127 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = PAO2 ... - PaO2 A-a gradient ... (Patm - 47) - (PaCO2 ... : Atelectasis, ARDS ... Disease and more • Diffusion
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Berlin Criteria for Acute ... Distress Syndrome (ARDS ... explained by pleural effusions ... severity of the ARDS ... #Acute #Respiratory
Acute Respiratory Distress Syndrome – ARDS: Clinical Cheat Sheet

An acute diffuse, inflammatory lung injury, leading to
Acute Respiratory ... Distress Syndrome – ARDS ... on CT or CXR ● PaO2 ... there is no clear cause ... the underlying cause
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Causes of Chronic ... Pericardial • Effusion ... Stable Angina • Acute ... Pneumonia • ARDS ... Diagnosis #Algorithm #Causes
Understanding & Treating ARDS - Acute Respiratory Distress Syndrome

•  Timing - within one week of
Understanding & Treating ARDS ... - Acute Respiratory ... Impaired Oxygenation PaO2 ... @nickmmark #ARDS ... Respiratory #Distress #Acute
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
average settings • Causes ... HYPOVENTILATION • Rising PaCO2 ... gas equation • Causes ... • Most common cause ... to hypoxemia • Causes
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
pleura in severe cases ... the severity Acute ... Distress Syndrome (ARDS ... submassive PE) POCUS ... #signs #Lung #POCUS
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acute or chronic ... 35-45 mmHg • PaO2 ... Metabolic: pH pCO2 ... Compensation, Acute ... - Rapid saline infusion
Acute Hypoxemia - Differential Diagnosis
 • Hyperacute: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
Acute Hypoxemia ... - Physiologic: ARDS ... Hemorrhage • Impaired Diffusion ... Differential #Diagnosis #causes
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
diseases in HIV/AIDS ... Pulmonary edema; ARDS ... complex • Nodular/Masses ... Parapneumonic effusion ... (NHL, primary effusion