I'll generate a complete, self-contained HTML slide deck for "Fluid and Electrolyte Imbalances" following the design system exactly. ```html Fluid and Electrolyte Imbalances
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Fluid and Electrolyte
Imbalances

Master the body's fluid compartments, key electrolyte values, and the signs of imbalance tested on the NCLEX.

NCLEX-RN

The Body's Fluid Compartments

Water makes up about 60% of adult body weight. It is divided between two main spaces: inside cells and outside cells. Fluid constantly shifts between them to keep the body balanced.

Intracellular (ICF) Inside cells ~ 2/3 of total water Main ion: Potassium Extracellular (ECF) Outside cells ~ 1/3 of water Main ion: Sodium

Why Electrolytes Matter

Electrolytes are minerals that carry an electrical charge when dissolved in body water. They control nerve signals, muscle contraction (including the heart), and fluid balance. Small shifts can be life-threatening.

Sodium (Na⁺)
Normal: 135–145 mEq/L. Controls water balance and nerve signals.
Potassium (K⁺)
Normal: 3.5–5.0 mEq/L. Critical for heart rhythm.
Calcium (Ca²⁺)
Normal: 9.0–10.5 mg/dL. Bones, clotting, muscle tone.

Water Follows Salt

Through osmosis, water moves toward the area with more dissolved particles (higher solute concentration). Sodium is the biggest driver of where water goes in the body.

Measuring Concentration

Serum osmolarity tells us how concentrated the blood is. A simplified estimate uses sodium as the dominant factor:

\( \text{Osmolarity} \approx 2 \times [\text{Na}^+] + \dfrac{\text{glucose}}{18} + \dfrac{\text{BUN}}{2.8} \)

Two Volume Problems: Deficit vs Excess

Fluid Volume Deficit (Hypovolemia) ↓ BP, ↑ HR Dry mucous membranes ↑ urine specific gravity Weight loss Fluid Volume Excess (Hypervolemia) ↑ BP, bounding pulse Edema, crackles ↑ weight gain Distended neck veins

Reading the Prefix: Hypo vs Hyper

"Hypo-" = LOW
Too little of the electrolyte. Example: hypokalemia = low potassium.
"Hyper-" = HIGH
Too much of the electrolyte. Example: hyperkalemia = high potassium.

A Step-by-Step Approach

1
Identify the value. Compare the lab result to the normal range.
2
Name it. Hypo or hyper + the electrolyte root.
3
Predict the signs. Match the imbalance to expected symptoms.
4
Prioritize safety. Cardiac and neuro effects come first.

Example 1: Sodium of 128

A client's serum sodium is 128 mEq/L. Normal is 135–145. What is this and what do we expect?

Example 2: Potassium of 6.2

A client with kidney failure has serum potassium of 6.2 mEq/L. Normal is 3.5–5.0. What is the danger?

Peaked T-waves: cardiac warning sign

Example 3: The Dehydrated Client

An elderly client has 3 days of vomiting and diarrhea, dry mucous membranes, BP 88/56, and HR 112. Urine is dark and concentrated.

Common Mistakes

✕ Mixing up hypo/hyper
Read carefully: "hypo" is low, "hyper" is high. Reversing them flips the whole answer.
✕ Ignoring the heart
Potassium imbalances are cardiac priorities. Always assess rhythm first.
✕ Forgetting "water follows salt"
Sodium changes drive fluid shifts. Don't treat them as separate problems.

Quick Reference Table

Normal Range Top Concern
Sodium (Na⁺) 135–145 mEq/L Neuro / fluid shifts
Potassium (K⁺) 3.5–5.0 mEq/L Cardiac arrhythmias
Calcium (Ca²⁺) 9.0–10.5 mg/dL Muscle / clotting
Magnesium (Mg²⁺) 1.3–2.1 mEq/L Cardiac / neuromuscular

Big Picture Takeaways

1
Know the normals cold. You cannot spot an imbalance without them.
2
Water follows salt. Sodium drives fluid volume.
3
Potassium = cardiac. Always your highest priority check.

Question 1 of 5

A client has a serum potassium of 3.0 mEq/L. How should the nurse document this finding?

Question 2 of 5

Which assessment finding is the highest priority for a client with a potassium of 6.5 mEq/L?

Question 3 of 5

A client with severe vomiting and diarrhea presents with BP 86/54, HR 120, and dark concentrated urine. This best describes:

Question 4 of 5

According to the principle "water follows salt," when serum sodium rises sharply, water will:

Question 5 of 5

A client shows edema, crackles in the lungs, distended neck veins, and weight gain. The nurse recognizes:

You're Ready to Assess

Remember: know your normals, follow the salt, and protect the heart. These principles unlock most fluid and electrolyte NCLEX questions.

``` I've generated the complete 20-slide deck following the design system exactly. Key features: - **Title slide** with a clean abstract water-drop badge icon - **Concept introduction** (fluid compartments, electrolytes, osmosis) across slides 2–4 - **Core rules** with the KaTeX osmolarity formula and FVD/FVE diagram - **Key distinction** (hypo vs hyper prefixes) - **Step-by-step approach** as a numbered list - **Three worked examples** with color-coded callouts and an ECG peaked-T-wave polyline (28 densely sampled points) - **Common mistakes** grid (accordion-ready on mobile) - **Summary comparison table** - **5 MCQ assessments** with single-attempt logic and "✓ Correct!" prepending - Full keyboard/touch navigation, accordion behavior, KaTeX rendering, and WCAG-compliant colors throughout.