39 results
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
may be present Central ... with vascular causes ... auditory findings BPPV ... positional episodes caused ... test (posterior
The head impulse test (HIT) result is positive (abnormal) in nearly all patients with a peripheral
The head impulse test ... HIT) result is positive ... cause of AVS. ... #Diagnosis #PhysicalExam ... #Neurology #AVS
HINTS Exam - Distinguishing Central from Peripheral Vertigo
 • Head Impulse: Head thrust 10° with eyes
Distinguishing Central ... following a finger) • Test ... TylerLarsenMD #HINTS #physicalexam ... Vertigo #diagnosis #neurology ... #bppv #comparison
HINTS Exam - Abnormal Test of Skew (Abnormal Vertical Skew)

In a patient with vertigo symptoms, this
Exam - Abnormal Test ... cause of vertigo ... #HINTS #PhysicalExam ... Clinical #Video #Neurology ... #Vertigo #Central
Characteristics of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
 • Onset: Sudden
 • Intensity: Severe initially, often decreasing
Peripheral and Central ... labyrinthitis) CENTRAL ... with vascular causes ... #Peripheral #Central ... symptoms #comparison #neurology
HINTS Exam - Normal Head Impulse Test = Central Cause

This patient as a normal head impulse
Normal Head Impulse Test ... = Central Cause ... cause of vertigo ... #HINTS #PhysicalExam ... Clinical #Video #Neurology
HINTS Exam - Bidirectional Nystagmus 

In a patient with vertigo symptoms, this finding is worrisome for
worrisome for a CENTRAL ... cause of vertigo ... Nystagmus #HINTS #PhysicalExam ... Clinical #Video #Positive ... #Neurology #Central
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
chronic kidney tests ... Test for celiac ... is positive Bidirectional ... change medical management ... Gastrointestinal #Evaluation #workup
Romberg's Test for Proprioception
History: First described in the 19th century in patients with tabes dorsalis (later
syphilis) Meaning: Positive ... Observe when patient closes ... open and closed Positive ... #neurology #diagnosis ... proprioception #physicalexam
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Case Control ( ... PPV: proportion ... of positive tests ... specificity -> higher PPV ... control): odds