137 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Algorithm Ventilation/perfusion ... Parenchymal Disease Diffusion ... Right to Left Shunt ... Right to Left Shunt
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Right-to-Left Shunt ... (↑Shunting), ↓Perfusion ... Dead space) • ↓Diffusion
Loculated pericardial effusion seen in apical 4-chamber on echocardiogram

Dr. J. Christian Fox @jchristianfox

#Pericardial #Effusion #Loculated #complex
Loculated pericardial effusion ... #Pericardial #Effusion ... POCUS #Clinical #A4C
Pericardial Clot on Echocardiogram

ST elevation of acute pericarditis was misdiagnosed as STEMI and thrombolysed with SK
thrombolysed with SK ... hemorrhagic pericardial effusion ... #Pericardial #effusion ... clinical #cardiology #a4c
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
syndrome, OSA DIFFUSION ... VIQ mismatch and shunt ... of reversible diffusion ... with adequate perfusion ... pulmonary embolus SHUNT
Causes of Cyanosis in the Newborn - Differential Diagnosis Algorithm
Peripheral Only:
 • Poor Perfusion
 • Acrocyanosis
Hemoglobinopathy:
Only: • Poor Perfusion ... Left-to-Right Shunt ... Right-to-Left Shunt
Cardiac Rupture with Pericardial Effusion

Apical 4 chamber. Note larger right sided pericardial effusion with significant compression
with Pericardial Effusion ... sided pericardial effusion ... #pericardial #effusion ... ultrasound #Cardiology #A4c
Shoulder Effusion Ballottement on Physical Examination

Shoulder effusion. You can ballot and see fluid return at posterior
Shoulder Effusion ... Examination Shoulder effusion ... #Shoulder #Effusion ... #PhysicalExam #msk
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... Framework Knee Effusion ... Infectious Knee Effusions ... Traumatic Knee Effusions ... differential #diagnosis #msk
Ascites, pericardial effusion, and left pleural effusion on subcostal 4-chamber POCUS echocardiogram

Subcostal window in SLE patient.
Ascites, pericardial effusion ... and left pleural effusion ... , left pleural effusion ... #pericardial #effusion ... #s4c #POCUS #echocardiogram