A. Incorrect. Pulling the child's earlobe down and back is a technique used for straightening the ear canal in older children and adults, not for using a tympanic thermometer.

B. Correct. When using a tympanic thermometer, it's important to gently insert the probe into the ear canal and ensure a proper seal. This helps to obtain an accurate temperature reading.

C. Incorrect. Holding the thermometer in place for 1-2 minutes is not the correct technique for tympanic temperature measurement. It may lead to an inaccurate reading.

D. Incorrect. Using an oral thermometer for a 2-year-old child is not the recommended method, as it may not provide an accurate temperature reading.

A. Incorrect. A cuff that covers only 50% of the upper arm circumference may be too small and lead to falsely elevated blood pressure readings.

B. Correct. Selecting a cuff that covers approximately 75% of the upper arm circumference is recommended for accurate blood pressure measurement in children. This ensures proper fit and accurate readings.

C. Incorrect. Using a cuff that covers 100% of the upper arm circumference may be too large, resulting in falsely low blood pressure readings.

D. Incorrect. A cuff that covers 125% of the upper arm circumference is overly large and not appropriate for accurate blood pressure measurement.

A. Correct. Placing the hand on the infant's abdomen allows the nurse to feel the rise and fall with each breath, providing an accurate count of respiratory rate.

B. Incorrect. Counting respirations while the infant is sleeping may be challenging and may not provide an accurate assessment.

C. Incorrect. While visually observing chest movement can be helpful, this method may not be as accurate as feeling the actual movement with the hand.

D. Incorrect. Using a stethoscope to listen for breath sounds is not the recommended method for measuring respiratory rate in infants.

A. Incorrect. Palpating the brachial artery is not the recommended method for measuring the apical pulse.

B. Correct. Measuring the apical pulse with a stethoscope over the apex of the heart allows for accurate assessment of the heart rate in infants.

C. Incorrect. Using the radial pulse is not the appropriate method for measuring the apical pulse in infants.

D. Incorrect. Counting the pulse at the carotid artery is not the recommended method for assessing the apical pulse in infants.

A. Incorrect. Weighing the child while wearing clothes may lead to an inaccurate measurement. It's best to weigh the child without excess clothing.

B. Incorrect. Using a bathroom scale designed for adults is not suitable for accurately measuring a toddler's weight.

C. Correct. Using a flat, stable surface for weighing ensures accuracy in measurement.

D. Incorrect. Allowing the child to hold onto a toy during the measurement may introduce additional variables that could affect the accuracy of the weight measurement.

A. Correct. Having the child stand against a wall and marking their height with a pen provides an accurate measurement of height in children who are able to stand.

B. Incorrect. Instructing the child to lie down on the examination table is not the appropriate method for measuring height in a standing child.

C. Incorrect. Using a tape measure to measure the distance from head to toe is not as accurate as having the child stand against a wall for measurement.

D. Incorrect. Estimating height based on age and weight is not a reliable method for obtaining an accurate measurement.

A. Correct. Using the index and middle fingers to palpate the pulse provides a more accurate assessment of the radial pulse.

B. Incorrect. Using the thumb to apply pressure to the radial artery can inadvertently compress the artery, leading to an inaccurate pulse reading.

C. Incorrect. Applying strong pressure may interfere with the pulse assessment and is not necessary for detecting the pulse rhythm.

D. Incorrect. Counting the pulse for 10 seconds and multiplying by 6 is a valid method, but using the index and middle fingers for palpation is preferred for accuracy.

A. Incorrect. Counting respirations immediately after eating may not provide an accurate measurement, as activity or digestion can influence respiratory rate.

B. Correct. Observing chest movement for a full minute allows for an accurate assessment of respiratory rate in children.

C. Incorrect. While using a stopwatch may be helpful, it is not necessary to ensure an accurate respiratory rate measurement in this context.

D. Incorrect. Asking the child to take deep breaths may not reflect their natural respiratory rate and could lead to an inaccurate assessment.