One tea spoon __________ ml

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2024

Explanation

In medical and pharmaceutical contexts, one standard teaspoon (tsp) is universally defined as being equivalent to 5 milliliters (mL).
This standardization is critical for ensuring accurate and safe dosage of liquid medications, a fundamental concept in pharmacology.
Using household kitchen spoons is strongly discouraged as their volume can vary significantly; calibrated devices like oral syringes or medication cups are essential for safety.
This conversion is a foundational piece of knowledge for medication calculation and administration.

Option A: 1 mL is a much smaller volume than a teaspoon. It is equivalent to about 15-20 drops (gtt).
Option B: 3 mL does not correspond to any standard household measurement. It is an intermediate volume that would require a calibrated syringe for accuracy.
Option D: 7 mL is larger than a standard teaspoon and does not align with any common household unit of measurement. Some kitchen teaspoons might hold this much, which highlights their inaccuracy for medical use.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Conversion of household units (teaspoon) to metric units (mL) for medication administration as background academic context rather than a clinical decision trigger.
Accurate conversion is a critical nursing skill to prevent medication errors, such as underdosing or overdosing, especially in pediatric and geriatric populations where dosage precision is paramount.
Patient education is a key nursing responsibility. Nurses must teach patients and caregivers to use the specific measuring device (oral syringe, calibrated cup) that comes with the medication, and to never use kitchen spoons.
What if? If a patient reports using a 'large' or 'small' kitchen spoon at home, the nurse must intervene. The nurse should explain that kitchen spoons are not accurate and can lead to incorrect dosing, and then provide or recommend a proper calibrated device from a pharmacy.

How to Approach the Question

Identify the core task of the question: It asks for a direct conversion between a household unit (teaspoon) and a metric unit (milliliter).
Recognize this as a factual recall question common in pharmacology and fundamentals of nursing.
Recall the standard medical measurement equivalents. The most common ones to memorize are: 1 teaspoon = 5 mL, 1 tablespoon = 15 mL, and 1 fluid ounce = 30 mL.
Scan the options to find the one that matches the standard conversion factor for a teaspoon.
Select the correct option and mentally eliminate the others as they do not represent the standard medical equivalent.

Concept Tested & Keywords

Concept Tested: Conversion of household units (teaspoon) to metric units (mL) for medication administration.
Stem keywords: tea spoon, ml
Lead-in keywords: BEST, MOST RELEVANT CLUE

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E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 140-142

E6 Nursing Fundamentals Taylor pp. 1059-1061, 848-850

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