23 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Workup Step 1 ... Repeat the sodium ... administration Step 3. ... • nephrotic syndrome ... Workup #Algorithm #Nephrology
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Workup Algorithm 1) ... Hypervolemic: Conn syndrome ... , Cushing syndrome ... Workup #Algorithm #nephrology ... #sodium
Cerebral Salt Wasting vs SIADH - Pathophysiology 
1) Neurological event
2) Sodium loss from tubules
3) Naturiesis →
Pathophysiology 1) ... Neurological event 2) Sodium ... from tubules 3) ... #hyponatremia # ... comparison
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
output is a clue). 1) ... post-obstructive 3) ... Diabetes Insipidus: neurogenic ... ([Na] / 140) - 1) ... #sodium
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
- Spinal Cord Syndromes ... result in permanent neurologic ... sensation usually 1 ... involved) - Tendon reflex ... in deep tendon reflexes
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
is usually caused ... 1) Is it hypotonic ... demyelination syndrome ... Treatment #management #nephrology ... #sodium
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
time you have a case ... +K / serum Na >1 ... : SIADH, Renal Sodium ... Cirrhosis, Nephrotic syndrome ... #nephrology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
• Prevalence: 1: ... - Emergency Causes ... Diagnosis: • Spinal cord ... spondylitis • Tethered cord ... #neurology
Orthopedic Emergencies
Compartment Syndrome
 • An increase in compartment pressure to the point where tissue perfusion is
Syndrome caused ... appear in 1-2 days ... • Management: 1. ... resuscitation 3. ... Spinal shock vs Neurogenic
Heat Illnesses and Heat Stroke - Differential Diagnosis Framework

Heat Cramps:
 • Muscle pain or spasm -
Dehydration - Loss of sodium ... conditions - Neurogenic ... heat illness → Hypernatremia ... Multi-system illness: 1. ... , ARDS, DIC) 3.