after placing a stethoscope as seen in the picture the nurse auscultates s1 and s2 heart sounds to determine if an s3 heart sound is present what acti

HESI RN

HESI RN Exit Exam

1. After placing a stethoscope as seen in the picture, the nurse auscultates S1 and S2 heart sounds. To determine if an S3 heart sound is present, what action should the nurse take first?

A. Slide the stethoscope across the sternum.
B. Move the stethoscope to the mitral site.
C. Listen with the bell at the same location.
D. Observe the cardiac telemetry monitor.

Correct answer: C

Rationale: The nurse uses the bell of the stethoscope to hear low-pitched sounds such as S3 and S4. To determine if an S3 heart sound is present, the nurse should listen at the same location using the bell first. This allows for the accurate identification of low-pitched sounds. Moving the stethoscope across the sternum (Choice A) or to the mitral site (Choice B) would not be the initial actions to assess for an S3 heart sound. Observing the cardiac telemetry monitor (Choice D) is not relevant for assessing S3 heart sounds, as it does not provide direct auscultation of heart sounds.

2. The client with end-stage renal disease (ESRD) is scheduled for hemodialysis. Which laboratory value is most concerning?

A. Serum potassium of 6.0 mEq/L
B. Serum creatinine of 2.5 mg/dL
C. Serum calcium of 8.0 mg/dL
D. Hemoglobin of 10 g/dL

Correct answer: A

Rationale: A serum potassium level of 6.0 mEq/L is most concerning in a client with ESRD scheduled for hemodialysis as it indicates hyperkalemia, which can lead to serious cardiac complications such as arrhythmias and cardiac arrest. Immediate intervention is required to lower potassium levels. Choice B, serum creatinine of 2.5 mg/dL, is elevated but expected in ESRD due to impaired kidney function. Choice C, serum calcium of 8.0 mg/dL, is within the normal range and not typically a priority in this situation. Choice D, hemoglobin of 10 g/dL, is slightly low but not an immediate concern for a client scheduled for hemodialysis unless significantly lower and causing severe symptoms.

3. While caring for a toddler receiving oxygen (02) via face mask, the nurse observes that the child's lips and nares are dry and cracked. Which intervention should the nurse implement?

A. Ask the mother what she usually uses on the child's lips and nose.
B. Apply a petroleum jelly (Vaseline) to the child's nose and lips.
C. Use a topical lidocaine (Zylocaine viscous) analgesic for cracked lips.
D. Use a water-soluble lubricant on affected oral and nasal mucosa.

Correct answer: D

Rationale: A water-soluble lubricant is safe to use in conjunction with oxygen therapy, unlike petroleum jelly which is flammable.

4. Following a gunshot wound to the abdomen, a young adult male had an emergency bowel resection and received multiple blood products. His current blood pressure is 78/52 mm Hg, and he is being mechanically ventilated. His oxygen saturation is 87%. Laboratory values indicate hemoglobin of 7 g/dL, platelets of 20,000/mmÂ³, and white blood cells of 2,000/mmÂ³. Which intervention should the nurse implement first?

A. Transfuse packed red blood cells.
B. Obtain blood and sputum cultures.
C. Infuse 1000 ml of normal saline.
D. Titrate oxygen to keep O2 saturation above 90%.

Correct answer: A

Rationale: The correct answer is to transfuse packed red blood cells first. The client's low hemoglobin level of 7 g/dL indicates severe anemia, which requires immediate transfusion to increase oxygen-carrying capacity. While obtaining blood and sputum cultures (Choice B) is important to identify potential infections, addressing the critical issue of anemia takes precedence. Infusing normal saline (Choice C) may help with volume status but does not address the primary concern of low hemoglobin. Titration of oxygen (Choice D) is crucial, but transfusion to improve oxygen-carrying capacity should be the priority in this scenario.

5. After a sudden loss of consciousness, a female client is taken to the ED, and the initial assessment indicates that her blood glucose level is critically low. Once her glucose level is stabilized, the client reports that she was recently diagnosed with anorexia nervosa and is being treated at an outpatient clinic. Which intervention is most important to include in this client's discharge plan?

A. Describe the signs and symptoms of hypoglycemia.
B. Encourage a low-carbohydrate and high-protein diet.
C. Reinforce the need to continue outpatient treatment.
D. Suggest wearing a medical alert bracelet at all times.

Correct answer: B

Rationale: Encouraging a low-carbohydrate and high-protein diet is crucial for a client recovering from anorexia nervosa to prevent hypoglycemic episodes. Choice A is not the most important intervention at this point since the client is already aware of hypoglycemia based on the recent event. Choice C is important but not the priority in this situation where dietary intervention is crucial. Choice D, suggesting a medical alert bracelet, is not as essential as ensuring proper nutrition to prevent further hypoglycemic episodes.