13 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Histoplasma) - Culture ... streptococci - Culture ... Pathogens #Diagnosis #Differential ... #InfectiousDiseases
Coverage of common antibiotics used in the hospital

For empiric coverage, first define the type of infection,
then review prior cultures ... Obtain cultures ... #management #infectiousdisease ... #antibiogram #pharmacology
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... identified with modern culture ... BCNIE #Causes #differential ... diagnosis #causes #culture ... #Endocarditis #InfectiousDiseases
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... Negative Abscess - Differential ... of a negative culture ... Negative #Abscess #Differential ... #Diagnosis #InfectiousDiseases
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Neutrophil (Normal) Differential ... having positive cultures ... including blood cultures ... #Bandemia #differential ... CBC #hematology #pathophysiology
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... separate blood cultures ... - Standard culture ... Endocarditis #diagnosis #differential ... #workup #infectiousdiseases
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
#hyperkalemia #differential ... #diagnosis #pathophysiology ... #pharmacology #
Drug-Induced Edema
Drug-induced edema is caused by many drugs & can coincide with or worsen pre-existing peripheral
Medication #Causes #Differential ... #Pharmacology # ... Pathophysiology
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
- Overview and Differential ... 90% of IE cases Culture ... staphylococci Culture ... #Endocarditis #Differential ... Diagnosis #cardiology #infectiousdiseases
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess Pathophysiology ... • Sputum/Blood cultures ... Lung Abscess Differential ... Abscess #pulmonary #differential