HESI RN
Biology Test
1. During cellular respiration, glycolysis takes place in the cytosol and produces how many molecules of ATP, pyruvate, and NADH?
- A. two, two, two
- B. two, four, two
- C. two, four, four
- D. four, four, four
Correct answer: A
Rationale: Glycolysis, the first step of cellular respiration, takes place in the cytosol and produces two molecules each of ATP, pyruvate, and NADH. Therefore, the correct answer is A. Choice B is incorrect as glycolysis produces two ATP molecules, not four. Choice C is incorrect as it incorrectly states that glycolysis produces four molecules of pyruvate and NADH. Choice D is incorrect because glycolysis produces two molecules of ATP, not four.
2. A male client with bipolar disorder who began taking lithium carbonate five days ago is complaining of excessive thirst, and the nurse finds him attempting to drink water from the bathroom sink faucet. Which intervention should the nurse implement?
- A. Report the client’s serum lithium level to the healthcare provider.
- B. Encourage the client to suck on hard candy to relieve the symptoms.
- C. No action is needed since polydipsia is a common side effect.
- D. Tell the client that drinking from the faucet is not allowed.
Correct answer: B
Rationale: Encouraging the client to suck on hard candy is the appropriate intervention as it can help alleviate the sensation of excessive thirst, which is a common side effect of lithium. Reporting the client’s serum lithium level to the healthcare provider may be needed if there are signs of lithium toxicity, but the priority here is to address the immediate symptom of excessive thirst. Polydipsia, or excessive thirst, is a known side effect of lithium, but it should not be left unaddressed. Simply telling the client that drinking from the faucet is not allowed does not address the underlying issue of excessive thirst and may lead to further distress.
3. An incoherent female client with a history of hypothyroidism is brought to the emergency department by the rescue squad. Physical and laboratory findings reveal hypothermia, hypoventilation, respiratory acidosis, bradycardia, hypotension, and nonpitting edema of the face and pretibial area. Knowing that these findings suggest severe hypothyroidism, Nurse Libby prepares to take emergency action to prevent the potential complication of:
- A. Thyroid storm.
- B. Cretinism.
- C. Myxedema coma.
- D. Hashimoto's thyroiditis.
Correct answer: C
Rationale: The scenario described with hypothermia, hypoventilation, respiratory acidosis, bradycardia, hypotension, and nonpitting edema of the face and pretibial area is indicative of myxedema coma, a severe and life-threatening complication of hypothyroidism. Myxedema coma requires immediate emergency treatment to prevent further deterioration. Choice A, thyroid storm, is a complication of hyperthyroidism characterized by an increase in body temperature, heart rate, and blood pressure. Choice B, cretinism, refers to untreated congenital hypothyroidism leading to mental and physical growth retardation. Choice D, Hashimoto's thyroiditis, is an autoimmune condition leading to hypothyroidism but does not present with the acute, life-threatening symptoms described in the scenario.
4. One hour after giving birth to an 8-pound infant, a client's lochia rubra has increased from small to large, and her fundus is boggy despite massage. The client's pulse is 84 beats/minute, and blood pressure is 156/96. The healthcare provider prescribes Methergine 0.2 mg IM × 1. What action should the healthcare provider take immediately?
- A. Give the medication as prescribed and monitor for efficacy.
- B. Encourage the client to breastfeed rather than bottle-feed.
- C. Have the client empty her bladder and massage the fundus.
- D. Call the healthcare provider to question the prescription.
Correct answer: D
Rationale: The correct action for the healthcare provider to take immediately is to call the healthcare provider to question the prescription. Methergine is contraindicated in clients with hypertension due to its potential to elevate blood pressure further. In this scenario, the client's blood pressure is already elevated at 156/96, making it unsafe to administer Methergine. The LPN/LVN should advocate for the client's safety by questioning the prescription to prevent potential harm.
5. A client taking ethambutol (Myambutol) understands the instructions provided by the nurse if the client states that he or she will immediately report:
- A. Impaired sense of hearing
- B. Problems with visual acuity
- C. Gastrointestinal (GI) side effects
- D. Orange-red discoloration of body secretions
Correct answer: B
Rationale: The correct answer is B: Problems with visual acuity. Ethambutol is known to cause optic neuritis, leading to a decrease in visual acuity and color discrimination. Therefore, any visual changes should be reported promptly to prevent further complications. Choices A, C, and D are incorrect because ethambutol does not typically cause impaired sense of hearing, gastrointestinal side effects, or orange-red discoloration of body secretions. It is crucial for clients taking ethambutol to be aware of potential visual disturbances and report them promptly to healthcare providers.
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