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Atrial Fibrillation Overview

Symptoms:
Palpitations, light-headedness, dizziness, dyspnea, exercise intolerance, chest pain, near-syncope, syncope.

1. Why?
Cardiac:
• Valvular heart disease
•
Atrial Fibrillation ... exercise intolerance, chest ... Noncardiac: • Pulmonary ... #Fibrillation #Cardiology ... #Management #Algorithm
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
of Hypoxemia- Differential ... • Pulmonary Arterial ... Defect ** • Atrial ... Abnormalities • Chest ... Hypoxemia #Hypoxia #Differential
Multifocal Atrial Tachycardia (MAT)
• At least 3 different P wave morphologies: 
• Rate 100-180
• Irregular 
Etiology
Multifocal Atrial ... to chronic lung disease ... • Hypoxia • Pulmonary ... #Multifocal #Atrial ... Tachycardia #MAT #Cardiology
Highlighted Conditions With Arteritis or Periarteritis of the Coronaries
Takayasu's arteritis:
 - Onset < 40 yrs
 -
sinusitis - pulmonary ... pancreatitis Erdheim-Chester ... disease: - Bone ... Coronaries #Arteritis #Differential ... #Diagnosis #Cardiology
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Radiographic Features of Pulmonary ... Diseases - Pneumonia ... #Diseases #Radiology ... Lung #CXR #XRay #ChestCT ... #Differential #
Causes of Palpitations
 • ARRHYTHMiA 
 • SINUS ARRYTHMIA 
 • ATRIAL FIBRILLATION 
 • ATRIAL
ARRYTHMIA • ATRIAL ... FIBRILLATION • ATRIAL ... PHAEOCHROMOCYTOMA • PULMONARY ... Palpitations #Causes #Differential ... #Diagnosis #Cardiology
Clues to Differential Diagnosis of Central Cyanosis: Onset of cyanosis, Clubbing, Secondary erythrocytosis, Auscultation, X-ray, Echocardiography,
Clues to Differential ... Echocardiography, Arterial ... heart defect - Pulmonary ... diseases - Pulmonary ... Diagnosis #Central #Cardiology
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Hypoventilation: CNS ... neuromuscular disease ... , ↓ chest wall compliance ... Diagnosis #Algorithm #pulmonary
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Hypoventilation: CNS ... Weakness, Loss of Chest ... Elasticity (flail chest ... Gradient #alveolar #arterial ... #hypoxemia #differential
Abnormal Jugular Venous Pressure Waveforms - Differential Diagnosis
 - Absent a wave - Atrial fibrillation, sinus
Pressure Waveforms - Differential ... myxoma, pulmonary ... Waveforms #JVP #Differential ... #Diagnosis #PhysicalExam ... #cardiology