49 results
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... and pneumocystis False ... Glucan-containing gauzes ... other fungi • False ... Galactomannan #Pathogens #Testing
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
drugs that may cause ... false positive ... FalsePositive #Testing
Klebsiella Thigh Abscess on Point of Care Ultrasound (POCUS)

Redness over the thigh. POCUS shows this.
Care Ultrasound (POCUS ... POCUS shows this ... Interestingly this was a false ... #Pyomyositis #POCUS ... #MSK #Clinical
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Causes of Neuromuscular ... Demyelinating Disease (MS ... poisoning, Scorpion sting ... Neuromuscular #Weakness #Causes
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
Crossmatch - involves testing ... antigens (often false ... Causes purpura & ... TRALI): Leading cause ... negatives on testing
Froment’s Test for Ulnar Nerve Palsy

This tests for pinch grip weakness caused by ulnar nerve palsy,
grip weakness caused ... ulnar nerve palsy, testing ... #physicalexam #msk
Causes of Gallbladder Wall Thickening - Differential Diagnosis
 • Physiologic: Contracted gall bladder in a non-fasting
Causes of Gallbladder ... bladder in a non-fasting ... Diagnosis #radiology #POCUS
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
antigens (often false ... Causes purpura & ... TRALI): Leading cause ... negatives on testing ... more likely to cause
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... probability of getting ... null when it’s false ... when it is indeed false ... but not on the causal
Ulcerative Colitis vs Crohn's Disease - IBD Comparison Table
Ulcerative Collitis
 - Location
ileum • Most cases ... Locality in the setting ... Amy Chung, MD, MSc