HESI-P HESI Pharmacology - Set 1 - Part 1

Correct Answer: Honor the refusal and notify the prescriber

Clients have the right to refuse medication regardless of consequences, and the prescriber must be notified so the regimen can be reassessed for the dizziness. The refusal and follow-up are documented in the chart. Option a is incorrect because pharmacy does not direct clinical decisions about refused doses, and documentation alone leaves dizziness uninvestigated. The prescriber must hear about the symptom so the regimen can be evaluated. Option b is incorrect because crushing a tablet into food to disguise it overrides the stated refusal. Hiding medication is covert administration, which breaches informed consent and damages trust with the care team. Option d is incorrect because pressuring a client to swallow a medication she has refused crosses into coercion. The nursing role is to explore the refusal and report it upward, not to insist on the dose.

Correct Answer: Medication reconciliation

Comparing current medications against new orders at every transition of care is medication reconciliation. The process catches omissions, duplications, and dose changes before they reach the patient and is required at every transition point. Option b is incorrect because pharmacokinetic review evaluates how a single medication is absorbed, distributed, metabolized, and excreted in one patient. It does not involve cross-checking two medication lists across care settings. Option c is incorrect because discharge planning prepares a client for the transition home with teaching, follow-up appointments, and home resources. It happens at the end of a stay, not at admission while orders are being verified. Option d is incorrect because therapeutic monitoring tracks the response to a drug already in use, examining labs, vital signs, and symptom resolution. It does not address whether the order set matches the home regimen.

Correct Answer: Contact the prescriber to clarify

An incomplete prescription must be clarified with the prescriber before any dose is given. Frequency and a legible signature are required elements, and the nurse who administers an unclear order remains legally accountable. Option a is incorrect because giving the dose without verifying the missing frequency and signature places responsibility for any error on the nurse. Legal accountability stays with the nurse who administers, regardless of who wrote the unclear order. Option b is incorrect because telling the client to wait without acting on the order delays clarification rather than addressing it. Only the prescriber can resolve the missing elements, so reaching the prescriber is the priority. Option c is incorrect because pharmacy already dispensed the drug from the verbal order and cannot supply the missing frequency or interpret the illegible signature. Only the original prescriber can clarify what was actually intended.

Correct Answer: Herbal substances interact with prescriptions

Herb-drug interactions are well documented, so every herbal substance the client uses must be assessed before any prescription is started. The nurse cannot rely on the client to volunteer this information. Option a is incorrect because telling a client that herbal products have no clinical effect contradicts the pharmacology evidence on herb-drug interactions. Such teaching could lead her to keep dangerous combinations hidden from the team. Option c is incorrect because sterility is not the relevant safety concern with most oral herbal supplements, and the online sourcing claim is unverifiable. The actual concern is pharmacological interaction with prescribed medications. Option d is incorrect because no category of substance the client ingests is exempt from documentation; the medication history is meant to be exhaustive so interactions can be predicted. Treating herbs as outside the record creates a blind spot.

Correct Answer: The nurse who administered is responsible

Regardless of source or cause, the nurse who gives an incorrect dose is legally responsible for that action. Calculation accuracy is therefore both a clinical and legal obligation at the point of administration. Option b is incorrect because pharmacists are responsible for accurate dispensing, but once a nurse administers a dose, accountability for what reaches the client transfers to her. The dispensing role does not absorb the administration role. Option c is incorrect because prescribers are responsible for writing an appropriate order, but the nurse remains the final filter at the bedside. Administering an order the nurse should have questioned does not shift accountability back. Option d is incorrect because institutions share liability through internal risk processes, but at the level of licensure each nurse remains personally accountable for what she administers. Agency frameworks do not erase individual nursing responsibility.

Correct Answer: Convert so both share a unit

Conversion is the explicit first step whenever prescribed and available units differ. Applying the formula to mismatched units produces an answer off by a factor of a thousand, a classic source of medication error. Option a is incorrect because rounding belongs at the end of a calculation, never before it. Premature rounding magnifies error through every following step, and the rule applies to tablet doses and to multi-step infusion problems alike. Option b is incorrect because substituting a similar drug is outside the nurse's scope and not the response to a simple unit mismatch. The molecule on hand is correct; only its quantity expression needs translation before the formula applies. Option c is incorrect because a unit mismatch between order and label is routine and resolved by conversion, not by asking for a rewrite. Calling for a rewrite would waste prescriber time and delay a needed medication unnecessarily.

Correct Answer: Each unit scales by a thousand

The metric system is decimal, so converting between units means multiplying or dividing by a thousand, equivalent to shifting the decimal point three places. That predictable pattern reduces conversion error. Option a is incorrect because metric units do not share a single name; gram, milligram, microgram, and kilogram are distinct labels. The unifying feature is the prefix system that scales each unit by a thousand, not a shared root word. Option b is incorrect because apothecary measures such as grain and dram are historical artifacts that do not align with metric units cleanly. The exam does not require conversion between the two systems, and apothecary is rarely used clinically. Option d is incorrect because metric units are internationally standardized, the opposite of regional variability. A milligram in one country equals a milligram in another without any local adjustment to the value at all.

Correct Answer: The drug measures biological activity

A unit expresses a drug by its biological action rather than by weight. Insulin and heparin are dosed this way because their effect, not their mass, determines therapy, so converting them to milligrams would lose clinical meaning. Option a is incorrect because milligram conversion is exactly what the unit designation signals the nurse to avoid. A unit dose cannot cross-walk into a weight value because the underlying meaning is biological activity, not mass. Option c is incorrect because neither potassium nor insulin is exempt from the metric system; both still use metric volumes such as the milliliter for delivery. Labels just use a different scale for the active agent. Option d is incorrect because the unit designation says nothing about whether the medication is solid or liquid. Insulin is liquid in a syringe, and potassium for IV use is in solution, yet both are described by activity-based labels.

Correct Answer: Apothecary is uncommon but still encountered

The apothecary system is not commonly used today, yet the nurse may still encounter it in the clinical setting, particularly with certain older medications. Familiarity prevents hesitation when a grain-based order arrives at the bedside. Option a is incorrect because the metric system is preferred and most commonly used in clinical practice, not the apothecary system. Apothecary lingers only in scattered legacy contexts, so calling it preferred would mislead a new graduate. Option b is incorrect because labels are required to display generic names and metric dosing, not grain measurements. A grain measurement on any given label is the exception rather than a uniform labeling requirement in the United States. Option c is incorrect because apothecary units have not been banned, only relegated to occasional use; the licensure exam itself does not require apothecary-to-metric conversion. Calling them banned overstates the policy and would confuse the nurse.

Correct Answer: Grams of drug per milliliter solution

A milliequivalent expresses the number of grams of a medication contained in one milliliter of solution. Lab potassium results and electrolyte orders share this unit so that order, label, and lab speak the same language. Option b is incorrect because solvent volume alone tells nothing about drug concentration and is meaningless without the active ingredient amount. The milliequivalent links the active ingredient to a fixed solution volume for delivery. Option c is incorrect because weight of drug per dose, without reference to the solution carrying it, leaves the concentration undefined. Milliequivalents combine quantity and volume into a single ratio for direct comparison across order, lab, and bottle. Option d is incorrect because tablet count is an oral concept with no place in describing an IV electrolyte replacement. The milliequivalent is a solution-based ratio used for liquid therapy, not a count of solid dosage forms.

Correct Answer: Generic names appear on every label

A medication label always contains the generic name, while the trade name may or may not appear. The exam tests generic recognition for that reason, and reading labels by generic name keeps the nurse oriented. Option a is incorrect because brand names do not rotate on a monthly schedule; they remain stable for years until a brand is withdrawn or a generic emerges. The instability claim is not the reason to prioritize generic names. Option b is incorrect because brand names are still used widely in clinical practice, in advertising, and in many ordering systems. The exam preference for generic names does not mean brand names have disappeared from charting or communication. Option d is incorrect because color-coding is not a regulated feature of generic names, and visual cues differ by manufacturer rather than by chemical identity. The dependable identifier across manufacturers is the generic name printed on the label.

Correct Answer: Frequency of administration

Time and frequency are required elements of every prescription, alongside the client name, date, drug, dose, route, and prescriber signature. A missing frequency leaves the dosing schedule ambiguous and must be clarified. Option a is incorrect because tablet color varies by manufacturer and is not a prescription element. The nurse verifies the generic name rather than visual cues, so a missing color description is not a reason to call back. Option b is incorrect because manufacturer information appears on labels and pharmacy systems, but it is not a required element on the prescription itself. Without it, the nurse can still proceed, provided the ordering details are clear. Option c is incorrect because reference textbook publication dates are not part of a medication prescription. The required elements concern ordering the drug, not the educational sources that informed it, so this would not prompt clarification.

Correct Answer: Check the expiration date carefully

Every medication label must be checked for the expiration date before any dose is drawn up. Expired insulin loses potency unpredictably, so even a vial that looks fine can deliver an inadequate dose silently. Option b is incorrect because discarding the vial without checking the date wastes medication and money when the product may still be within its useful life. The expiration date on the label is the actual decision rule, not elapsed time. Option c is incorrect because switching drug classes is a prescriber decision driven by clinical response, not a routine response to opening a bottle. The preparatory check is about verifying the existing product, not substituting a different one. Option d is incorrect because repackaging insulin into a different container introduces contamination risk and breaks the chain of identification the original vial provides. The proper preparatory step is verification of what is already labeled.

Correct Answer: Route compatibility for use

A label specifying a single route, such as intramuscular only, cannot be diluted and given intravenously even if the drug is otherwise correct. Route compatibility is verified on the label before any preparation begins. Option a is incorrect because generic name placement confirms identity but not how the product may be safely delivered into the body. Identity and route are separate label features, and the route restriction overrides the identity check. Option c is incorrect because expiration text size has no bearing on whether the antibiotic can be given by an unlisted route into a vein. Expiration governs potency over time; route restriction governs anatomic delivery, as separate checks. Option d is incorrect because manufacturer logo placement is purely aesthetic and provides no clinical information. A product that arrives in the wrong form for the prescribed route cannot be made compatible by reading the logo location.

Correct Answer: Strength per reconstituted volume

Indicating the strength per volume after reconstitution is essential because the resulting concentration differs from the dry-powder label. Any nurse who later draws from this vial needs that figure to calculate the correct dose. Option a is incorrect because shelf location is a storage convenience, not a clinical dosing input. The chapter requires labeling that supports downstream calculations, and a shelf number contributes nothing to determining how many milliliters to draw next. Option b is incorrect because the pharmacist's home phone is not part of any medication labeling standard. Reach-back contact for pharmacy is handled through institutional channels and would not appear on a vial that any nurse might draw from. Option d is incorrect because patient room numbers are administrative routing that changes with transfers and discharges. A multidose vial is not assigned to a single room, so writing one would mislead any nurse who later draws from it.

Correct Answer: The indented mark for division

Scored tablets carry an indented mark intended for breakage into halves or quarters, preserving dose accuracy when split along that line. Tablets without a score must not be split because the fragments cannot be guaranteed equal. Option b is incorrect because film coating exists to mask taste, ease swallowing, or shield gastric mucosa from irritation, not to enable safe splitting. A coating may even be disrupted by splitting, so it is not the deciding feature here. Option c is incorrect because the child-resistant cap is a packaging safety feature for unauthorized access at home. It has no relationship to whether the tablet inside may be split, since that is governed by the tablet's physical design. Option d is incorrect because filler color identifies the product visually but does not predict whether active drug is evenly distributed across the tablet. Even distribution along a score line permits halving, and color tells the nurse nothing about that.

Correct Answer: Crushing destroys the release mechanism

Sustained-release products are engineered to release drug over time, and crushing destroys the mechanism that controls that release. The result is an immediate-release dose with toxicity risk, so an alternative formulation must be requested. Option a is incorrect because crushing does not enhance bioavailability of sustained-release products; it turns a controlled-release product into an unintentional immediate-release one. The bioavailability gain is dangerous rather than helpful for the client. Option b is incorrect because crushing actually creates a different aspiration concern by changing the texture of the medication-food mixture and may complicate swallowing further. This practice is forbidden for pharmacologic timing reasons, not aspiration mechanics. Option c is incorrect because absorption of sustained-release products is designed to occur in the small intestine over hours, not after physical disruption. Crushing cancels the intended slow profile and triggers a rapid plasma p

Correct Answer: Cup on level surface, eye level

The medicine cup is placed on a level surface at eye level before pouring, so the meniscus can be read accurately against the calibration line. Holding or viewing from above introduces parallax error that easily distorts the dose. Option a is incorrect because holding the cup in mid-air introduces shake and tilt that distort the meniscus reading. The chapter requires the cup to rest on a level surface so the meniscus sits flat against calibration marks. Option c is incorrect because pouring while in motion guarantees an inaccurate volume because the meniscus cannot stabilize against the calibration markings. Liquid measurement requires a still container, and walking introduces both spillage and reading error. Option d is incorrect because estimating overhead introduces severe parallax distortion and removes the calibration markings as a visual reference. Accurate liquid dosing depends on reading the meniscus at eye level with the cup steady.

Correct Answer: A syringe with needle removed

Volumes less than five milliliters are measured using a syringe with the needle removed, giving precise calibration that a medicine cup cannot offer. The chapter specifies calibrated syringes for children because precision in small volumes is mandatory. Option a is incorrect because a tablespoon is a household measure far too large for sub-teaspoon dosing and is not finely calibrated. Using it for a small volume would deliver a multiple of the intended dose, a serious pediatric risk. Option b is incorrect because a graduated kitchen cup is designed for cooking volumes and lacks medical calibration for small doses below a few milliliters. The marks cannot resolve fractions of a teaspoon, so the measurement would be unreliable. Option d is incorrect because a plastic straw is not a measuring device and carries no calibration markings. It may help children swallow once the dose is drawn, but it cannot measure the volume of an oral liquid medication accurately.

Correct Answer: Question the prescription with the prescriber

The chapter authorizes the nurse to question the prescription whenever an oral calculation calls for more than three tablets. An unusually large count may signal a wrong dose or wrong-strength product, and verification with the prescriber is required. Option b is incorrect because crushing and splitting does not address the underlying possibility that the calculated count signals a wrong dose. The tablet count is the warning sign; physical manipulation while the dose is unverified preserves the error. Option c is incorrect because administering five tablets without verification ignores a built-in safety threshold the chapter teaches as a mandatory pause. Five whole tablets at one dose is unusual enough to warrant a callback before any administration. Option d is incorrect because silent documentation and administration treats the high count as routine when the chapter flags it for verification. Documentation of an unverified dose does not insulate the nurse from accountability if the p