26 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Arterial Hypertension ... Right to Left Shunt ... Defect ** • Atrial ... Right to Left Shunt ... Hypoventilation Syndrome
Hepatopulmonary Syndrome on Echocardiogram (A4C)
Hepatopulmonary Syndrome: Intrapulmonary shunting is most commonly demonstrated by contrast TTE when
Echocardiogram (A4C ... visualized in the left atrium ... with intracardiac shunt ... Echocardiogram #A4C ... #bubble #shunting
Hepatopulmonary Syndrome (HPS) demonstrated on Echocardiogram Bubble Study

Intra-cardiac shunt: Bubbles appear in LA quickly (within 3
Hepatopulmonary Syndrome ... Intra-cardiac shunt ... beats) Intra-pulmonary ... shunt (this video ... Hepatopulmonary #Syndrome
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
obesity-hypoventilation syndrome ... VIQ mismatch and shunt ... embolus SHUNT ... hepatopulmonary syndrome ... shunting (eg, atrial
Hepatopulmonary Syndrome - Echocardiogram (A4c) with bubble study showing delayed right-to-left shunt consistent with intrapulmonary shunt
68M
Echocardiogram (A4c ... ) with bubble study ... right-to-left shunt ... Echocardiogram #bubble ... pocus #hepatology #a4c
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Pericardial • Effusion ... Acute Coronary Syndrome ... Arrhythmia • Atrial ... Abnormalities • Pleural Effusions ... Vessels • Pulmonary
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Hypoventilation Syndrome ... Right to Left Shunt ... Hepatopulmonary Syndrome ... Disease and more • Diffusion ... Gradient #alveolar #arterial
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
Hepatopulmonary Syndrome ... 1) or anatomic shunt ... blood gas (ABC) ... scanning or pulmonary ... hepatopulmonary #syndrome
Causes of Cyanosis in the Newborn - Differential Diagnosis Algorithm
Peripheral Only:
 • Poor Perfusion
 • Acrocyanosis
Hemoglobinopathy:
Only: • Poor Perfusion ... Left-to-Right Shunt ... Arteriosus • Atrial ... Total Anomalous Pulmonary ... Right-to-Left Shunt
Causes of Dyspnea - Differential Diagnosis Algorithm
Cardiac:
 • Dysrhythmia
 • Ischemia
 • Cardiomyopathy
 • Valvular disease
Superior vena cava syndrome ... • Shunt Airway ... Pneumonia • Pulmonary ... embolism • Pulmonary ... Pleura: • Pleural effusion