16 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... Commonly caused ... compression • Spinal Stenosis ... #LowerLimb #Extremity ... sensory #motor #leg #physicalexam
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Bone/Joint Causes ... etc) • Spinal stenosis ... cyanosis - Cool extremity ... diagnosis #lower #extremity ... #msk #physicalexam
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Erb's Palsy is caused ... Dislocation - May cause ... #UpperLimb #Extremity ... sensory #motor #arm #physicalexam
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
Causes of Chronic ... • Renal artery stenosis ... Family history, ultrasound ... Sterile pyuria, WBC casts ... Diagnosis #Algorithm #Causes
Stridor - Differential Diagnosis Framework:
High-pitched, variable respiratory sound

ETIOLOGIES:
Infectious:
 • Retropharyngeal abscess
 • Acute epiglottitis
 • Peritonsillar
• Subglottic stenosis ... tracheitis • Tracheal stenosis ... • Subglottic stenosis ... differential #diagnosis #causes ... pulmonary #airway #physicalexam
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
- Emergency Causes ... Multilevel lumbar stenosis ... unilateral lower extremity ... or absent lower extremity ... differential #diagnosis #causes
Kussmaul's sign in Constrictive Pericarditis 

A 50-year-old woman with a remote history of mediastinal lymphoma (age
Causes = RV failure ... pericarditis (this case ... and tricuspid stenosis ... Kussmauls #Sign #PhysicalExam
Chronic SVC Stenosis with Caudal Blood Flow of Dilated Abdominal Veins

60 y/o hx of seizures &
Chronic SVC Stenosis ... What is the cause ... showed chronic stenosis ... SVC #syndrome #Stenosis ... #Video #Chest #PhysicalExam
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... • Abdominal ultrasound ... Diagnosis #Algorithm #Causes ... #dermatology #physicalexam
Kussmaul's Sign - Differential Diagnosis

Typically the JVP decreases with inspiration as the negative intrathoracic pressure "sucks
PE, tricuspid stenosis ... Kussmauls #Sign #physicalexam ... #differential #causes