-6L, 24-40% FiO2)
 • Face mask (5-10L,
(1-6L, 24-40% FiO2 ... (5-10L, 35-60% FiO2 ... (5-15L, 35-50% FiO2 ... (1-15L, 24-45% FiO2 ... Comparison #table #pulmonary
False Positive Lung Point on POCUS
Lung-Cardiac Point and Lung-Diaphragm Point
These images highlight selected differentials to pleural
Lung Point on POCUS ... highlight selected differentials ... False #LungPoint #POCUS ... lungdiaphragam #ultrasound #pulmonary ... #differential #
Diffuse consolidation
The most common cause of diffuse consolidation is pulmonary edema due to heart failure.
This is
consolidation is pulmonary ... cardiogenic edema, to differentiate ... redistribution of pulmonary ... a superimposed pulmonay ... Consolidation #Differential
Pulmonary Hypertension - Classification, Evaluation, POCUS Assessment

#PHTN #Pulmonary #Hypertension #Classification #Evaluation #POCUS #Assessment #Groups
Pulmonary Hypertension ... Classification, Evaluation, POCUS ... Assessment #PHTN #Pulmonary ... Classification #Evaluation #POCUS