HESI Fundamentals Study Guide

Correct Answer: C

Rationale: The correct position for a postoperative client using an incentive spirometer is the Semi-Fowler's position. Placing the client in Semi-Fowler's or high-Fowler's position maximizes lung expansion and the effectiveness of the incentive spirometer. Side-lying may not provide optimal lung expansion. The supine position is not ideal for postoperative clients using incentive spirometers as it may limit lung expansion. The Trendelenburg position is not recommended due to potential complications postoperatively.

Correct Answer: B

Rationale: When assessing a young adult's musculoskeletal system, the nurse should expect an exaggerated lumbar curvature (lordosis). This is a normal finding in young adults due to the natural curvature of the spine. Concave thoracic spine posteriorly (choice A) and concave lumbar spine posteriorly (choice C) are not typical findings as the spine should have normal curvatures. Exaggerated thoracic curvature (choice D) is also not a typical finding in young adults.

Correct Answer: A

Rationale: Before administering morphine sulfate, it is crucial to measure the client's vital signs to ensure that the client is stable and safe to receive the medication. This step helps identify any contraindications or abnormalities that could affect the administration of morphine. Assessing the client's pain level (choice B) is important, but ensuring the client's physiological stability takes precedence. Verifying the morphine order with another nurse (choice C) and checking the client's last dose of morphine (choice D) are important steps but are not the priority before administering the medication.

Correct Answer: B

Rationale: The correct answer is B, a lactating woman nursing her 3-day-old infant. During lactation, women have increased nutritional needs, including protein, to support milk production for their infants. Protein is essential for proper growth and development. While choice A, a college-age track runner with a sprained ankle, may require protein for tissue repair, the lactating woman's need is greater due to the demands of breastfeeding. Choice C, a school-aged child with Type 2 diabetes, may have specific dietary considerations related to diabetes management but does not necessarily require additional protein intake compared to a lactating woman. Choice D, an elderly man being treated for a peptic ulcer, may need protein for wound healing, but the nutritional need for a lactating woman is higher to support her infant's growth.

Correct Answer: B

Rationale: Enoxaparin is a medication that is administered subcutaneously, which means it should be injected into the fatty tissue layer beneath the skin. Administering enoxaparin at a 90-degree angle ensures proper absorption and reduces the risk of injecting the medication into muscle tissue, which could affect its effectiveness. Injecting the medication at a 45-degree angle may lead to improper absorption as it may not reach the subcutaneous tissue adequately. Injecting the medication into the muscle instead of subcutaneously can alter the absorption rate and therapeutic effects. Pinching the skin before injecting is not necessary for administering enoxaparin subcutaneously and may cause unnecessary discomfort to the client.