HESI-P HESI Pharmacology - Set 1 - Part 3

Correct Answer: Vastus lateralis muscle group

The vastus lateralis is the preferred and only safe intramuscular site for an infant at this age because the other muscle groups have not yet developed sufficient mass. Site selection follows muscle development and child size. Option a is incorrect because the ventrogluteal site requires muscle development that an infant does not yet have at four months. The chapter identifies the ventrogluteal as unsafe in infants at this age, with safety improving as the child grows. Option b is incorrect because the lateral deltoid is too small in an infant to accept an intramuscular injection safely without compromising surrounding structures. The chapter classifies this site as unsafe in infants and reserves it for later childhood. Option d is incorrect because the rectus femoris is not the preferred infant site and is classified as unsafe in this age group. Site safety follows muscle development, and infants are directed specifically to the vastus lateralis instead.

Correct Answer: Hundredths with a tuberculin syringe

Pediatric subcutaneous and intramuscular doses are calculated to the nearest hundredth and measured with a tuberculin syringe, which is calibrated finely enough to deliver the precise volume. The chapter ties this rule to the narrow safety margin. Option b is incorrect because tenth-place rounding and standard syringe are the adult rule, not the pediatric rule. The chapter requires finer precision in children because metabolism and elimination are slower in this age group. Option c is incorrect because rounding to the whole number erases the precision the pediatric chapter requires for safety. Any-syringe selection also ignores that only the tuberculin syringe offers fine enough calibration for pediatric subcutaneous and intramuscular dosing. Option d is incorrect because thousandth-place precision exceeds what the chapter directs and surpasses what tuberculin markings can support. Insulin syringes are reserved strictly for insulin doses rather than for general subcutaneous or intramus

Correct Answer: Hundredths place using a tuberculin syringe

Pediatric subcutaneous and intramuscular dose calculations are rounded to the hundredths place and measured in a tuberculin syringe per agency policy. The chapter favors rounding down rather than up for small critical amounts. Option a is incorrect because tenths-place precision belongs to the adult parenteral rule paired with the standard syringe, not to the pediatric rule. The pediatric guidance specifically requires the finer hundredths place because of narrower safety windows. Option b is incorrect because hundreds-place rounding is far too coarse and is not a measurement that any syringe supports. A measuring spoon is also an oral household device, not a parenteral measurement tool for injections. Option c is incorrect because any thousandths-place rounding exceeds the calibration of available syringes, and an insulin syringe is restricted to insulin alone in the chapter. Using it for an unrelated drug is exactly what the chapter forbids.

Correct Answer: Pre- and post-medication saline flush

The normal saline flush given before and after each intermittent intravenous medication must be included in the child's intake because small volumes accumulate quickly across many doses in a small body. The chapter ties this to overhydration risk. Option a is incorrect because bathwater absorption through intact skin is negligible and is not counted in clinical intake. The chapter's flush rule is about delivered intravenous volumes that can be measured precisely and documented, not incidental skin contact. Option c is incorrect because room-air humidity is not a measurable intake source in any standard pediatric documentation. The chapter's overhydration concern is rooted specifically in cumulative intravenous flush volumes across many small doses in a single day. Option d is incorrect because feeding formula water content is captured under enteral intake, which is documented separately as part of feeding records. The chapter highlights the flush because it is easy to ov

Correct Answer: All pediatric IV doses are diluted

Intravenous medications for pediatric clients are diluted for administration as a categorical rule in the chapter. Children do not receive concentrated IV pushes the way adults sometimes do because their narrower safety margins make brief peaks harmful. Option a is incorrect because pushing undiluted is forbidden in the pediatric chapter precisely because peak concentrations are dangerous in a small body. Speed or convenience does not override the dilution rule, even when the dose volume seems modest. Option b is incorrect because pre- and post-medication saline flushes are required at every intermittent dose in every pediatric age group, including toddlers. The chapter does not allow toddler-specific exceptions, since the flush guarantees full medication delivery. Option d is incorrect because infusion pumps are always used in pediatric intravenous medication delivery to control rate accurately. Bypassing the pump removes the safety device that protects against bolus delivery, even du

Correct Answer: Hold, rock, cuddle, allow pacifier

For an infant, the chapter recommends performing the procedure quickly and then offering comfort measures such as holding, rocking, and cuddling, along with self-comforting measures such as the pacifier. This calms the child and supports trust. Option b is incorrect because infants do not yet understand verbal explanations, so an explanation after the procedure offers no developmental benefit. The chapter directs explanation strategies toward older children who can use language for understanding. Option c is incorrect because setting limits on crying and discouraging pacifier use removes the tools the chapter recommends for an infant. Crying is how an infant signals distress, and the pacifier is named explicitly as a self-comforting measure. Option d is incorrect because candy is not appropriate for an infant who does not yet eat solid foods at this developmental stage. The chapter's comfort plan is built around physical contact and self-soothing, not food rewards from later child

Correct Answer: Brief, concrete explanation, then perform

The chapter directs the nurse to offer a toddler a brief, concrete explanation of the procedure and then perform it. Long explanations raise anxiety in toddlers, while complete silence misses the chance to reduce fear with a preview. Option a is incorrect because skipping any explanation altogether misses the developmental opportunity to reduce anxiety with a short preview at the toddler's level. The chapter is explicit that toddlers receive a brief concrete description before the action. Option b is incorrect because long, detailed teaching sessions overwhelm a toddler's developmental ability to follow extended verbal information. The chapter directs the nurse to keep the explanation brief and concrete because toddlers process short descriptions better. Option c is incorrect because giving a toddler the choice to refuse a prescribed medication is not within the developmental scope of decision-making at this age. The chapter offers participation choices later, in school-age a

Correct Answer: Explain procedure and allow some control

The chapter directs the nurse to explain the procedure to a school-age child and allow some control over the body and situation. This is also the developmental moment when teaching about how the medication helps is most effective. Option a is incorrect because skipping explanations defeats the developmental advantage that school-age children have in understanding language. The chapter is explicit that this age group benefits from a fuller explanation, which builds trust and cooperation reliably. Option b is incorrect because limiting handling of equipment is not the developmental concern with a school-age child; learning by guided exposure is what the chapter recommends. Realistic equipment and books are tools for exploring feelings about procedures. Option d is incorrect because deferring teaching until a parent is reachable wastes the developmental window and treats the child as incapable of understanding. The chapter directs the nurse to engage the school-age child directly with exp

Correct Answer: Encourage participation and self-care

The chapter directs the nurse to encourage self-expression, individuality, and self-care needs in adolescents and to encourage participation in the procedure. Adolescents respond best to interactions that respect autonomy and invite them into managing care. Option a is incorrect because deferring all explanation to the parent removes the adolescent from a developmentally appropriate role in medication management. The chapter directs the nurse to communicate with the adolescent directly while parents remain part of support. Option c is incorrect because firm parental supervision without any adolescent autonomy contradicts the chapter's developmental recommendation for this age. Adolescents are at a stage where self-expression and self-care are encouraged, not controlled by external supervision. Option d is incorrect because restricting questions about the medication blocks the very engagement the chapter encourages with adolescents. Self-expression about the procedure and treatment

Correct Answer: Sixty drops per milliliter

Burette sets used for pediatric intermittent medication delivery are microdrip sets calibrated to deliver sixty drops per milliliter. Their total capacity ranges from one hundred to one hundred fifty milliliters with one-milliliter increments for precise small-volume delivery. Option a is incorrect because ten drops per milliliter is a macrodrip calibration used for routine adult delivery, not for pediatric burettes. The chapter is explicit that pediatric and intensive care environments use microdrip calibration because finer measurement is required. Option b is incorrect because fifteen drops per milliliter is another macrodrip calibration found on routine adult tubing sets in many institutions. It does not match the pediatric burette set, which is categorically microdrip with sixty drops per milliliter. Option c is incorrect because twenty drops per milliliter sits at the upper end of macrodrip calibration ranges and is still far coarser than pediatric small-volume delivery requires.