29 results
Schematic representation of the major sources of ammonia production and its excretory pathway (GI = gastrointestinal,
although hepatic causes ... namely, the many causes ... - Inherited Urea ... of ammonia: - Urease ... deficiency #Ammonia #Pathophysiology
Lower Urinary Tract Infections: Complications
 - Infection damages the urinary tract epithelium causing fibroblast proliferation and
Prostatitis - Urease-producing ... Klebsiella) degrade urea ... which may cause ... UrinaryTractInfection #LUTI #Pathophysiology
Chronic Hypertensive Retinopathy: Pathogenesis and clinical findings

Ophthalmic Artery Hypertension
Stage 1: Mild/vasoconstrictive
 • Acute and chronic vasospasm
hyalinization causes ... white or yellow areas ... around atrophic areas ... #Retinopathy #pathophysiology ... #ophthalmology
Proptosis - Differential Diagnosis - Unilateral vs Bilateral
Unilateral:
 • Infections (can become bilateral with cavernous sinus
- Metastatic (breast ... Unilateral #Bilateral #Causes ... #ophthalmology
Anisocoria - Pupillary Defects - Differential Diagnosis Algorithm

Physiological - Simple Anisocoria ( <O.5mm)
 - Anisocoria equal
• Tumor (Lung, Breast ... Diagnosis #Algorithm #Causes ... #Ophthalmology
Diabetic Retinopathy: Pathogenesis and clinical findings

Mild Non-proliferative DR
 • Outpouchings of the weakened capillary walls or
Hemorrhages • Focal areas ... retinal ischemia causes ... Retinopathy #Diabetes #ophthalmology ... complications #pathophysiology
Palpable Skin Crepitus on Physical Exam

Notice these air bubbles under the skin. An 86-year-old woman with
sudden-onset shortness of breath ... neck (shown in video ... and spaces can cause ... travels from these areas ... in subcutaneous areas
Mastoiditis: Pathogenesis and clinical findings

Acute or Chronic Otitis Media -> 
Stage 1: Hyperemeia of the mastoid
into contiguous areas ... postauricular crease ... hearing loss, nausea ... #Mastoiditis #pathophysiology
Adhesive Capsulitis (Frozen Shoulder) - Pathogenesis and Clinical Findings

 • Primary (Idiopathic): Unknown etiology, but associated
a stroke that caused ... recovery after breast ... will eventually break ... FrozenShoulder #pathophysiology
Brudzinski’s Sign in Meningitis (first described in 19th century by Dr. Josef Brudzinski)

Brudzinski's sign is characterized
Passive neck flexion causes ... While the pathophysiology ... involuntary reflex to create ... Video by Dr. ... Meningitis #Clinical #Video