64 results
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Blood Cultures ... Did they receive antibiotics ... prior to cultures ... Decreased yield due to antibiotic ... negative IE -
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Histoplasma) - Culture ... negative bacilli ... streptococci - Culture ... negative #Infective ... Pathogens #Diagnosis #Differential
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... negative infective ... BCNIE #Causes #differential ... #negative #Endocarditis ... #CNIE #BCNIE #cardiology
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... Negative Abscess ... - Differential ... Consider prior antibiotics ... #Differential #
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Systemic infection Native ... • HACEK • Culture-negative ... epidermidis • Gram-negative ... Enterococcus • Gram-negative ... Noninfective #Causes #Differential
Epidemiological Clues That May be Helpful in Defining the Etiological Diagnosis of Culture-Negative Endocarditis

#Endocarditis #Bacteria #Differential
Etiological Diagnosis of Culture-Negative ... Endocarditis #Bacteria #Differential
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
Blood culture contaminants ... Grouped by gram negative ... Microbiology #Micro #Differential
Normal Simmonds-Thompson Test (Negative) for Achilles Tendon Rupture

In this normal Simmonds-Thompson test, plantar flexion of the
Simmonds-Thompson Test (Negative ... Achilles Tendon Rupture ... #Test #Normal #Negative ... Achilles #Tendon #Rupture ... #Clinical #Video
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Neutrophil (Normal) Differential ... having positive cultures ... likelihood of negative ... indicator of infection relative ... #Bandemia #differential
Positive Seidel test on fluorescein stain exam

Globe rupture can be identified by a positive Seidel test
exam Globe rupture ... Globe rupture should ... , and starting antibiotics ... #Globe #Rupture ... #PhysicalExam #Video