HESI Practice Test for Fundamentals

Correct Answer: B

Rationale: The correct instruction for using a metered-dose inhaler is to hold your breath for 10 seconds after inhaling the medication. This allows the medication to be absorbed more effectively in the lungs. Inhaling quickly and deeply while pressing down on the inhaler (Choice A) may cause the medication to deposit in the mouth and throat rather than reaching the lungs. Exhaling immediately after inhaling the medication (Choice C) may also lead to medication wastage. Shaking the inhaler before each use (Choice D) is not necessary for all types of inhalers and can sometimes cause improper drug delivery.

Correct Answer: B

Rationale: The LPN should monitor potassium levels closely while the client is taking furosemide (Lasix) due to the medication's potential to cause hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss through increased urine output. Hypokalemia can result in serious complications such as cardiac dysrhythmias. Monitoring sodium levels (choice A) is important but not as critical as monitoring potassium in this context. Calcium (choice C) and magnesium (choice D) levels are not typically affected by furosemide and are not the priority for monitoring in this scenario.

Correct Answer: D

Rationale: The correct answer is 'Discipline.' In this scenario, discipline is exemplified by following a structured and comprehensive assessment process, as seen in the head-to-toe approach. Confidence (choice A) relates to self-assurance and belief in one's abilities, which is not the primary critical thinking demonstrated in this situation. Perseverance (choice B) is the persistence in achieving goals despite challenges, not directly related to the systematic assessment process. Integrity (choice C) pertains to honesty and ethical behavior, which are important traits but not the critical thinking skill exemplified by the structured assessment process shown in the head-to-toe approach.

Correct Answer: A

Rationale: Taking an iron supplement with milk can decrease its absorption, indicating a need for further teaching.

Correct Answer: A

Rationale: Lorazepam (Ativan) is the most appropriate preoperative medication for a client with severe anxiety. Lorazepam belongs to the benzodiazepine class and is commonly used to manage anxiety before surgical procedures due to its anxiolytic properties. Morphine sulfate and Meperidine (Demerol) are opioid analgesics, not typically indicated for preoperative anxiety. Promethazine (Phenergan) is an antihistamine used for nausea and vomiting, not anxiety management.