Serum Osmolality - What Is the Osmolarity of Your Plasma?

This lecture explains serum osmolality and its distinction from osmolarity, including measured versus calculated values and the osmolality gap. It relates plasma tonicity to glucose, sodium, water efflux, dehydration, volume depletion, and ADH-related conditions.

Syllabus

Intro
Types of Osmolality
How to measure Serum Osmolality
Why do I care
Water efflux
Osmolality vs Osmolarity
Which is more accurate
Dehydration vs volume depletion
Osmolality vs Tonicity
Quiz Time
What is Osmolality
Measured vs Calculated Osmolality
Glucose vs Sodium
Remote plasma tunicity
Effective osmo solutions
Osmolality gap
What is measured Osmolality
Mnemonics
What is a smaller gap
Question
Acidbase Course
Hypertonicity
Desmopressin
Hypotonicity
Drug to inhibit ADH
What is the main stimulant
Dehydration
Levels of Consciousness
Question of the Day
Learn More
Discount Code
Outro