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

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential Diagnosis ... Right-to-Left Shunt ... (↑Shunting), ↓Perfusion ... Dead space) • ↓Diffusion ... #Differential #Diagnosis
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
- Differential Diagnosis ... syndrome, OSA DIFFUSION ... VIQ mismatch and shunt ... pulmonary embolus SHUNT ... #Differential #Diagnosis
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
Hepatopulmonary Syndrome - Diagnosis ... 1) or anatomic shunt ... Arterial blood gas (ABC ... performed on room air ... older) on room air
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 ... - Differential Diagnosis ... Framework Knee Effusion ... #differential #diagnosis ... #msk #physicalexam
Patellofemoral Syndrome - Pathogenesis and clinical findings
 • Anterior Knee Pain with possible symptoms of 'catching'
• Secondary effusion ... joint with MRI effusion ... pathophysiology #diagnosis ... signs #symptoms #msk
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
(assumes Room Air ... Right to Left Shunt ... - Anatomic Shunt ... Disease and more • Diffusion ... #differential #diagnosis
Causes of Cyanosis in the Newborn - Differential Diagnosis Algorithm
Peripheral Only:
 • Poor Perfusion
 • Acrocyanosis
Hemoglobinopathy:
- Differential Diagnosis ... Only: • Poor Perfusion ... Left-to-Right Shunt ... Right-to-Left Shunt ... #Differential #Diagnosis
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
- Differential Diagnosis ... oticus (Ramsay Hunt ... Amy Chung, MD, MSc ... #Differential #Diagnosis