Nokea
When preparing a site for venipunctures with alcohol, how long must the area be cleaned?
- A. 5 seconds
- B. 10 seconds
- C. 30 seconds
- D. 60 seconds
Correct Answer: D
Rationale: The correct answer is D: 60 seconds. This is because the area must be cleaned for at least 60 seconds to effectively disinfect the skin and reduce the risk of infection during venipuncture. Cleaning for shorter durations (5, 10, or 30 seconds) may not be sufficient to achieve proper disinfection. Thoroughly cleaning the area for a full minute ensures that the alcohol has enough time to kill bacteria and pathogens on the skin, making it safer for the venipuncture procedure. Shorter cleaning times may leave pathogens behind, increasing the risk of contamination and infection.
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As the nurse cares for a patient with angioedema, differs from urticaria in that angioedema is characterized by which of the following?
- A. Angioedema is more pruritic.
- B. Angioedema has small, fluid-filled vesicles
- C. Angioedema has a deeper and more that crust.
- D. Angioedema lasts a shorter time.
Correct Answer: C
Rationale: Step-by-step rationale for choice C: Angioedema differs from urticaria as it involves deeper swelling in the dermis and subcutaneous tissue, leading to a more profound and firm texture. This contrasts with urticaria, which presents as superficial, raised wheals on the skin. Therefore, option C is correct.
Summary of other choices:
A: Angioedema is not typically associated with intense itching, so it is not more pruritic than urticaria.
B: Angioedema does not have small, fluid-filled vesicles like in allergic contact dermatitis.
D: Angioedema tends to last longer than urticaria, making this statement incorrect.
The nurse is using critical thinking skills during the first phase of the nursing process. Which action indicates the nurse is in the first phase?
- A. Completes a comprehensive database
- B. Identifies pertinent nursing diagnoses
- C. Intervenes based on priorities of patient care
- D. Determines whether outcomes have been achieved
Correct Answer: A
Rationale: The correct answer is A because the first phase of the nursing process is assessment, where the nurse gathers comprehensive data about the patient's health status. This step is crucial in identifying problems and setting priorities for care. Choice B comes in the second phase (diagnosis), C in the third phase (planning), and D in the last phase (evaluation). Assessing the patient's condition is the foundation for the rest of the nursing process.
The activation of B cells in humoral immunity is assisted by which of the following?
- A. Cytotoxic T cells
- B. Suppressor T cells
- C. Helper T cells
- D. Neutrophils
Correct Answer: C
Rationale: The correct answer is C: Helper T cells. Helper T cells play a crucial role in activating B cells by releasing cytokines that stimulate B cell proliferation and differentiation. They also help in the production of antibodies. Cytotoxic T cells (A) are involved in cell-mediated immunity, not humoral immunity. Suppressor T cells (B) regulate the immune response and do not directly assist in B cell activation. Neutrophils (D) are phagocytic cells involved in innate immunity, not in activating B cells in humoral immunity.
Which of the ff does the examiner note when auscultating the lungs of a client with pleural effusion?
- A. Pronounced breath sounds
- B. Expiratory wheezes
- C. Friction rub
- D. Fluid in the involved area
Correct Answer: D
Rationale: The correct answer is D because pleural effusion is the accumulation of fluid in the pleural space. When auscultating the lungs of a client with pleural effusion, the examiner would note decreased or absent breath sounds over the area where the fluid has accumulated. This is due to the fluid blocking the transmission of sound through the lungs. Pronounced breath sounds (choice A) would not be present due to the fluid obstructing the normal sound transmission. Expiratory wheezes (choice B) are associated with airway obstruction, not fluid accumulation. Friction rub (choice C) is a dry, grating sound heard with inflammation of the pleura, not specifically related to pleural effusion.
Which of the ff conditions is evident by persistent hoarseness?
- A. Bacterial infection
- B. Aphonia
- C. Laryngeal cancer
- D. Peritonsillar abscess
Correct Answer: C
Rationale: The correct answer is C: Laryngeal cancer. Persistent hoarseness is a common symptom of laryngeal cancer due to vocal cord involvement. Laryngeal cancer causes changes in voice quality over time. Bacterial infection (A) usually presents with acute symptoms and resolves with treatment. Aphonia (B) is the complete loss of voice, not persistent hoarseness. Peritonsillar abscess (D) causes sore throat and difficulty swallowing, but not persistent hoarseness.