HESI RN
HESI Fundamentals
1. A healthcare professional is teaching a new colleague about the correct administration of subcutaneous (subQ) injections. Which instruction should the healthcare professional include?
- A. Insert the needle at a 90-degree angle for subQ injections
- B. Aspirate for blood return before injecting the medication
- C. Pinch the skin before inserting the needle
- D. Massage the site after administering the injection
Correct answer: C
Rationale: Pinching the skin before inserting the needle is essential in elevating the subcutaneous tissue away from the muscle. This technique ensures that the medication is administered into the correct tissue layer, promoting proper absorption and decreasing the risk of injecting into muscle tissue.
2. The healthcare provider attaches a pulse oximeter to a client's fingers and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
- A. BP 142/88 mmHg
- B. 2+ edema of fingers and hands
- C. Radial pulse volume is +3
- D. Capillary refill time is 2 seconds
Correct answer: B
Rationale: Edema in the fingers and hands can impede the proper functioning of the pulse oximeter, leading to a falsely low oxygen saturation reading. Edema alters the transmission of light through the tissues, affecting the accuracy of the measurement. Therefore, the presence of edema in the fingers and hands is the most likely factor contributing to the low oxygen saturation reading of 91%.
3. An adult has a coagulation time of 20 minutes. The nurse should observe the client for which of the following?
- A. Blood clots
- B. Ecchymotic areas
- C. Jaundice
- D. Infection
Correct answer: B
Rationale: A coagulation time of 20 minutes is prolonged, suggesting a potential bleeding disorder. Ecchymotic areas, which are areas of bruising, are common signs of abnormal bleeding. Therefore, the nurse should observe the client for ecchymotic areas to monitor for potential bleeding issues. Blood clots are not typically associated with prolonged coagulation time but rather with excessive clotting. Jaundice is related to liver dysfunction, and infection is not directly linked to coagulation time.
4. When bathing an uncircumcised boy older than 3 years, which action should the nurse take?
- A. Remind the child to clean his genital area.
- B. Defer perineal care due to the child's age.
- C. Retract the foreskin gently to cleanse the penis.
- D. Inquire about the reason for the child not being circumcised.
Correct answer: C
Rationale: The correct action when bathing an uncircumcised boy older than 3 years is to gently retract the foreskin to cleanse the penis. This is important to ensure proper hygiene and prevent the accumulation of bacteria that can lead to infections. It is not advisable to defer perineal care because of the child's age, as hygiene is crucial at any age. Asking the parents about the circumcision status may not be relevant during routine perineal care. Reminding the child to clean his genital area is not as effective as directly cleaning the area during bathing.
5. When a client has suffered severe burns all over his body, the most effective method of monitoring the cardiovascular system is:
- A. Cuff blood pressure.
- B. Arterial pressure.
- C. Pulmonary artery pressure.
- D. Central venous pressure.
Correct answer: D
Rationale: Central venous pressure (CVP) monitoring is the most effective method to assess fluid status and the cardiovascular system in a client with severe burns. Severe burns can lead to significant fluid shifts and hemodynamic changes, making central venous pressure monitoring crucial for guiding fluid resuscitation and managing cardiovascular stability in these patients.
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