8 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
AVMs, Hepatopulmonary ... Embolism, Obstructive Lung ... , Interstitial Lung ... #alveolar #arterial ... #pulmonary #Hypoxia
Hepatopulmonary Syndrome (HPS) 

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

HPS-diagnosis:
1. Patients
Hepatopulmonary ... Diseases of the lung ... Alveolar-arterial ... oxygen gradient ... HPS-severity classification
GOLD2017 - The refined ABCD assessment tool. FEV1: forced expiratory volume in 1 s; FVC: forced vital
- The refined ABCD ... Chronic Obstructive Lung ... #Diagnosis #Pulmonary ... #Staging #Grading ... #Classification
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
gravity-dependent gradients ... direction leads to hypoxemia ... Pneumonia, asthma, COPD ... AVMs, hepatopulmonary ... shunting (eg, atrial
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
Hepatopulmonary ... absence of intrinsic lung ... blood gas (ABC) ... on radioactive lung ... 80mmHg or A-a gradient
Pulmonary Hypertension Groups - WHO Classification
Group I - Vascular remodeling of pulmonary arteries
 • Idiopathic, HIV,
Groups - WHO Classification ... arteries • Idiopathic ... III - Chronic lung ... disease causing hypoxemia ... • COPD, ILD,
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Chronic cough • Hypoxia ... obstruction • COPD ... in the adjacent lung ... of the affected lung ... CT) • Broncho-arterial
Hepatopulmonary Syndrome - Illness Script
HPS is a pulmonary disorder of chronic liver disease characterized by a
Hepatopulmonary ... leads to impaired arterial ... = increased Aa gradient ... presence in the lower lung ... portal HTN • Aa gradient