78 results
Coronary Oxygen Balance 

Myocardial Oxygen Demand <-> Coronary Artery Blood Flow <-> Oxygen Availability

#cardiac #oxygen #pathophysiology
Coronary Oxygen ... Myocardial Oxygen ... Blood Flow <-> Oxygen ... Availability #cardiac #oxygen ... #pathophysiology
ROTH Score to Assess O2 Sat for Telemedicine

Have pt take deep breath in & count out
#ROTH #Score #O2Sat ... #Oxygen #Saturation
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
Oxygen Delivery ... • Delivers oxygen ... Simple Face Mask ... Nonrebreather Mask ... Venturi Mask (venti-mask
#oxygen #deliver #mask #hospital #nasal #cannula #venturi #mask #face #nonrebreather #o2
#oxygen #deliver ... #mask #hospital ... cannula #venturi #mask
Oxygen-Hemoglobin Dissociation Curve

Left Shift (↓ O2 unloading to tissue), Left = Lower:
 • ↓ H+ (↑
Oxygen-Hemoglobin ... MatthewHoMD #Oxygen ... Dissociation #Curve #pathophysiology
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
- insufficient oxygen ... Hypoxemia - low oxygen ... - atmospheric oxygen ... PAO2 - alveolar oxygen ... diagnosis #causes #pathophysiology
Oxygen Delivery Methods
 • Nasal Cannula
 • Nonrebreather Mask
 • Non-Invasive Ventilation (CPAP/BiPAP)
 • Venturi Mask
Oxygen Delivery ... Nonrebreather Mask ... BiPAP) • Venturi Mask ... @DharSaty #Oxygen
Mask Oxygen Delivery Devices

Simple Mask aka Hudson's Mask:
 • Flow 6-10 LPM
 • FiO2 35-50%
Face Tent:
Mask Oxygen Delivery ... aka Hudson's Mask ... small valve to mix oxygen ... increases delivered oxygen ... #Oxygen #Delivery
Oxygen Delivery Equation
DO2 = CO x {(1.39 x Hb x sO2) + (PaO2 x 0.03)}
DO2 =
Oxygen Delivery ... DO2 = Rate of oxygen ... Partial pressure of oxygen ... to understand oxygen ... Delivery #Equation #pathophysiology
Oxygen Delivery Systems
Nasal Cannula:
 • Flow: 1 - 6 L/min
 • FiO2: 25 - 40% (-4%/L
Oxygen Delivery ... of flow) Face Mask ... ~40% Venturi Mask ... rishikumarmd #Oxygen