1074 results
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
O2 is inspired) PAO2 ... reaches the alveoli) PaO2 ... Low SvO2 → Low PaO2 ... Low SvO2 → Low PaO2 ... sepsis) - High PaO2
Respiratory Oxygenation Cycle - Pathophysiology
PO2 and PCO2

By @rev.med

#Respiratory #Oxygenation #Cycle #circulation #pathophysiology
Respiratory Oxygenation ... Pathophysiology PO2 ... and PCO2 By @rev.med ... #Respiratory #
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = PAO2 ... - PaO2 A-a gradient ... /0.8)] - PaO2 Simplified ... /0.8)] - PaO2 Normal ... Hypoventilation: CNS of Respiratory
Markers of Organ Dysfunction in Severe Sepsis 
Altered consciousness 
Confusion 
Psychosis 

Tachycardia 
Hypotension 
Altered CVP 
Altered
Altered CVP Altered PAOP ... Tachypnoea PaO2 ... <70mmHg SaO2 < ... 90% PaO2/FiO2 300%
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
min 400-600 mL Respiratory ... -PECO2))/PaCO2 ... = >60% Forced Espiratory ... age-corrected PAO2 ... ratio Respiratory
Arterial Blood Gas (ABG) Analysis - Metabolic + Respiratory Acidosis + Alkalosis

pH ↓ pCO2 ↓ -
- Metabolic + Respiratory ... acidosis pH ↑ pCO2 ... alkalosis pH ↑ pCO2 ... ↓ - Respiratory ... ↑ - Respiratory
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Criteria for Acute Respiratory ... Syndrome (ARDS) - Respiratory ... - 200 mm Hg < PaO2 ... - 100 mm Hg < PaO2 ... #ARDS #Acute #Respiratory
Understanding & Treating ARDS - Acute Respiratory Distress Syndrome

•  Timing - within one week of
Treating ARDS - Acute Respiratory ... Origin of Edema - respiratory ... Impaired Oxygenation PaO2 ... nickmmark #ARDS #Respiratory
Blood Gas (ABG) Interpretation and Acid-Base Pathology
1- Does the patient have an acidosis or an alkalosis?
– metabolic or respiratory ... Look at the pCO2 ... Metabolic Equal (If pCO2 ... the change in pCO2 ... calculate the expected pCO2
Platypnea-Orthodeoxia Syndrome on Physical Exam
The case of a patient with a diagnosis of cirrhosis and platypnea-orthodeoxia
observe how the respiratory ... there is a drop in SaO2 ... to 90% (and in paO2 ... video #breathing #respiratory