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Apical 4-chamber (A4) Apical 4 Chamber view demonstrating the right ventricle (RV), right atrium (RA), left
ventricle (RV), right atrium ... (RA), left ventricle ... (LV) and left atrium ... septum #Clinical #EM ... #Cardiology #POCUS
Left Atrium
 - The upper posterior border of the heart is formed by the left atrium.
Left Atrium - The ... left atrium ... #Anatomy #Radiology ... #CXR #Lateral #Atrium ... #Ventricle #Cardiac
On a chest film only the outer contours of the heart are seen.
In many cases we
Left Atrium - Most ... left atrium. - ... Left atrial appendage ... left atrium results ... #Anatomy #Radiology
Cardiac conducting system 
 - Sinoatrial (SA) node normally generates the action potential, i.e. the electrical
Cardiac conducting ... atrium (RA), travels ... atrium (LA) ... #Anatomy #Cardiology ... #Cardiac #Heart
Subxiphoid 4-chamber view showing right ventricle (RV), right atrium (RA), left ventricle (LV) and left atrium
ventricle (RV), right atrium ... (LV) and left atrium ... Note the small pericardial ... #Clinical #EM #Cardiology ... #POCUS #Subxiphoid
Atrial Fibrillation (A-Fib) Summary

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

Why?
Cardiac:
	• Valvular heart
Atrial Fibrillation ... risk factors Atrial ... and left atria, ... atrial thrombus ... atrial occlusion
Right Heart Catheterization Cheat Sheet: Interpretation of Pressures and Waveforms 
Direct measurements
 ● Central venous pressure
heart rate) ● Left ... contraction in atrial ... in RA pressure (atrial ... systole + passive atrial ... filling in atrial
Coronary Artery Embolism - Etiology and Scoring
Etiology:
 • Direct: Clot (LV thrombus, LAA Thrombus), Valve (Vegetation,
Paradoxical: Right to Left ... non-culprit vessels • Atrial ... , h/o of cardiac ... Artery #Embolism #diagnosis ... scoring #criteria #cardiology
This is a parasternal long axis view of a young patient presenting with 3 days of
aortic root, and left ... atrium should roughly ... Michael Macias, EM ... #Radiology #POCUS ... #CardiacUS #ParsternalLong
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
Effect in Right Atrium ... or PFO with left ... Effect #Right #Atrium ... #cardiology #clinical ... echocardiogram #s4c #pocus