5028 results
Sea Urchin Spine on POCUS
When you go out to the beach, watch out for Sea Urchins
Urchin Spine on POCUS ... for Sea Urchins cause ... cellulitis, x-ray negative ... #ForeignBody #POCUS
Normal hepatic vein Doppler Ultrasound tracing
1) a large antegrade waveform (negative velocity) noted during early and
antegrade waveform (negative ... in RA pressure caused ... This wave is caused ... tracing #diagnosis #pocus
Complex Pericardial Effusion with Tamponade on POCUS Echocardiogram - A4C
Pt sent to ED c intradialytic hypotension.
with Tamponade on POCUS ... Cultures including TB negative ... frequently benign causes ... consider serious causes ... Cardiac #Tamponade #POCUS
Complex Pericardial Effusion with Tamponade on POCUS Echocardiogram - PLAX
Pt sent to ED c intradialytic hypotension.
with Tamponade on POCUS ... Cultures including TB negative ... frequently benign causes ... consider serious causes ... Cardiac #Tamponade #POCUS
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
vs Noninfective Causes ... HACEK • Culture-negative ... epidermidis • Gram-negative ... Enterococcus • Gram-negative ... #Noninfective #Causes
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
FP + TN) = true negatives ... all positives Negative ... FN + TN) = true negatives ... / all negatives ... Specificity) Negative
Drugs Causing Acute Pancreatitis

Class Ia: The medications in which there was a rechallenge and other causes
rechallenge and other causes ... out other common causes ... Class II: Cases ... and atleast4 case ... #Pancreatitis #Causes
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... 100%, then all negative ... disease who test negative ... proportion of negative ... that are true negatives
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Endocarditis Native ... epidermidis - Gram-negative ... ) - Culture negative ... Enterococci - Gram-negative ... streptococci - Culture negative
Faget Sign - Pulse-Temperature Dissociation
Causes of Relative Bradycardia
 • Infectious Causes: Legionella, Psittacosis, Q fever, Typhoid
Dissociation Causes ... of Relative Bradycardia ... • Infectious Causes ... Non-Infectious Causes ... #Dissociation #relative