13 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Weakness, Loss of Chest ... Wall Elasticity (flail ... chest) • Low ... , Interstitial Lung ... Hypoxia #hypoxemia #differential
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
symptomatology Differential ... allopurinol), Infection ... high resolution chest ... , biopsy By Tess ... #differential #
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... organism identified, Strep ... failure, COPD, Lung ... /- High res CT chest ... diagnosis #evaluation #differential
Right-Sided Heart Failure - Differential Diagnosis Algorithm
Cardiac Causes - Rule out Left-Sided Heart Failure (Most Common):
Heart Failure - Differential ... • Diffuse Lung ... Acute Respiratory Distress ... Syndrome ... • Chronic Lung Infection
Differential Diagnosis of Respiratory Acid-Base Disorders
Alkalosis
A. Central nervous system stimulation: Pain, Anxiety, psychosis, Fever, Cerebrovascular accident,
Differential Diagnosis ... receptors: Hemothorax, Flail ... sedatives), Stroke, Infection ... syndrome, Barotrauma ... #respiratory #acidbase
Etiologies of pulmonary infections according to CT-scan patterns. 
CMV cytomegalovirus, GM galactomannan, HSV herpes simplex virus,
Etiologies of pulmonary ... myelodysplastic syndrome ... #Lung #Infections ... ComputedTomography #Differential ... #Diagnosis #Chest
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... Aeruginosa - Strep ... Abscess Differential ... #Abscess #pulmonary ... #differential #
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Loss of weight • Chest ... • Mounier-Kuhn syndrome ... in the adjacent lung ... of the affected lung ... #differential #
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Illnesses: • Pulmonary ... Lady Windermere Syndrome ... : • Syndrome of ... • Dyspnea, • Chest ... #differential #
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Other tests: • CT chest ... confirm DAH, r/o infection ... sparing of the lung ... typically seen on chest ... #differential #