Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
What is the primary purpose of using conversion factors in dimensional analysis?
A. To ensure the medication is safe for the patient
To ensure the medication is safe for the patient: Safety is the overarching goal, but conversion factors specifically address unit accuracy rather than directly ensuring patient safety.
B. To determine the dosage strength of a medication
To determine the dosage strength of a medication: Dosage strength is usually provided on the label and is not calculated using conversion factors; the factors help adjust quantities between units.
C. To convert between units of measurement accurately
To convert between units of measurement accurately: Conversion factors allow precise transformation from one unit to another (e.g., mg to g, mL to L), which is essential in dimensional analysis to ensure the correct dose is calculated and administered.
D. To simplify complex calculations
To simplify complex calculations: While they may make calculations more systematic, the primary purpose of conversion factors is accuracy in unit conversion, not simplification alone.
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Full Explanation
Rationale:
A. To ensure the medication is safe for the patient: Safety is the overarching goal, but conversion factors specifically address unit accuracy rather than directly ensuring patient safety.
B. To determine the dosage strength of a medication: Dosage strength is usually provided on the label and is not calculated using conversion factors; the factors help adjust quantities between units.
C. To convert between units of measurement accurately: Conversion factors allow precise transformation from one unit to another (e.g., mg to g, mL to L), which is essential in dimensional analysis to ensure the correct dose is calculated and administered.
D. To simplify complex calculations: While they may make calculations more systematic, the primary purpose of conversion factors is accuracy in unit conversion, not simplification alone.
Similar Questions
Why is the generic name important on a drug label?
A. It helps in identifying the active ingredient across different brands.
It helps in identifying the active ingredient across different brands: The generic name identifies the drug’s active chemical component, allowing healthcare providers to recognize the medication regardless of brand names. This ensures consistency in prescribing, dispensing, and patient education.
B. It provides instructions for drug storage.
It provides instructions for drug storage: Storage instructions are listed separately and relate to maintaining drug stability, not to identifying the active ingredient.
C. It lists the drug's potential side effects.
It lists the drug's potential side effects: Side effects are typically included in the patient information leaflet, not in the generic name section of the label.
D. It indicates the drug's, therapeutic effects.
It indicates the drug's therapeutic effects: While the generic name identifies the active ingredient, it does not specify the exact therapeutic effects; indications or drug class provide that information.
Full Explanation
Rationale:
A. It helps in identifying the active ingredient across different brands: The generic name identifies the drug’s active chemical component, allowing healthcare providers to recognize the medication regardless of brand names. This ensures consistency in prescribing, dispensing, and patient education.
B. It provides instructions for drug storage: Storage instructions are listed separately and relate to maintaining drug stability, not to identifying the active ingredient.
C. It lists the drug's potential side effects: Side effects are typically included in the patient information leaflet, not in the generic name section of the label.
D. It indicates the drug's therapeutic effects: While the generic name identifies the active ingredient, it does not specify the exact therapeutic effects; indications or drug class provide that information.
A prescription requires 300 mg to be given, but the concentration available is 150 mg/mL. How many mL should be administered?
A. 4 mL
Calculation: Ordered Dose = 300 mg Available Dose = 150 mg Available Volume = 1 mL Volume to administer = (Ordered Dose / Available Dose) × Available Volume = (300 / 150) × 1 = 2 × 1 = 2 mL
B. 3 mL
Calculation: Ordered Dose = 300 mg Available Dose = 150 mg Available Volume = 1 mL Volume to administer = (Ordered Dose / Available Dose) × Available Volume = (300 / 150) × 1 = 2 × 1 = 2 mL
C. 1 mL
Calculation: Ordered Dose = 300 mg Available Dose = 150 mg Available Volume = 1 mL Volume to administer = (Ordered Dose / Available Dose) × Available Volume = (300 / 150) × 1 = 2 × 1 = 2 mL
D. 2 mL
Calculation: Ordered Dose = 300 mg Available Dose = 150 mg Available Volume = 1 mL Volume to administer = (Ordered Dose / Available Dose) × Available Volume = (300 / 150) × 1 = 2 × 1 = 2 mL
Full Explanation
Calculation:
Ordered Dose = 300 mg
Available Dose = 150 mg
Available Volume = 1 mL
Volume to administer = (Ordered Dose / Available Dose) × Available Volume
= (300 / 150) × 1
= 2 × 1
= 2 mL
A patient is prescribed a time-critical medication to be administered orally at 8:00 AM. When should the nurse administer the medication?
A. Between 6:00 AM and 10:00 AM.
Between 6:00 AM and 10:00 AM: This window is too wide for time-critical medications, which require tighter administration to maintain therapeutic levels and avoid adverse effects.
B. At any time during the morning shift
At any time during the morning shift: Administering at any time during the shift does not meet the strict timing requirements for time-critical medications and can compromise effectiveness.
C. Between 7:30 AM and 8:30 AM.
Between 7:30 AM and 8:30 AM: Time-critical medications are typically allowed a 30-minute window before or after the scheduled time. Administering within this window ensures the medication maintains therapeutic efficacy while providing a practical margin for nursing workflow.
D. At 8:00 AM exactly.
At 8:00 AM exactly: While ideal, strict exact timing is often impractical; the accepted 30-minute window provides flexibility without compromising therapeutic effect.
Full Explanation
Rationale:
A. Between 6:00 AM and 10:00 AM: This window is too wide for time-critical medications, which require tighter administration to maintain therapeutic levels and avoid adverse effects.
B. At any time during the morning shift: Administering at any time during the shift does not meet the strict timing requirements for time-critical medications and can compromise effectiveness.
C. Between 7:30 AM and 8:30 AM: Time-critical medications are typically allowed a 30-minute window before or after the scheduled time. Administering within this window ensures the medication maintains therapeutic efficacy while providing a practical margin for nursing workflow.
D. At 8:00 AM exactly: While ideal, strict exact timing is often impractical; the accepted 30-minute window provides flexibility without compromising therapeutic effect.