1780 results
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
with vascular causes ... episodes caused ... test (posterior ... test Méniére's ... Vertigo #Algorithm #differential
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Hypertension - Differential ... Renal ultrasound, Tests ... sodium loading test ... conditions (supine position ... #Hypertension #Differential
Strabismus - Ocular Misalignment - Differential Diagnosis Algorithm
Phoria:
 • Latent deviation
 • Symmetrical corneal light reflex,
Misalignment - Differential ... positive cover/ ... light reflex, • Positive ... #Misalignment #Differential ... Diagnosis #Algorithm #Causes
Black and Bloody Stools - Melena and Hematochezia
Melena - Refers to passage of black, tarry (sticky
Occult blood tests ... are positive. ... occult blood tests ... Hematochezia #Diagnosis #Differential ... #Causes #GIBleed
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Causes of Inaccurate ... Fecal Occult Blood Test ... Results False Positive ... medication False Positive ... FalseNegative #Diagnosis #Differential
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Medications that Can Cause ... Positives on Drug Tests ... medications can cause ... false-positive ... #drug #tests #differential
RPR - False Positives
Causes of a false positive RPR that are not syphilis. (False-negative treponemal tests
False Positives Causes ... of a false positive ... False-negative treponemal tests ... are rare; case ... False #Positives #differential
Cytomegalovirus (CMV) in HIV-AIDS Patients
Cytomegalovirus (CMV): double-stranded DNA virus, herpesvirus family.
CMV infection: virus isolation or detection
pp65 antigenemia test ... inclusions or positive ... Retinitis (Most common cause ... AIDS #diagnosis #differential
D-dimer
Plasma D-dimer is a product of clot breakdown, released upon degradation of polymerized, crosslinked fibrin. Elevated
age, which can cause ... i.e. more false positive ... tests) in older ... pathophysiology #hematology #differential
Tuberculin Skin Test (Positive Mantoux Test) Result, Reading and Interpretation

#Diagnosis #Tuberculosis #LatentTB #Tuberculin #SkinTest #TST #Interpretation
Tuberculin Skin Test ... (Positive Mantoux ... Test) Result, Reading ... Tuberculin #SkinTest #TST ... GrepMed Recommended Text