Nclexrn Flashcards: Interpreting Lab Values And Diagnostics

What this deck covers

This deck focuses on Interpreting Lab Values And Diagnostics, giving you a quick way to review the definitions, rules, and examples that matter most for Nclexrn.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Identify the acid–base disorder: pH $7.30$, PaCO$2$ $55$ mm Hg, HCO$3^-$ $24$ mEq/L.

Answer: Uncompensated respiratory acidosis. Low pH with high PaCO$_2$ and normal HCO$_3^-$ shows acute CO$_2$ retention without metabolic compensation.

Flashcard 2: What aPTT ratio or range is commonly targeted for therapeutic unfractionated heparin?

Answer: About $1.5$–$2.5\times$ control (institution-specific). This aPTT target ensures effective anticoagulation with heparin, balancing efficacy and safety.

Flashcard 3: What adult fasting blood glucose reference range (mg/dL) is commonly used for NCLEX interpretation?

Answer: $70$–$100$ mg/dL. This range indicates normal fasting blood glucose in adults, reflecting balanced carbohydrate metabolism.

Flashcard 4: What adult hemoglobin reference range (g/dL) is commonly used for males and for females?

Answer: Male $14$–$18$ g/dL; Female $12$–$16$ g/dL. These gender-specific ranges account for physiological differences in oxygen-carrying capacity.

Flashcard 5: What adult WBC reference range ($\times 10^3/\mu\text{L}$) is commonly used for NCLEX interpretation?

Answer: $4.5$–$11.0\times 10^3/\mu\text{L}$. This range reflects normal white blood cell count in adults, essential for immune response.

Flashcard 6: What adult serum magnesium reference range (mEq/L) is commonly used for NCLEX interpretation?

Answer: $1.3$–$2.1$ mEq/L. This range denotes normal serum magnesium levels in adults, important for neuromuscular and cardiovascular stability.

Flashcard 7: What adult estimated GFR value (mL/min/$1.73\,\text{m}^2$) is generally considered normal?

Answer: $\geq 90$ mL/min/$1.73\,\text{m}^2$. This value signifies normal glomerular filtration rate, indicating adequate kidney function adjusted for body surface area.

Flashcard 8: What adult arterial blood pH reference range is used when interpreting ABGs?

Answer: $7.35$–$7.45$. This pH range maintains acid-base homeostasis in arterial blood for optimal cellular function.

Flashcard 9: What adult HCO$3^-$ reference range (mEq/L) is used when interpreting ABGs?

Answer: $22$–$26$ mEq/L. This HCO$_3^-$ range represents normal metabolic buffering capacity in acid-base regulation.

Flashcard 10: What adult PaCO$2$ reference range (mm Hg) is used when interpreting ABGs?

Answer: $35$–$45$ mm Hg. This PaCO$_2$ range reflects normal respiratory contribution to acid-base balance.

Flashcard 11: What adult platelet reference range ($\times 10^3/\mu\text{L}$) is commonly used for NCLEX interpretation?

Answer: $150$–$400\times 10^3/\mu\text{L}$. This range indicates normal platelet count in adults, critical for hemostasis and clotting.

Flashcard 12: What adult serum phosphate (phosphorus) reference range (mg/dL) is commonly used for NCLEX?

Answer: $2.5$–$4.5$ mg/dL. This range signifies normal serum phosphate levels in adults, key for energy metabolism and bone formation.

Flashcard 13: Identify the acid–base disorder: pH $7.50$, PaCO$2$ $30$ mm Hg, HCO$3^-$ $24$ mEq/L.

Answer: Uncompensated respiratory alkalosis. High pH with low PaCO$_2$ and normal HCO$_3^-$ indicates acute hyperventilation without metabolic adjustment.

Flashcard 14: What serum potassium value (mEq/L) is a common threshold for holding digoxin and notifying the provider?

Answer: $< 3.5$ mEq/L (hypokalemia increases digoxin toxicity risk). Hypokalemia potentiates digoxin toxicity by enhancing cardiac binding and arrhythmia risk.

Flashcard 15: Identify the acid–base disorder: pH $7.30$, PaCO$2$ $40$ mm Hg, HCO$3^-$ $18$ mEq/L.

Answer: Uncompensated metabolic acidosis. Low pH with normal PaCO$_2$ and low HCO$_3^-$ reflects acute acid accumulation without respiratory compensation.

Flashcard 16: Identify the acid–base disorder: pH $7.50$, PaCO$2$ $40$ mm Hg, HCO$3^-$ $30$ mEq/L.

Answer: Uncompensated metabolic alkalosis. High pH with normal PaCO$_2$ and high HCO$_3^-$ signifies acute base excess without respiratory response.

Flashcard 17: What adult INR therapeutic range is typical for warfarin anticoagulation (most indications)?

Answer: $2.0$–$3.0$. This therapeutic INR range prevents thrombosis while minimizing bleeding risk in warfarin therapy.

Flashcard 18: What adult serum potassium reference range (mEq/L) is commonly used for NCLEX interpretation?

Answer: $3.5$–$5.0$ mEq/L. This range indicates normal serum potassium levels in adults, vital for cardiac and muscle function.

Flashcard 19: What adult BUN reference range (mg/dL) is commonly used for NCLEX interpretation?

Answer: $10$–$20$ mg/dL. This range indicates normal blood urea nitrogen in adults, assessing kidney function and hydration status.

Flashcard 20: What adult serum calcium reference range (mg/dL) is commonly used for NCLEX interpretation?

Answer: $8.5$–$10.5$ mg/dL. This range represents normal total serum calcium in adults, essential for bone health, muscle contraction, and nerve signaling.

Flashcard 21: What adult hemoglobin A$1$c diagnostic threshold indicates diabetes mellitus?

Answer: $\geq 6.5\%$. This threshold diagnoses diabetes based on average blood glucose over 2-3 months.

Flashcard 22: What adult PaO$2$ reference range (mm Hg) is commonly used for ABG interpretation?

Answer: $80$–$100$ mm Hg. This PaO$_2$ range ensures adequate arterial oxygenation for tissue perfusion in healthy adults.

Flashcard 23: What adult serum sodium reference range (mEq/L) is commonly used for NCLEX interpretation?

Answer: $135$–$145$ mEq/L. This range reflects normal serum sodium levels in adults, crucial for maintaining osmotic balance and neurological function.

Flashcard 24: What adult serum creatinine reference range (mg/dL) is commonly used for NCLEX interpretation?

Answer: $0.6$–$1.3$ mg/dL. This range reflects normal serum creatinine in adults, a marker of renal filtration function.

Flashcard 25: What oxygen saturation (SpO$2$) percentage is typically considered acceptable in a healthy adult?

Answer: $95\%$–$100\%$. This SpO$_2$ range indicates sufficient hemoglobin oxygenation for normal respiratory function.