tuberculosis mycobacterium usually effects which system
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Nursing Elites

NCLEX-PN

NCLEX PN Exam Cram

1. Which system is primarily affected by tuberculosis (Mycobacterium)?

Correct answer: C

Rationale: Tuberculosis, caused by Mycobacterium tuberculosis, primarily affects the respiratory system. This aerobic bacillus thrives in highly oxygenated body sites, such as the lungs, growing ends of bones, and the brain. The bacillus is airborne, making the lungs a common site for infection. Choices A, B, and D are incorrect as tuberculosis predominantly impacts the respiratory system and rarely involves the stomach, heart, or skin.

2. A client is having psychological counseling for problems communicating with his mother. Which model of stress is the most useful in reference to this stressor?

Correct answer: C

Rationale: The Transaction-Based Model, proposed by R.S. Lazarus, is the most relevant model of stress in the context of a client facing communication issues with his mother. This model takes into consideration individual differences and cognitive processes that occur between a stressor and the individual's response. It emphasizes the importance of how the individual perceives and interprets the stressor, incorporating mental and psychological components. In this scenario, the client's difficulties in communicating with his mother involve complex cognitive processes and individual perceptions, making the Transaction-Based Model the most suitable choice. The other options are not as relevant in this context: the Adaptation Model focuses on adjustment to stress over time, the Stimulus-Based Model emphasizes external factors as stressors, and Selye's Model of Stress mainly centers on the physiological response to stress.

3. When giving an intramuscular injection to an infant, which of the following sites is preferred?

Correct answer: C

Rationale: The correct answer is the Vastus lateralis when giving an intramuscular injection to an infant. The Vastus lateralis muscle, located in the thigh, is the preferred site for infants as it has a larger muscle mass and is well-developed, making it suitable for injections. The Ventrogluteal region and Dorsogluteal region are not recommended for infants due to their smaller muscle mass and potential risk of damaging nearby structures. The Deltoid muscle is typically used for older children and adults, not infants.

4. A 3-day post-operative client with a Left Knee Replacement is complaining of being chilled and nauseated. Her TPR is 100.4-94-28 and Blood Pressure is 146/90. What is the nurse's best action?

Correct answer: A

Rationale: The correct answer is to call the surgeon immediately. The client's symptoms of being chilled and nauseated, along with an elevated temperature (100.4�F), could indicate an infection following the knee replacement surgery. In this scenario, prompt action is crucial to prevent any potential complications. Calling the surgeon allows for further assessment, possible diagnostic tests, and appropriate interventions to be initiated. Administering Tylenol or offering blankets and fluids may temporarily alleviate symptoms but do not address the underlying issue of a potential infection. Assessing the surgical site is important but not as urgent as involving the surgeon in this situation.

5. When preparing a client for platelet pheresis in the blood bank, which information is most significant to obtain during the history assessment?

Correct answer: B

Rationale: The most significant information to gather when a client is scheduled for platelet pheresis is the date of their last platelet donation. Platelet donors can typically have their platelets apheresed as frequently as every 14 days. Knowing the date of the last donation helps ensure the client is eligible for the procedure without risking any adverse effects from frequent donations. Allergies to shellfish may be important for other procedures where anticoagulants containing heparin are used, but it is not directly related to platelet pheresis. The time of the last oral intake is more crucial for procedures requiring sedation or anesthesia. Blood type is significant for blood transfusions but is not the primary concern for platelet pheresis.

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