the mordant in the gram stain procedure is
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Nursing Elites

NCLEX-RN

NCLEX RN Predictor Exam

1. In the Gram Stain procedure, which component acts as the mordant?

Correct answer: C

Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.

2. Which statement by the client with chronic obstructive lung disease indicates an understanding of the major reason for the use of occasional pursed-lip breathing?

Correct answer: D

Rationale: The correct answer is D. Clients with chronic obstructive pulmonary disease have difficulty exhaling fully due to the weak alveolar walls from the disease process. Pursed-lip breathing helps prevent alveolar collapse by maintaining positive pressure in the airways during exhalation. This is the major reason for using pursed-lip breathing in individuals with chronic obstructive lung disease. Choices A, B, and C are incorrect because they do not directly address the main purpose of pursed-lip breathing, which is to prevent alveolar collapse and improve exhalation in these patients.

3. Which bloodborne pathogen is the most virulent? (Choose the BEST answer.)

Correct answer: A

Rationale: The correct answer is HCV (Hepatitis C Virus). Hepatitis C is considered the most virulent bloodborne pathogen, being 100 times more virulent than Hepatitis B. HPV (Human Papillomavirus) is a sexually transmitted infection but is not a bloodborne pathogen. HIV (Human Immunodeficiency Virus) affects the immune system but is not as virulent as Hepatitis C in terms of bloodborne transmission. HBV (Hepatitis B Virus) is less virulent compared to HCV in the context of bloodborne transmission.

4. Cheryl M. has a serious swallowing disorder. She has asked you for a glass of water. The doctor has ordered honey thickness liquids for her. Water is not a honey thickness liquid. It is much thinner. What should you do?

Correct answer: D

Rationale: You can give Cheryl the water that she has requested; however, since water is not a honey-thick liquid as ordered by the doctor, you must thicken it with a commercial thickener before giving it to her. This will ensure that the water is at the appropriate consistency for her swallowing disorder. Choices A, B, and C are incorrect: A) Telling the resident she cannot have water is not the best course of action without attempting to modify it first. B) Giving her applesauce instead of water does not address the specific request for water. C) Placing Cheryl on NPO status until midnight is unnecessary and does not address her immediate request for water.

5. What is the primary purpose of emergency planning?

Correct answer: D

Rationale: The primary purpose of emergency planning is to ensure and maintain the safety of people and the preservation of objects, such as buildings and personal possessions during emergencies or disasters. While compliance with state and federal laws regarding emergency planning is important, the main goal is to prioritize life and safety. Choices A, B, and C focus on legal compliance, which is necessary but secondary to the fundamental objective of safeguarding lives and property in emergency situations.

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