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What is the primary purpose of a platelet count?
- A. Assessing clot formation potential
- B. Assessing bleeding risk
- C. Detecting antigen-antibody response
- D. Identifying cardiac enzymes presence
Correct Answer: B
Rationale: A platelet count is primarily used to assess the risk of bleeding. Platelets play a crucial role in blood clotting, so a low platelet count can lead to an increased risk of bleeding. Monitoring platelet levels helps healthcare providers evaluate a patient's ability to form clots and manage bleeding.
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Why is a precise amount of oxygen necessary for a patient with COPD to prevent which complication?
- A. Cardiac arrest related to increased partial pressure of carbon dioxide in arterial blood (PaCO2)
- B. Circulatory overload due to hypervolemia
- C. Respiratory excitement
- D. Inhibition of the respiratory hypoxic stimulus
Correct Answer: D
Rationale: In patients with COPD, the respiratory drive is often stimulated by low oxygen levels. Administering too much oxygen can inhibit this hypoxic drive, leading to respiratory depression and potential respiratory failure. Therefore, it is crucial to carefully regulate the oxygen therapy to prevent the inhibition of the respiratory hypoxic stimulus in COPD patients.
Which of the following parameters should be checked when assessing respirations?
- A. Rate
- B. Rhythm
- C. Symmetry
- D. All of the above
Correct Answer: D
Rationale: When assessing respirations, it is essential to evaluate the rate at which breaths are taken, the rhythm of breathing patterns, and the symmetry of chest expansion. Each of these parameters provides valuable information about a person's respiratory status. Therefore, it is important to assess all of the listed parameters to have a comprehensive understanding of the individual's respiratory function.
When a family of an accident victim, who has been declared brain-dead, appears open to organ donation, what should the nurse do?
- A. Discourage them from deciding until their grief has eased
- B. Listen to their concerns and answer their questions truthfully
- C. Urge them to immediately sign the consent form
- D. Inform them that the body will not be available for a wake or funeral
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Which of the following statements about chest X-rays is false?
- A. There are contraindications for this test
- B. Before the procedure, the patient should remove all jewelry, metallic objects, and buttons above the waist
- C. A signed consent is not required
- D. Eating, drinking, and medications are allowed before this test
Correct Answer: A
Rationale: The correct answer is A because there are contraindications for chest X-rays, such as pregnancy or concerns about radiation exposure. Patients may need to remove jewelry and metallic objects to prevent interference with the imaging. While a signed consent is typically not required for a routine chest X-ray, there are specific situations where consent may be necessary. It is essential for patients to follow fasting instructions before certain types of chest X-rays to obtain accurate results.
Which of the following blood tests should be performed before a blood transfusion?
- A. Prothrombin and coagulation time
- B. Blood typing and cross-matching
- C. Bleeding and clotting time
- D. Complete blood count (CBC) and electrolyte levels
Correct Answer: B
Rationale: Before administering a blood transfusion, it is crucial to perform blood typing and cross-matching to ensure compatibility between the donor's blood and the recipient's blood. This process helps prevent adverse reactions such as transfusion reactions, which can be life-threatening. Prothrombin and coagulation time, bleeding and clotting time, as well as CBC and electrolyte levels are important tests in other clinical contexts, but for blood transfusions, blood typing and cross-matching are essential to ensure patient safety.