6 results
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
) PIO2 - atmospheric ... inspired) PAO2 - alveolar ... O2 reaches the alveoli ... hemoglobin in arterial ... #pulmonary #differential
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Atelectasis, ARDS, Pneumonia ... #AA #Gradient #alveolar ... #arterial #pulmonary ... #Hypoxia #hypoxemia ... #differential #
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Failure - Differential ... first part of alveolar ... • Causes: Pneumonia ... shunting (eg, atrial ... #Differential #
Community Acquired Pneumonia - Presenting Features
 • History in favor of CAP: Dyspnea, Cough, particularly if
Community Acquired ... Pneumonia - Presenting ... , Tachycardia, Hypoxemia ... when secondary to bacterial ... breaths/min, PaO2 / FiO2
Community Acquired Pneumonia (CAP) - Diagnosis and Management

Pneumonia Signs/Symptoms:
 • Confusion/disorientation (LR + 1.9)
 • Cough
Community Acquired ... (LR + 2.7) • Hypoxia ... • PaO2/FiO2 ratio ... or CT Scan Bacterial ... treatment #Pulmonary #Community
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
Edema (NCPE) - Differential ... interstitium and alveoli ... dissolved in the PaO2/FiO2 ... of the spiral arteries ... edema #causes #differential