12 results
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
will correctly diagnose ... a case, or the ... that any given case ... it has a narrow focus ... Table #PPV #NPV #Formulas
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
- Differential Diagnosis ... - Renal ultrasound ... Duplex Doppler ultrasound ... ; MRA; abdominal ... #Differential #Diagnosis
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Causes of Lactate ... to bolus these values ... presentations and disease ... tests before beginning ... Causes of Lactate
Causes of Acute Kidney Injury ( AKI ) - Prerenal, Renal, and Postrenal

PRE-RENAL 
Impaired perfusion: 
•
Causes of Acute ... • Inflammatory disease ... Urethral stricture/valves ... /phimosis #Diagnosis ... #Differential #Nephrology
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
> 125mOsm/kg, Lactose ... hydrogen breath test ... colonoscopy), Abdominal ... imaging (CT, ultrasound ... testing for celiac disease
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Proves cause-effect ... who test positive ... how related two values ... Biostatistics #formulas ... #calculations #diagnosis
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
And BMP Normal Values ... - Differential Diagnosis ... restrictive lung disease ... Interpretation #Diagnosis ... #Summary #Nephrology
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
activity - A low value ... hallmark for the disease ... If the value is ... low, tests to detect ... elevation Serum lactate
Imaging Modalities for Renal Calculus

AXR. KUB
 - Good far calcium-containing stones useful when limited radiation dose
radiation dose Ultrasound ... of flank or abdominal ... retroperitoneal disease ... MRI - Limited value ... for non-calculus causes
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
Arboviruses: - West ... Hepatosplenomegaly • The CSF formula ... CSF Lactate: Good ... meningitis • CSF-lactate ... #neurology #meningitis