862 results
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
O2 is inspired) PAO2 ... Low SvO2 → Low PaO2 ... sepsis) - High PaO2 ... Hypoxemia #summary #pulmonary ... differential #diagnosis #causes
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
/0.8)] - PaO2 Simplified ... Intracardiac, Pulmonary ... V/Q Mismatch: Pulmonary ... , Atelectasis, Pulmonary ... Diffusion Defect: Pulmonary
Perform computations online at:
ScyMed.com
6th ED
ICU-card
«ICU, Formulas & Drugs»
HEMODYNAMIC PATTERNS
Condition
SAP
CVP

PAP PCWP

CO C(a-v)02 PVR

SVR
Hypovolemic shock
↓
↓
↓
↓
↓
↑
↑
↑
Cardiogenic shock
↓
1
↑
1

1
↑

Septic shock
↓
↓
↓
↓
↑
↓
↓
↓
Cardiac Tamponade
.
↑
↑
1
↓

→
↑
RV
→ ↓ → →↑ Pulmonary ... +2PDP)/3 Mean Pulmonary ... MPAP-WP)*79.92)/CO Pulmonary ... = 1.36 cmH20 PULMONARY ... age-corrected PAO2
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Differential Diagnosis Algorithm ... Respiratory Acidosis (pCO2 ... Respiratory Alkalosis (pCO2 ... Differential #Diagnosis #Algorithm ... #Causes #Compensation
Pulmonary and Non-Pulmonary Causes of ARDS #Diagnosis #EM #PCC #ARDS #Differential #Algorithm #Pulmonary #NonPulmonary #Causes #Ddxof
Pulmonary and Non-Pulmonary ... Causes of ARDS ... #Differential #Algorithm ... #Pulmonary #NonPulmonary ... #Causes #Ddxof
Hypoxemia vs Hypoxia
Hypoxemia - Partial pressure of arterial oxygen (PaO2) is below normal
Hypoxia - Insufficient oxygen
arterial oxygen (PaO2 ... compensate for low PaO2 ... diagnosis #comparison #pulmonary
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
HYPOVENTILATION • Rising PaCO2 ... lung diseases, pulmonary ... asthma, COPD, pulmonary ... shunting (eg, pulmonary ... Differential #Diagnosis #pulmonary
Platypnea-Orthodeoxia Syndrome on Physical Exam
The case of a patient with a diagnosis of cirrhosis and platypnea-orthodeoxia
Physical Exam The case ... there is a drop in SaO2 ... to 90% (and in paO2 ... #respiratory #pulmonary
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ABG vs VBG: Arterial vs Venous Blood Gases

ABG
PROS: Tells you exactly what the arterial environment looks
vs Venous Blood Gases ... looks like (pH, PaCO2 ... Comparison #pH #pCO2
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
consistent with pulmonary ... lung collapse, or pulmonary ... inspired oxygen (PaO2 ... - 200 mm Hg < PaO2 ... - 100 mm Hg < PaO2