the chain of infection includes the

NCLEX-RN

Exam Cram NCLEX RN Practice Questions

1. The chain of infection includes the ________________.

A. germ, agent, reservoir, exit portal, mode of transmission, entry port, and susceptible host
B. active natural, active artificial, passive natural, and passive artificial
C. opportunism, weakness, immunity, and colonization
D. intrinsic, extrinsic, internal, and external transmission

Correct answer: A

Rationale: The chain, or cycle, of infection includes the germ (microorganism), agent, reservoir, exit portal, mode of transmission, entry port, and susceptible host. This sequence describes how infections are passed from one person to another. Choice B is incorrect because it refers to types of immunity, not components of the chain of infection. Choice C is also incorrect as it lists terms unrelated to the chain of infection. Choice D is incorrect as it describes transmission types, not components of the chain of infection. Understanding the chain of infection is crucial in preventing the spread of infections by breaking one or more links in the chain, such as interrupting the mode of transmission through proper hand hygiene.

2. The nurse is discussing the need for early diagnosis and treatment of autism spectrum disorder (ASD) with parents of children suspected of having the condition. Which statement should the nurse include?

A. Early diagnosis and treatment provide the only means for a cure of ASD.
B. Early diagnosis and treatment gives your child the best chance of becoming a fully functioning adult.
C. Early diagnosis and treatment provides the best way to ensure that your child can be admitted to an assisted living facility as an adult.
D. Early diagnosis and treatment prevent your child from developing any other mental condition.

Correct answer: B

Rationale: The correct statement for the nurse to include is that early diagnosis and treatment provide the best chance for the child to become a fully functioning adult. It is important to educate parents that while early intervention can improve outcomes for individuals with ASD, it does not offer a cure but helps in managing symptoms and developing necessary skills. Choice A is incorrect as there is currently no cure for ASD. Choice C is inaccurate as early diagnosis and treatment focus on improving the child's quality of life and independence rather than ensuring admission to an assisted living facility. Choice D is incorrect as early diagnosis and treatment of ASD do not prevent the development of other mental health conditions; however, they can help in identifying and managing such conditions early on.

3. A nurse is assessing a client's pulse oximetry on the surgical unit. As part of routine interventions, the nurse turns off the exam light over the client's bed. Which of the following best describes the rationale for this intervention?

A. External light sources may cause falsely high oximetry values
B. A bright light in the client's face may cause a low pulse oximetry
C. External light sources may cause falsely low oximetry values
D. The client needs a dark and quiet room to recover and maintain proper oxygenation

Correct answer: A

Rationale: When assessing a client's pulse oximetry values, the nurse should turn off any extra environmental lights that are unnecessary, including exam lights or over-bed lights. External light sources may cause falsely high oximetry values when the extra light interferes with the sensor of the oximeter, leading to inaccurate readings. Choice B is incorrect because a bright light in the client's face would not directly affect the pulse oximetry values. Choice C is incorrect as external light sources typically cause falsely high, not low, oximetry values. Choice D is incorrect as the primary reason for turning off the light is to prevent falsely high readings, not solely for the client's comfort.

4. In which situation might an occupational health nurse consultation be necessary?

A. A nurse is injured from using incorrect body mechanics to lift a client
B. A nurse receives a subpoena to testify in court about a client's case
C. A client who has been injured in a diving accident needs assistance with planning rehabilitation and surgery
D. A nursing unit is implementing a new electronic health record system

Correct answer: A

Rationale: An occupational health nurse is involved in assessing the work environment, educating employees about safety practices, and infection control. When a nurse sustains an injury due to incorrect body mechanics, it falls under the purview of an occupational health nurse because they are responsible for documenting such incidents, providing necessary care or treatment, and ensuring that preventive measures are in place to avoid similar accidents in the future. The other options do not directly relate to the role of an occupational health nurse. Testifying in court, assisting a client with rehabilitation, or implementing a new electronic health record system are not typical scenarios where an occupational health nurse would be involved.

5. Mr. N is a client who entered the hospital with a diagnosis of diabetic ketoacidosis. The nurse enters his room to check his vital signs and finds him breathing at a rate of 32 times per minute; his respirations are deep and regular. Which type of respiratory pattern is Mr. N most likely exhibiting?

A. Kussmaul respirations
B. Cheyne-Stokes respirations
C. Biot's respirations
D. Cluster breathing

Correct answer: A

Rationale: Mr. N is exhibiting Kussmaul respirations, characterized by rapid, deep, and regular breathing. This type of respiratory pattern is commonly seen in metabolic acidosis, such as in diabetic ketoacidosis. Kussmaul respirations are a form of hyperventilation, leading to the elimination of carbon dioxide from the body. Choice B, Cheyne-Stokes respirations, is characterized by alternating periods of deep, rapid breathing followed by periods of apnea and is not typically associated with diabetic ketoacidosis. Choice C, Biot's respirations, involve irregular breathing patterns with periods of apnea and are not reflective of the described breathing pattern. Cluster breathing, as mentioned in Choice D, is not a recognized term in respiratory patterns and does not describe the breathing pattern observed in Mr. N.