46 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Workup Step 1 ... Repeat the sodium ... Step 2. ... hypothyroidism • adrenal ... Workup #Algorithm #Nephrology
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Causes of Hypernatremia ... perspiration Renal ... insipidus • Nephrogenic ... Differential #Diagnosis #Causes ... #nephrology #sodium
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Workup Algorithm 1) ... mechanism 2) ... insipidus (central or nephrogenic ... Workup #Algorithm #nephrology ... #sodium
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... Workup Step #1 ... history Step #2 ... #Management #Algorithm ... #Sodium #nephrology
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Hyponatremia Differential ... water retention 1) ... Serum Osmolarity 2) ... High Uric Acid → renal ... Diagnosis #Algorithm #nephrology
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
output is a clue). 1) ... water unavailable 2) ... ([Na] / 140) - 1) ... Diagnosis #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 ... Sodium loss (diuretics ... diagnosis #table #sodium ... #nephrology
Hyponatremia - Diagnosis and Treatment
Hyponatremia is usually caused by the inability to excrete water normally.
is usually caused ... 1) Is it hypotonic ... 2) Is ADH elevated ... Diagnosis #Treatment #management ... #nephrology #sodium
Adrenal Insufficiency - Diagnosis and Management Summary
Primary Adrenal Insufficiency:
Most Common Cause in the US: Autoimmune Adrenalitis
Other
Diagnosis and Management ... Summary Primary ... secondary AI, hyponatremia ... PEARLS: 1. ... ACTH STIM TEST: 1.
Vasopressors and Inotropes - Pharmacology Summary
Vasopressors
Phenylephrine (alpha-1)
 • Increases BP, SVR
 • Risk of reflex bradycardia
- Pharmacology Summary ... SVR • Risk of reflex ... • Higher doses cause ... 2 mcg/kg/min): renal ... #management #medications