which of the following is an example of a positive effect of exercise on a client

NCLEX-RN

NCLEX RN Exam Prep

1. Which of the following is an example of a positive effect of exercise on a client?

A. Decreased basal metabolic rate
B. Decreased venous return
C. Decreased work of breathing
D. Decreased gastric motility

Correct answer: C

Rationale: The correct answer is 'Decreased work of breathing.' Exercise has numerous positive effects on clients, such as increasing metabolic rate, improving gastric motility, and enhancing venous return. When a client exercises regularly, their work of breathing decreases, meaning that everyday activities require less exertion. This is beneficial as it indicates improved cardiovascular and respiratory efficiency. Choices A, B, and D are incorrect because a decreased basal metabolic rate, decreased venous return, and decreased gastric motility are not typically considered positive effects of exercise. Instead, an increased basal metabolic rate, improved venous return, and optimal gastric motility are desired outcomes associated with physical activity.

2. Which is the most effective action for controlling the spread of infection?

A. Thorough hand hygiene
B. Wearing gloves and masks when providing direct client care
C. Implementing appropriate isolation precautions
D. Administering broad-spectrum prophylactic antibiotics

Correct answer: A

Rationale: Thorough hand hygiene is the most effective action for controlling the spread of infection as hands are a common source of transmission. Regular and routine hand hygiene helps prevent the movement of potentially infective materials. Wearing gloves and masks is important when providing direct client care to protect both the caregiver and the patient, but it is not as effective as thorough hand hygiene in preventing overall infection spread. Implementing appropriate isolation precautions is necessary for clients with known communicable diseases, but it is not as universally effective in preventing the spread of various infections. Administering broad-spectrum prophylactic antibiotics is not an appropriate measure for controlling the spread of infection as routine use can lead to superinfection and the development of resistant organisms.

3. Which of the following is an example of emotional abuse?

A. A slap to the person's hand
B. Threatening the person
C. Ignoring and isolating a person
D. Leaving a patient soiled for hours

Correct answer: C

Rationale: Emotional abuse involves behaviors that harm an individual's self-worth and emotional well-being. Threatening someone instills fear and causes psychological distress, making it a clear example of emotional abuse. Choices A, C, and D involve physical abuse, neglect, and neglect of care, respectively, rather than emotional abuse. A slap to the person's hand constitutes physical abuse, ignoring and isolating a person is neglectful behavior, and leaving a patient soiled for hours falls under neglect of care.

4. When printing out an EKG, a nurse notices that the QRS complexes are extremely small. What should be the next step?

A. Alert the physician immediately as this is a sign of impending cardiac arrest.
B. Check to see that all leads are attached and rerun the EKG.
C. Increase the sensitivity control to 20 mm deflection.
D. Decrease the run speed to 50.

Correct answer: C

Rationale: Increasing the sensitivity control to 20 mm deflection will double the sensitivity, allowing for better observation of the small QRS complexes. This step is crucial in obtaining a clearer EKG reading. Choice A is incorrect because small QRS complexes do not necessarily indicate impending cardiac arrest; it's more likely a technical issue. Choice B is not the first step to take when small QRS complexes are observed; it's important to adjust the settings first. Choice D is incorrect because decreasing the run speed to 50 is not the appropriate action for this situation; adjusting the sensitivity control is more relevant to improve the visualization of the complexes.

5. A patient's blood pressure is 118/82 mm Hg. The patient asks the nurse, "What do the numbers mean?"? Which is the best reply by the nurse?

A. "The numbers are within the normal range and are nothing to worry about."?
B. "The bottom number is the diastolic pressure and reflects the pressure in the arteries when the heart relaxes."?
C. "The top number is the systolic blood pressure and reflects the pressure of the blood against the arteries when the heart contracts."?
D. "The concept of blood pressure can be complex. The primary thing to be concerned about is the top number, or the systolic blood pressure."?

Correct answer: C

Rationale: The systolic pressure is the maximum pressure felt on the artery during left ventricular contraction, or systole. The diastolic pressure is the elastic recoil, or resting, pressure that the blood constantly exerts in between each contraction. The nurse should answer the patient's question in terms they can understand and not just say it is normal and there is nothing to worry about. The diastolic pressure is the pressure in the vessels when the heart is at rest, not the stroke volume. Both the systolic and diastolic blood pressure are important. Choice A is incorrect as providing a vague reassurance does not address the patient's query. Choice B is incorrect as it inaccurately describes the diastolic pressure as reflecting stroke volume, which is incorrect. Choice D is incorrect as it oversimplifies the explanation, focusing solely on the top number without providing a complete understanding of blood pressure.