132 results
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
HCO3 < 24mmol/L) CO2 ... Respiratory Acidosis (pCO2 ... Respiratory Alkalosis (pCO2 ... < 35 mmHg) #AcidBase ... Diagnosis #Algorithm #Causes
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Weakness, Loss of Chest ... Elasticity (flail chest ... : Atelectasis, ARDS ... Embolism, Obstructive Lung ... , Interstitial Lung
Acute Respiratory Distress Syndrome – ARDS: Clinical Cheat Sheet

An acute diffuse, inflammatory lung injury, leading to
, inflammatory lung ... permeability, lung ... on CT or CXR ● PaO2 ... there is no clear cause ... the underlying cause
Lung Segment Anatomy Annotated on Chest CT
Right Lung:
 • Upper Lobe: Apical, Posterior, Anterior
 • Middle
Annotated on Chest ... CT Right Lung: ... radiopaedia.org/cases ... lobes #Segments #Chest ... #CT #CTChest #pulmonary
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Distress Syndrome (ARDS ... be present on a chest ... lobar collapse, lung ... severity of the ARDS ... >= 5cm H2O #ARDS
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
19 Patterns of Lung ... Findings on Chest ... ARDS 3. ... COVID19 #Patterns #Lung ... ChestCT #radiology #CTChest
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
7.35-7.45 • PaCO2 ... 35-45 mmHg • PaO2 ... Metabolic: pH pCO2 ... or restrictive lung ... MDaniyalHashmi1 #AcidBase
Effect of Lung Recruitment and Titrated Positive End-Expiratory Pressure (PEEP) vs Low PEEP on Mortality in
Effect of Lung Recruitment ... moderate to severe ARDS ... strategy with lung ... increased 28-day all-cause ... Recruitment #PEEP #ARDS
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
HYPOVENTILATION • Rising PaCO2 ... gas equation • Causes ... : Interstitial lung ... ventilation (V) in the lungs ... bypassing the lungs
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
and Associated Lung ... Pneumothorax: - No lung ... barcode sign - Lung ... pleura in severe cases ... Distress Syndrome (ARDS