which hormone is primarily responsible for the regulation of calcium and phosphate in the blood
Logo

Nursing Elites

HESI LPN

HESI PN Exit Exam 2024 Quizlet

1. Which hormone is primarily responsible for the regulation of calcium and phosphate in the blood?

Correct answer: A

Rationale: Parathyroid hormone is the correct answer. It regulates calcium and phosphate levels in the blood by increasing calcium reabsorption in the kidneys and releasing calcium from bones. Insulin is involved in glucose metabolism, not calcium and phosphate regulation. Cortisol is a stress hormone and is not primarily responsible for regulating calcium and phosphate levels. Thyroxine is a thyroid hormone that primarily regulates metabolism, not calcium and phosphate in the blood.

2. What is the primary role of the sinoatrial (SA) node in the heart?

Correct answer: A

Rationale: The correct answer is A: Pacemaker of the heart. The SA node, known as the natural pacemaker, initiates the electrical impulses that set the rhythm for the heartbeat. It is responsible for coordinating the heart's contractions by generating electrical signals at regular intervals. Choice B is incorrect as the SA node's primary function is not related to blood pressure regulation. Choice C is incorrect as the SA node does not cause electrical conduction delay but rather initiates and conducts the electrical impulses. Choice D is incorrect as the SA node does not directly stimulate muscle contraction but rather initiates the electrical events that lead to muscle contraction.

3. While caring for a client with a new tracheostomy, the nurse notices that the client is attempting to speak but is unable to. What should the nurse explain to the client regarding their inability to speak?

Correct answer: B

Rationale: The correct answer is B. The tracheostomy tube bypasses the vocal cords, preventing air from reaching them, which is necessary for speech. This makes speaking difficult but not impossible. Removing the tracheostomy tube does not automatically restore the ability to speak (choice C). While a speaking valve can be added later to allow speech, initially, the tracheostomy tube itself hinders air from reaching the vocal cords, making speech difficult (choice D is incorrect). Choice A is incorrect as the tracheostomy tube does not block the vocal cords directly; instead, it prevents air from reaching them.

4. While providing oral care for a client who is unconscious, the nurse positions the client laterally and uses a basin to collect secretions. Which intervention is best for the nurse to implement?

Correct answer: B

Rationale: Using oral swabs with normal saline is the best intervention in this scenario as it effectively cleans the oral cavity without causing irritation or dryness, which is crucial for an unconscious client. Swabbing the oral cavity with a washcloth may not provide thorough cleaning, and it can potentially cause irritation. Providing a Yankauer tip for oral suction is not necessary unless there are excessive secretions that need to be suctioned. Supporting the head with a small pillow, although important for comfort, is not directly related to oral care in an unconscious client.

5. A client with a chest tube following a pneumothorax is concerned about the continuous bubbling in the water seal chamber. What should the nurse explain to the client?

Correct answer: A

Rationale: Continuous bubbling in the water seal chamber of a chest tube system indicates an air leak. An air leak can prevent the lung from fully re-expanding and may lead to complications like a recurrent pneumothorax. Therefore, it is crucial to investigate and address the air leak promptly. Choices B and C are incorrect because continuous bubbling is not normal and does not indicate lung expansion. Choice D is incorrect because the nurse should first assess and then report the issue to the healthcare provider.

Similar Questions

Which intervention is most appropriate when caring for a patient experiencing a tonic-clonic seizure?
The nurse is providing care for a client with type 1 diabetes mellitus who is receiving NPH insulin. The nurse notices that the client's evening glucose levels are consistently above 260 mg/dl. What does this indicate?
You are teaching students about how hyperosmotic agents (osmotic diuretics) are used to treat intracranial pressure. Which of the following is NOT one of the functions of hyperosmotic agents?
What is the first step in using an automated external defibrillator (AED) on a patient who has collapsed?
Which electrolyte imbalance is most likely to cause cardiac arrhythmias?

Access More Features

HESI LPN Basic
$69.99/ 30 days

  • 5,000 Questions with answers
  • All HESI courses Coverage
  • 30 days access

HESI LPN Premium
$149.99/ 90 days

  • 5,000 Questions with answers
  • All HESI courses Coverage
  • 30 days access

Other Courses