221 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Knee Effusions - Differential ... Loss of sensation distal ... Arthritis: - Staphylococcal ... Effusions #causes #differential ... diagnosis #msk #physicalexam
Common Childhood Exanthems - Differential Diagnosis
1) Rubeola (Measles) - Measles morbillivirus (MeV)
2) Scarlet Fever - Streptococcus
Childhood Exanthems - Differential ... Rubella Virus 4) Staphylococcal ... Skin Syndrome - Staphylococcus ... Childhood #Exanthems #Differential
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
(endogenous): Staphylococci ... Streptococci (oral), Staphylococci ... Streptococcus pneumonia, Staphylococcus ... Infections #Timeline #differential
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Valve - Acute: • Staphylococcus ... streptococci • Staphylococcus ... aureus • Staphylococcus ... aureus • Staphylococcus ... Noninfective #Causes #Differential
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
streptococci - Staphylococcus ... aureus - Staphylococcus ... aureus - Staphylococcus ... viridans - Staphylococcus ... Pathogens #Diagnosis #Differential
Nikolsky's Sign in Toxic Epidermal Necrolysis (TEN)

Nikolsky's sign is a clinical dermatological sign which is present
necrolysis and Staphylococcal ... exfoliative toxin of Staphylococcus ... #Dermatology #PhysicalExam
Septic Arthritis - Pathogens and Clinical Clues

Staphylococcus aureus 
Streptococcal spp. 
Neisseria gonorrhoeae 
Aerobic/Anaerobic 
Gram-negative bacteria 
Brucellosis
Clinical Clues Staphylococcus ... Arthritis #Pathogens #Differential
Distal Renal Tubular Acidosis (RTA)  Type 1 

Totally scuppers the kidney's acidification mechanism. Will be
Distal Renal Tubular ... acidify urine in distal ... #RTA #Type1 #Distal ... Nephrology #Causes #Differential
Acute Diarrhea - Differential Diagnostic Algorithm
Watery/Large Volume (Small Bowel)
 • Viral
 • Bacterial (e.g. C peffrjngens,
Acute Diarrhea - Differential ... Bacillus cereus • Staphylococcus ... Acute #Diarrhea #Differential
Urine Anion Gap in NAGMA
NA + K - Cl = surrogate for Urine NH4+
NH4+ is excreted
NEGATIVE when the distal ... imparied: - Distal ... NAGMA #diagnosis #differential