23 results
Brudzinski’s Sign in Meningitis (first described in 19th century by Dr. Josef Brudzinski)

Brudzinski's sign is characterized
the knees and hips ... Passive neck flexion causes ... While the pathophysiology ... flexion occurs as ... In very young (less
Acute and Chronic Causes of Dyspnea - Differential Diagnosis
Pulmonary/Chest Wall:
 • Acute: Trauma, COPD exacerbation, Asthma
Acute and Chronic Causes ... Differential Diagnosis Pulmonary ... Neuromuscular disease (eg ... Chronic: Metabolic acidosis ... (eg, DM, renal
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
flow to tissues, also ... stagnant hypoxia (e.g ... carrying capacity (e.g ... cannot use oxygen (e.g ... #pathophysiology
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Elevation, Lactic Acidosis ... by excretion (e.g ... its metabolism (e.g ... output - Acute pulmonary ... Ethylene glycol - HIV
Leukostasis vs Tumor Lysis Syndrome
Leukostasis:
 • Pathophysiology: Large, immature blasts and high WBC count cause hyperviscosity
Leukostasis: • Pathophysiology ... high WBC count cause ... WBC >100k, + lab signs ... Lysis Syndrome: • Pathophysiology ... unless worrisome EKG
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
risk factors (eg ... hypertension (eg ... hypertension (eg ... renal bruit or signs ... Vasculitis • Endocrinologic
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... these patterns are also ... vascular diseases (e.g ... , OP and LIP have ... Diagnosis #Radiology #Pulmonary
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
lateral sclerosis Pathophysiology ... - Causes progressive ... of UMN and LMN signs ... Escorial criteria uses ... EMG: LMN Signs in
Sarcoidosis - Diagnosis and Management Summary
Epidemiology
1) High incidence in Scandinavian countries (11-24 cases per 100,000 individuals
survival is 93-95% Pathophysiology ... symptoms are not caused ... mediators such as ... of diagnosis (e.g ... Diagnosis #Management #Signs
X-Linked Agammaglobulinemia: Pathogenesis and clinical findings
The epidemiology of this disease is 1/340,000 births and roughly double
Signs of immunodeficiency ... Inability to produce all ... humoral immunity Signs ... bacterial infections (e.g ... Agammaglobulinemia #XLinked #pathophysiology