Interpreting Lab Values And Diagnostics - NCLEX-RN
Card 1 of 25
Identify the acid–base disorder: pH $7.30$, PaCO$2$ $40$ mm Hg, HCO$3^-$ $18$ mEq/L.
Identify the acid–base disorder: pH $7.30$, PaCO$2$ $40$ mm Hg, HCO$3^-$ $18$ mEq/L.
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Uncompensated metabolic acidosis. Low pH with normal PaCO$_2$ and low HCO$_3^-$ reflects acute acid accumulation without respiratory compensation.
Uncompensated metabolic acidosis. Low pH with normal PaCO$_2$ and low HCO$_3^-$ reflects acute acid accumulation without respiratory compensation.
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Identify the acid–base disorder: pH $7.50$, PaCO$2$ $30$ mm Hg, HCO$3^-$ $24$ mEq/L.
Identify the acid–base disorder: pH $7.50$, PaCO$2$ $30$ mm Hg, HCO$3^-$ $24$ mEq/L.
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Uncompensated respiratory alkalosis. High pH with low PaCO$_2$ and normal HCO$_3^-$ indicates acute hyperventilation without metabolic adjustment.
Uncompensated respiratory alkalosis. High pH with low PaCO$_2$ and normal HCO$_3^-$ indicates acute hyperventilation without metabolic adjustment.
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Identify the acid–base disorder: pH $7.30$, PaCO$2$ $55$ mm Hg, HCO$3^-$ $24$ mEq/L.
Identify the acid–base disorder: pH $7.30$, PaCO$2$ $55$ mm Hg, HCO$3^-$ $24$ mEq/L.
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Uncompensated respiratory acidosis. Low pH with high PaCO$_2$ and normal HCO$_3^-$ shows acute CO$_2$ retention without metabolic compensation.
Uncompensated respiratory acidosis. Low pH with high PaCO$_2$ and normal HCO$_3^-$ shows acute CO$_2$ retention without metabolic compensation.
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What aPTT ratio or range is commonly targeted for therapeutic unfractionated heparin?
What aPTT ratio or range is commonly targeted for therapeutic unfractionated heparin?
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About $1.5$–$2.5\times$ control (institution-specific). This aPTT target ensures effective anticoagulation with heparin, balancing efficacy and safety.
About $1.5$–$2.5\times$ control (institution-specific). This aPTT target ensures effective anticoagulation with heparin, balancing efficacy and safety.
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What adult INR therapeutic range is typical for warfarin anticoagulation (most indications)?
What adult INR therapeutic range is typical for warfarin anticoagulation (most indications)?
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$2.0$–$3.0$. This therapeutic INR range prevents thrombosis while minimizing bleeding risk in warfarin therapy.
$2.0$–$3.0$. This therapeutic INR range prevents thrombosis while minimizing bleeding risk in warfarin therapy.
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What adult hemoglobin reference range (g/dL) is commonly used for males and for females?
What adult hemoglobin reference range (g/dL) is commonly used for males and for females?
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Male $14$–$18$ g/dL; Female $12$–$16$ g/dL. These gender-specific ranges account for physiological differences in oxygen-carrying capacity.
Male $14$–$18$ g/dL; Female $12$–$16$ g/dL. These gender-specific ranges account for physiological differences in oxygen-carrying capacity.
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What adult platelet reference range ($\times 10^3/\mu\text{L}$) is commonly used for NCLEX interpretation?
What adult platelet reference range ($\times 10^3/\mu\text{L}$) is commonly used for NCLEX interpretation?
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$150$–$400\times 10^3/\mu\text{L}$. This range indicates normal platelet count in adults, critical for hemostasis and clotting.
$150$–$400\times 10^3/\mu\text{L}$. This range indicates normal platelet count in adults, critical for hemostasis and clotting.
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What adult WBC reference range ($\times 10^3/\mu\text{L}$) is commonly used for NCLEX interpretation?
What adult WBC reference range ($\times 10^3/\mu\text{L}$) is commonly used for NCLEX interpretation?
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$4.5$–$11.0\times 10^3/\mu\text{L}$. This range reflects normal white blood cell count in adults, essential for immune response.
$4.5$–$11.0\times 10^3/\mu\text{L}$. This range reflects normal white blood cell count in adults, essential for immune response.
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What oxygen saturation (SpO$2$) percentage is typically considered acceptable in a healthy adult?
What oxygen saturation (SpO$2$) percentage is typically considered acceptable in a healthy adult?
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$95%$–$100%$. This SpO$_2$ range indicates sufficient hemoglobin oxygenation for normal respiratory function.
$95%$–$100%$. This SpO$_2$ range indicates sufficient hemoglobin oxygenation for normal respiratory function.
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What adult PaO$2$ reference range (mm Hg) is commonly used for ABG interpretation?
What adult PaO$2$ reference range (mm Hg) is commonly used for ABG interpretation?
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$80$–$100$ mm Hg. This PaO$_2$ range ensures adequate arterial oxygenation for tissue perfusion in healthy adults.
$80$–$100$ mm Hg. This PaO$_2$ range ensures adequate arterial oxygenation for tissue perfusion in healthy adults.
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What adult PaCO$2$ reference range (mm Hg) is used when interpreting ABGs?
What adult PaCO$2$ reference range (mm Hg) is used when interpreting ABGs?
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$35$–$45$ mm Hg. This PaCO$_2$ range reflects normal respiratory contribution to acid-base balance.
$35$–$45$ mm Hg. This PaCO$_2$ range reflects normal respiratory contribution to acid-base balance.
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What adult arterial blood pH reference range is used when interpreting ABGs?
What adult arterial blood pH reference range is used when interpreting ABGs?
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$7.35$–$7.45$. This pH range maintains acid-base homeostasis in arterial blood for optimal cellular function.
$7.35$–$7.45$. This pH range maintains acid-base homeostasis in arterial blood for optimal cellular function.
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What adult estimated GFR value (mL/min/$1.73,\text{m}^2$) is generally considered normal?
What adult estimated GFR value (mL/min/$1.73,\text{m}^2$) is generally considered normal?
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$\geq 90$ mL/min/$1.73,\text{m}^2$. This value signifies normal glomerular filtration rate, indicating adequate kidney function adjusted for body surface area.
$\geq 90$ mL/min/$1.73,\text{m}^2$. This value signifies normal glomerular filtration rate, indicating adequate kidney function adjusted for body surface area.
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What adult HCO$3^-$ reference range (mEq/L) is used when interpreting ABGs?
What adult HCO$3^-$ reference range (mEq/L) is used when interpreting ABGs?
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$22$–$26$ mEq/L. This HCO$_3^-$ range represents normal metabolic buffering capacity in acid-base regulation.
$22$–$26$ mEq/L. This HCO$_3^-$ range represents normal metabolic buffering capacity in acid-base regulation.
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What serum potassium value (mEq/L) is a common threshold for holding digoxin and notifying the provider?
What serum potassium value (mEq/L) is a common threshold for holding digoxin and notifying the provider?
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$< 3.5$ mEq/L (hypokalemia increases digoxin toxicity risk). Hypokalemia potentiates digoxin toxicity by enhancing cardiac binding and arrhythmia risk.
$< 3.5$ mEq/L (hypokalemia increases digoxin toxicity risk). Hypokalemia potentiates digoxin toxicity by enhancing cardiac binding and arrhythmia risk.
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Identify the acid–base disorder: pH $7.50$, PaCO$2$ $40$ mm Hg, HCO$3^-$ $30$ mEq/L.
Identify the acid–base disorder: pH $7.50$, PaCO$2$ $40$ mm Hg, HCO$3^-$ $30$ mEq/L.
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Uncompensated metabolic alkalosis. High pH with normal PaCO$_2$ and high HCO$_3^-$ signifies acute base excess without respiratory response.
Uncompensated metabolic alkalosis. High pH with normal PaCO$_2$ and high HCO$_3^-$ signifies acute base excess without respiratory response.
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What adult BUN reference range (mg/dL) is commonly used for NCLEX interpretation?
What adult BUN reference range (mg/dL) is commonly used for NCLEX interpretation?
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$10$–$20$ mg/dL. This range indicates normal blood urea nitrogen in adults, assessing kidney function and hydration status.
$10$–$20$ mg/dL. This range indicates normal blood urea nitrogen in adults, assessing kidney function and hydration status.
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What adult serum creatinine reference range (mg/dL) is commonly used for NCLEX interpretation?
What adult serum creatinine reference range (mg/dL) is commonly used for NCLEX interpretation?
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$0.6$–$1.3$ mg/dL. This range reflects normal serum creatinine in adults, a marker of renal filtration function.
$0.6$–$1.3$ mg/dL. This range reflects normal serum creatinine in adults, a marker of renal filtration function.
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What adult serum sodium reference range (mEq/L) is commonly used for NCLEX interpretation?
What adult serum sodium reference range (mEq/L) is commonly used for NCLEX interpretation?
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$135$–$145$ mEq/L. This range reflects normal serum sodium levels in adults, crucial for maintaining osmotic balance and neurological function.
$135$–$145$ mEq/L. This range reflects normal serum sodium levels in adults, crucial for maintaining osmotic balance and neurological function.
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What adult hemoglobin A$1$c diagnostic threshold indicates diabetes mellitus?
What adult hemoglobin A$1$c diagnostic threshold indicates diabetes mellitus?
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$\geq 6.5%$. This threshold diagnoses diabetes based on average blood glucose over 2-3 months.
$\geq 6.5%$. This threshold diagnoses diabetes based on average blood glucose over 2-3 months.
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What adult fasting blood glucose reference range (mg/dL) is commonly used for NCLEX interpretation?
What adult fasting blood glucose reference range (mg/dL) is commonly used for NCLEX interpretation?
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$70$–$100$ mg/dL. This range indicates normal fasting blood glucose in adults, reflecting balanced carbohydrate metabolism.
$70$–$100$ mg/dL. This range indicates normal fasting blood glucose in adults, reflecting balanced carbohydrate metabolism.
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What adult serum phosphate (phosphorus) reference range (mg/dL) is commonly used for NCLEX?
What adult serum phosphate (phosphorus) reference range (mg/dL) is commonly used for NCLEX?
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$2.5$–$4.5$ mg/dL. This range signifies normal serum phosphate levels in adults, key for energy metabolism and bone formation.
$2.5$–$4.5$ mg/dL. This range signifies normal serum phosphate levels in adults, key for energy metabolism and bone formation.
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What adult serum magnesium reference range (mEq/L) is commonly used for NCLEX interpretation?
What adult serum magnesium reference range (mEq/L) is commonly used for NCLEX interpretation?
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$1.3$–$2.1$ mEq/L. This range denotes normal serum magnesium levels in adults, important for neuromuscular and cardiovascular stability.
$1.3$–$2.1$ mEq/L. This range denotes normal serum magnesium levels in adults, important for neuromuscular and cardiovascular stability.
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What adult serum calcium reference range (mg/dL) is commonly used for NCLEX interpretation?
What adult serum calcium reference range (mg/dL) is commonly used for NCLEX interpretation?
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$8.5$–$10.5$ mg/dL. This range represents normal total serum calcium in adults, essential for bone health, muscle contraction, and nerve signaling.
$8.5$–$10.5$ mg/dL. This range represents normal total serum calcium in adults, essential for bone health, muscle contraction, and nerve signaling.
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What adult serum potassium reference range (mEq/L) is commonly used for NCLEX interpretation?
What adult serum potassium reference range (mEq/L) is commonly used for NCLEX interpretation?
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$3.5$–$5.0$ mEq/L. This range indicates normal serum potassium levels in adults, vital for cardiac and muscle function.
$3.5$–$5.0$ mEq/L. This range indicates normal serum potassium levels in adults, vital for cardiac and muscle function.
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