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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-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 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
DO2 Equation in Shock = Oxygen Delivery
DO2 = CO x (1.39 x [Hb] x SaO2 +(0.003xPaO2))
DO2
Equation in Shock = Oxygen ... DO2 = Rate of oxygen ... minute) 1.39 = Oxygen ... = Haemoglobin oxygen ... every 1 mmHg of oxygen
Oxygen Delivery by Device

Nasal Cannula 
• Indicated for low-flow, low-percentage supplemental oxygen. 
• Flow rate of
Oxygen Delivery ... • Delivers oxygen ... • Delivers oxygen ... percentage of oxygen ... Delivers 24%—60% oxygen
Normal Hemodynamic Cardiac Parameters

Central Venous Pressure 

Pulmonary Artery Wedge Pressure 

Cardiac Index 

Stroke Index 

Systemic Vascular
Resistance Index Oxygen ... Delivery Oxygen ... Uptake Oxygen
Oxygen Delivery Systems and Approximate FiO2:
#Management #SupplementalO2 #Oxygen #Delivery #Devices #Interface #FiO2 #NonRebreather #HFNC #NasalCannula #Simple
Oxygen Delivery ... SupplementalO2 #Oxygen
Graded Oxygen Administration in COVID-19

#respiratory #support #COVID19 #management #schema #criticalcare #hypoxia #failure #algorithm #coronavirus #sarscov2 #oxygen
Graded Oxygen Administration ... coronavirus #sarscov2 #oxygen