HESI-P HESI Pharmacology - Set 1 - Part 2

Correct Answer: Three-milliliter syringe, tenths

The standard three-milliliter syringe is used to measure most injectable adult medications and is calibrated in tenths of a milliliter. That calibration matches the adult rounding rule and gives enough precision for this routine dose. Option a is incorrect because a tuberculin syringe holds only one milliliter and is reserved for small or critical doses such as a child's medication, vaccines, or allergen extracts. Its capacity is insufficient for the volume here. Option b is incorrect because insulin syringes are calibrated for units of insulin, not for the milliliter volume of an unrelated drug. Insulin should not be measured in any other type of syringe and vice versa, per chapter rules. Option c is incorrect because a five-milliliter syringe is appropriate when the required volume exceeds three milliliters and is calibrated in fifths, a coarser scale than the adult routine dose requires. The standard syringe fits better here.

Correct Answer: The top ring closest to the needle

The syringe is read at the top ring on the plunger, the ring closest to the needle, aligned with the desired calibration mark. Reading the middle or bottom ring introduces a systematic and clinically meaningful error. Option a is incorrect because the middle section is not a calibration reference; it sits between the rings and gives no clear alignment with the barrel markings. Using it would deliver a volume that does not match the calibration scale. Option b is incorrect because the bottom ring sits farthest from the needle and reads a volume that does not reflect what actually leaves the syringe. Reading the bottom ring consistently overstates the delivered volume on injection. Option d is incorrect because the chapter is explicit that only the top ring is the correct reference and that any other landmark causes dose error. Treating all rings as interchangeable defeats standardized syringe design and reintroduces avoidable inaccuracy.

Correct Answer: Verify the prescription before proceeding

The deltoid limit is two milliliters per intramuscular site, so a volume exceeding that requires verification and possibly a different site or divided dose. The chapter authorizes the nurse to question excessive parenteral volumes. Option a is incorrect because injecting more than two milliliters into the deltoid exceeds the per-site limit and risks poor absorption, tissue trauma, and site pain. The chapter rule exists because deltoid muscle mass cannot safely handle larger volumes. Option c is incorrect because needle bore selection affects flow rate and viscosity handling, not the safe per-site volume in a small muscle. A smaller needle does not change the underlying anatomic limit of the deltoid, which is fixed. Option d is incorrect because switching from intramuscular to subcutaneous is a route change requiring a prescriber order and is not interchangeable for most drugs. Some medications cannot be given subcutaneously, so a route swap is not a safe substitute.

Correct Answer: Larger, deeper muscle like ventrogluteal

The chapter recommends a larger, deeper muscle such as the ventrogluteal for the Z-track method because the depth and surrounding tissue mass help seal the medication and prevent backflow along the needle path. Option b is incorrect because the deltoid is too small and shallow to seal an irritating medication during the Z-track technique. Tracking back through subcutaneous tissue is more likely in a shallow muscle, so the chapter directs to deeper sites. Option c is incorrect because the intradermal layer is not a muscle and is reserved for tiny test doses just beneath the skin. Z-track relies entirely on the depth of a true muscle compartment, which intradermal tissue does not provide. Option d is incorrect because subcutaneous tissue of the abdomen is reserved for medications such as insulin and some heparins delivered into fat. Z-track is an intramuscular procedure and cannot be performed in subcutaneous tissue.

Correct Answer: Obtain the correct insulin syringe first

Insulin should not be measured in any other type of syringe; only an insulin syringe is acceptable. The nurse must obtain the correct insulin syringe before drawing up the dose, since unit-based calibration cannot be approximated. Option a is incorrect because estimating insulin in a non-insulin syringe is a critical error because insulin is dosed in units and the standard syringe is calibrated in milliliters. Visual estimation across two scales introduces large errors and is prohibited. Option b is incorrect because rounding a standard syringe to tenths cannot represent insulin units accurately because the two scales do not align cleanly. The chapter forbids measuring insulin in any other syringe regardless of the rounding strategy. Option c is incorrect because having a second nurse eyeball a dose drawn in the wrong syringe does not correct the scale mismatch. The witness signature offers no protection when the original tool cannot produce an accurate insulin dose.

Correct Answer: Routine adult IV at standard rate

A standard or macrodrip set is used for routine adult intravenous administrations and delivers between ten and twenty drops per milliliter depending on tubing. Microdrip sets are reserved for situations requiring finer measurement. Option a is incorrect because pediatric intensive care delivery requires the very fine measurement that only a microdrip set provides. Macrodrip tubing would deliver too much volume per drop for safe pediatric flow rates, so microdrip is required there. Option b is incorrect because critical care titration of vasoactive medications calls for precision macrodrip cannot match because each drop is a larger volume. Microdrip tubing gives the fine adjustment needed during careful titration of high-alert infusions. Option d is incorrect because neonatal intermittent antibiotic delivery falls under the small-volume bucket where microdrip tubing is mandatory. The chapter is explicit that neonatal and pediatric situations require the higher drop count per milliliter.

Correct Answer: Do not speed up the infusion

The chapter is explicit that the nurse should never increase the rate to catch up a behind-schedule fluid. The nurse collaborates with the prescriber, considers the client's tolerance, and adjusts as ordered, especially for cardiac-compromised clients. Option b is incorrect because doubling the rate without an order is exactly what the chapter prohibits, because overload risk is highest in those least able to tolerate rapid infusion. The rule applies regardless of how much time was lost. Option c is incorrect because disconnecting and restarting with a fresh bag does not address the lost volume and may interrupt drug delivery if a medication is mixed in. The intervention sidesteps the decision about rate change and prescriber collaboration. Option d is incorrect because adding a second line at a higher rate effectively doubles the total volume delivery, which is the same prohibited acceleration split across two lines. The fluid load on the client is unchanged by this approach.

Correct Answer: Increased heart rate, respirations, lung congestion

Increased heart rate, increased respirations, and increased lung congestion together signal fluid overload after a rate increase. The chapter directs the nurse to assess specifically for these three changes whenever a prescribed rate is raised. Option a is incorrect because increased urine output and warm skin reflect a normal hemodynamic response to adequate fluid balance, not overload. These findings do not match the cardiac, pulmonary, and respiratory pattern that signals delivered volume is overwhelming circulation. Option c is incorrect because decreased capillary refill and pale skin are markers of hypovolemia or poor peripheral perfusion, not excess intravascular volume. These signs point in the opposite direction and would prompt different interventions entirely. Option d is incorrect because temperature drop and tremor onset belong to a transfusion-reaction or hypothermia profile rather than to a volume-related response. The chapter ties overload assessment specifically to car

Correct Answer: Concentration in units per milliliter

Step one is to determine the concentration of the bag as units per milliliter by dividing total units by total milliliters. Only after that figure is explicit can the nurse derive the milliliters-per-hour rate. Option a is incorrect because total infusion time is not what the two-step continuous-infusion method requires first; continuous infusions run until reassessed, not for a fixed end. The chapter sequences concentration first because rate cannot be derived without it. Option b is incorrect because drops per minute apply to gravity-driven infusions, but the chapter requires an infusion pump for continuous heparin delivery. The macrodrip calculation has no role here because pumps consume milliliters per hour, not drops. Option c is incorrect because an occlusion alarm threshold is a device setting that protects against blockage and has no role in the calculation method. The two-step method addresses the dosing math; alarm thresholds are a separate safety configuration.

Correct Answer: Milliliters per hour as the rate basis

Intravenously administered fluids are prescribed most frequently in milliliters per hour, which the pump uses directly to deliver the rate. Drops-per-minute is derived from this rate only when a manual count is needed. Option a is incorrect because drops per minute is a derived measurement depending on the drop factor of tubing in use. Pumps do not consume drops per minute, so prescribers do not write rates this way for routine adult management. Option b is incorrect because total infusion duration in days is too coarse a measurement for safe fluid management and is not how prescribers communicate rate. Multi-day fluid plans are still reordered each day in milliliters per hour. Option d is incorrect because total weight of solute is a feature of additive labeling, not of fluid rate prescribing. Solute content is reflected on the bag itself, while rate is communicated to the pump as milliliters per hour.

Correct Answer: Powder is unstable when stored in solution

Some medications become unstable when stored in solution form and are therefore packaged in powder, which is then reconstituted just before use. Sterile water or normal saline serves as the diluent per the package directions. Option b is incorrect because shipping size is a logistics issue with nothing to do with why a medication is supplied as powder rather than liquid. The chapter ties powder packaging directly to stability in solution, not to shipping volume. Option c is incorrect because powders do not last longer in every condition; once reconstituted, many have a brief usable life that requires careful labeling. The relevant stability is the drug's behavior in solution, not general shelf life claims. Option d is incorrect because the nurse does not choose the dose by reconstituting; the prescriber sets the dose and the label specifies concentration achieved. Dose flexibility is governed by prescription and label, not by the act of dissolving powder.

Correct Answer: The label or package insert directions

In reconstituting a medication, the chapter directs the nurse to locate the instructions on the label or in the package insert and follow them carefully. Those directions state the diluent volume and resulting volume after dissolving. Option a is incorrect because a nursing textbook offers general principles but cannot replace the specific reconstitution instructions for that exact product. Formulations change over time, and only the current label or insert reflects the diluent volume to use. Option b is incorrect because a coworker's recollection is not an authoritative source for a measurement that can vary by product, lot, and formulation revision. Asking a coworker may help with technique, but volume must come from the printed directions. Option c is incorrect because a previous patient's discharge summary is irrelevant to the diluent volume for the current vial in hand. Reconstitution instructions are product-specific and live on the package, not in unrelated medical rec

Correct Answer: Date, time, initials, and expiration

A reconstituted multidose vial is labeled with the date and time of preparation, the nurse's initials, and the new expiration date. Indicating the strength per volume on the same label is also required for downstream dose accuracy. Option a is incorrect because patient room and bed assignment is routing that changes with transfers and discharges. A multidose vial is not assigned to a single patient, so writing patient location on the label would mislead any later draw. Option c is incorrect because the color of the solution is not a required label entry and has no role in dose calculation. Visual inspection is its own check at draw; the label exists to document time, identity, and concentration. Option d is incorrect because a reorder code is a pharmacy inventory detail that belongs in the supply system, not on a clinical medication label. The label's role is to communicate clinical information about the dose, not inventory replenishment timing.

Correct Answer: Powder adds volume on top of diluent

The powdered medication itself adds volume to the solution beyond what the diluent alone contributes. The resulting total volume exceeds the diluent volume, so a diluent-only calculation produces an incorrect concentration and dose. Option a is incorrect because diluent does not evaporate meaningfully during the brief reconstitution mixing in a sealed vial. The volume mismatch the new nurse encountered comes from the powder's own contribution, not from any loss of fluid during mixing. Option b is incorrect because powder volume is anything but negligible in many medications; the manufacturer's insert specifies a resulting volume precisely because the powder adds a meaningful amount. Treating powder volume as zero is exactly the mistake made here. Option d is incorrect because settling is a property of suspensions that have already been mixed and stand still, not the cause of this discrepancy. The chapter ties this error to forgetting the powder's volume contribution at r

Correct Answer: Strength per volume after reconstitution

The chapter requires the label to show the strength per volume on the reconstituted product. This post-reconstitution concentration is the only figure that lets a subsequent nurse compute how many milliliters will deliver the prescribed dose. Option b is incorrect because total powder weight before dissolving is not what the downstream nurse needs; she needs the concentration of the liquid she will draw. The dry-powder weight on the manufacturer's label does not govern subsequent dose calculations. Option c is incorrect because the original dry-powder expiration is replaced by a new, shorter expiration after reconstitution because solution stability differs from dry-powder stability. Relying on the original date risks drawing from a degraded solution silently. Option d is incorrect because pharmacy pricing has no clinical role in dose preparation and does not appear on bedside medication labels. The label's purpose is to communicate clinical information about the active medic

Correct Answer: Newborns have immature liver and kidneys

Newborns and infants have immature liver and kidney function, so metabolism and elimination of medications are delayed in this age group. Precision to the hundredth and use of a tuberculin syringe exist because safety margins are narrower. Option a is incorrect because infant metabolism is not robust; it is slow because hepatic enzyme systems and renal filtration mature over months after birth. Calling pediatric metabolism fast inverts the physiology and misleads about why precise dosing is required. Option b is incorrect because skin temperature affects topical absorption rates somewhat, but it is not the reason for the chapter's hundredth-rounding rule on parenteral doses. The chapter ties precision to immature hepatic and renal function, not skin observations. Option c is incorrect because infants have smaller total blood volumes, not larger, so any dose is a higher concentration per unit volume. That smaller volume reinforces the need for precision but is separate from the hep

Correct Answer: Liquids, safer to swallow

Liquid forms of medication are safer to swallow than other forms in young children, who lack the developmental coordination to manage tablets reliably. The chapter directs parents and clinicians toward liquids whenever formulation choice supports airway safety. Option a is incorrect because tablets carry higher aspiration risk in young children regardless of how successfully flavor is masked, because swallowing coordination is not yet reliable. Flavor helps adherence, but the underlying choice is governed by airway safety. Option b is incorrect because capsules pose the same swallowing challenge as tablets for a young child and may pose an even greater aspiration risk in the airway. Counting convenience does not outweigh the safety advantage of a liquid formulation. Option d is incorrect because chewable wafers carry an aspiration risk if not chewed completely, particularly in a child who may not chew before swallowing. Dissolution speed is irrelevant to aspiration, and chewables are n

Correct Answer: Infant may not finish bottle, dose lost

The chapter teaches that the child may not consume the entire serving when medication is mixed into food or drink, so the full prescribed dose is not delivered. The child may also refuse the same food later. Option a is incorrect because while a few drugs interact with dairy chemistry, the chapter's central objection to mixing medication into food is not chemical neutralization. The dose problem comes from incomplete consumption and future food aversion. Option c is incorrect because physical hardening inside the nipple may occur for some formulations but is not the principal teaching point of this guideline. The chapter focuses on the human and behavioral consequences of mixing medications into feedings. Option d is incorrect because infants do not develop immune resistance to antibiotics by ingestion through a particular vehicle; resistance is a microbial phenomenon. The chapter's reasoning addresses dose accuracy and food refusal, not immunologic concepts.

Correct Answer: Upright with the head elevated

Oral medications in children are administered with the child sitting upright and the head elevated to prevent aspiration if the child cries or resists. The position keeps the airway protected by gravity, even during a struggle. Option b is incorrect because supine and flat positions remove the gravitational protection that an upright head elevation provides. Administering oral liquid to a supine child invites aspiration during crying and is the opposite of the chapter's advice. Option c is incorrect because side-lying with the head extended opens the airway in a way appropriate for some emergency interventions, but it does not match routine oral administration. The chapter specifies upright posture, not a side-lying recovery position. Option d is incorrect because prone positioning with the chin tucked is unsuitable for any oral medication delivery and complicates both swallowing and visual monitoring. The chapter is explicit about upright posture and would not endorse a prone alt

Correct Answer: Mix thoroughly before pouring

Medications in suspension settle to the bottom of the bottle between uses, so thorough mixing is required before pouring any dose. The chapter directs administering the dose immediately after measurement to prevent silent settling. Option a is incorrect because vigorous shaking can introduce foam that obscures the meniscus during pouring. The chapter calls for thorough mixing, which is gentler and more controlled while still resuspending particles evenly throughout the bottle for accurate dosing. Option b is incorrect because warming the bottle does not address settling at all and may change the viscosity in ways that complicate pouring. The chapter's preparatory step is mixing to redistribute the active drug, not temperature manipulation. Option c is incorrect because dilution with sterile water is not part of routine pediatric oral suspension preparation and would alter the dose concentration set by the manufacturer. The chapter requires mixing of the existing formulation, not d