11 results
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
auditory findings BPPV ... • Short-lived ... Positive Hallpike test ... or supine roll test ... #Algorithm #differential
Causes of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
1. Benign paroxysmal positional vertigo (BPPV) - Short-lived (typically less
PERIPHERAL VERTIGO ... (BPPV) - Short-lived ... usually lasting ... episode usually lasting ... #Causes #differential
Semont Liberatory Maneuver for Treatment of BPPV
1) The patient is seated upright on the side of
Semont Liberatory ... for Treatment of BPPV ... any nystagmus or vertigo ... #Semont #Liberatory ... #Maneuver #BPPV
Semont Liberatory Maneuver for Treatment of BPPV
1) The patient is seated upright on the side of
Semont Liberatory ... for Treatment of BPPV ... any nystagmus or vertigo ... #Semont #Liberatory ... #Maneuver #BPPV
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... texture at bald spots ... fungi Initial Laboratory ... Tests: • TSH ... • RPR • Laboratory
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
• mouthwash, short-chain ... naproxen and modern tests ... DrugScreening #UDS #Testing ... #Laboratory #diagnosis
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
adults • Blood tests ... Pulmonary function tests ... Bronchoscopy Laboratory ... Sweat chloride test ... Bronchiectasis #pulmonary #differential
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
Galactomannan Testing ... dx of IA PPV ... the use of this test ... in BAL does not differentiate ... FalsePositives #Laboratory
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Fecal Occult Blood Test ... #OccultBlood #Testing ... #Laboratory #FalsePositive ... FalseNegative #Diagnosis #Differential
Summary of Available Tests for Clostridium difficile Infection, in Decreasing Order of Sensitivity
 • Toxigenic culture
Summary of Available Tests ... vegetative cells or spores ... amplification tests ... difficile #CDiff #laboratory ... #diagnosis #testing