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Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Equina Syndrome - Low ... saddle (perineal) anesthesia ... Commonly caused ... Dermatomes #Myotomes #diagnosis ... #motor #leg #physicalexam
Hyperkalemia - Diagnosis and Management - GrepMed Handbook

S/Sx: Most pts asymptomatic. Weakness, cramping, nausea, paresthesias, palpitations,
reabsorption) Workup ... only if no clear cause ... Elimination (see Table ... acidosis) • Low ... Treatment #potassium #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... Urine Na+K / serum ... #differential #diagnosis ... #table #sodium ... #nephrology
Summary of Oncologic Emergencies

Neutropenic fever:
- Fever + ANC < 500 → start cefepime ± vancomycin (if
syndrome): - Hematologic ... changes: high K, ... Treat underlying cause ... opacities, SOB, pleural ... Oncology #HemeOnc #Diagnosis