9 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
by A-a Gradient ... Normal A-a Gradient ... compliance ↑ A-a Gradient ... #pulmonary #Aa ... #Gradient
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = ... A-a Gradient ≤ ... • Alveolar Hypoventilation ... UnremarkableLab #AA ... #Gradient #alveolar
Diagnosis of ascites according to the serum ascites albumin gradient (SAAG)
SAAG ≥ 1.1:
 - Ascitic protein
ascites albumin gradient ... (SAAG) SAAG ≥ ... Tuberculosis #SAAG ... ascites #albumin #gradient ... differential #diagnosis #algorithm
Hepatopulmonary Syndrome (HPS) 

HPS-differential diagnosis:
1. Pulmonary vasculature
2. Diseases of the lung parenchyma
3. Pleura and diaphragm

HPS-diagnosis:
1. Patients
Pulmonary vasculature ... Alveolar-arterial ... oxygen gradient ... HPS #hepatology #pulmonary
Ascites - Diagnosis and Management Summary
Paracentesis studies: cell count + differential, albumin, protein, culture
 • Serum-ascites-albumin-gradient
Management Summary Paracentesis ... Serum-ascites-albumin-gradient ... (SAAG): > 1.1 g ... Summary #Hepatology #SAAG ... #paracentesis
Hepatopulmonary Syndrome (HPS) Diagnosis Algorithm
Bubble echo is the first piece of the puzzle. The nail on
HPS) Diagnosis Algorithm ... the dx is an A-a gradient ... HPS #Diagnosis #Algorithm ... #hepatology #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
)*(100) | A-a GRADIENT ... -25 mmHg A-a Gradient ... 0.25*age) A-a Gradient ... 95-105 mmHg Alveolar ... 35-45 mmHg Alveolar
High Flow Nasal Cannula
Putative beneficial mechanisms of high flow nasal cannula (HFNC) 
oxygen therapy. EELV, end-expiratory
hydrostatic capillary-alveolar ... gradient #hfnc ... #management #pulmonary
Hepatopulmonary Syndrome - Illness Script
HPS is a pulmonary disorder of chronic liver disease characterized by a
Script HPS is a pulmonary ... time = increased Aa ... gradient • Intrapulmonary ... portal HTN • Aa ... gradient ≥15 mmHg