Nokea
Continuous venovenous hemofiltration is used to
- A. remove fluids and solutes through the process of convection.
- B. remove plasma water in cases of volume overload.
- C. remove plasma water and solutes by adding dialysate.
- D. combine ultrafiltration, convection, and dialysis.
Correct Answer: A
Rationale: The correct answer is A because continuous venovenous hemofiltration (CVVH) primarily removes fluids and solutes through the process of convection. In CVVH, blood flows through a filter where hydrostatic pressure drives plasma water and solutes across a semipermeable membrane. This process mimics the natural filtration that occurs in the kidneys. Choice B is incorrect because CVVH does not specifically target plasma water only but also removes solutes. Choice C is incorrect because CVVH does not involve adding dialysate to remove plasma water and solutes. Choice D is incorrect because while CVVH may involve ultrafiltration and convection, it does not typically include dialysis as a primary mechanism for solute removal.
You may also like to solve these questions
The nurse is caring for a 70-kg patient in septic shock with a pulmonary artery catheter. Which hemodynamic value indicates an appropriate response to therapy aimed at enhancing oxygen delivery to the organs and tissues?
- A. Arterial lactate level of 1.0 mEq/L
- B. Cardiac output of 2.5 L/min
- C. Mixed venous (SvO ) of 40%
- D. Cardiac index of 1.5 L/min/m2
Correct Answer: C
Rationale: The correct answer is C: Mixed venous (SvO2) of 40%. In septic shock, improving oxygen delivery to tissues is vital. SvO2 reflects the balance between oxygen delivery and consumption. A value of 40% indicates adequate oxygen delivery to tissues.
A: Arterial lactate level of 1.0 mEq/L - Although a low lactate level is good, it does not directly indicate improved oxygen delivery.
B: Cardiac output of 2.5 L/min - Cardiac output should ideally increase to improve oxygen delivery, so 2.5 L/min is low for a 70-kg patient.
D: Cardiac index of 1.5 L/min/m2 - Cardiac index is cardiac output adjusted for body surface area. 1.5 L/min/m2 is low and indicates inadequate cardiac function for a patient in septic shock.
Which acid-base disturbances commonly occurs with the hyperventilation and impaired gas exchange seen in severe exacerbation of asthma?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory acidosis
- D. Respiratory alkalosis
Correct Answer: D
Rationale: The correct answer is D: Respiratory alkalosis. Hyperventilation in severe asthma exacerbation leads to excessive removal of CO2, causing a decrease in carbonic acid levels, resulting in respiratory alkalosis. Metabolic acidosis (A) is not typically associated with hyperventilation. Metabolic alkalosis (B) is caused by excessive loss of acid or gain of bicarbonate, not by hyperventilation. Respiratory acidosis (C) is characterized by an increase in CO2 levels due to inadequate ventilation, which is the opposite of what occurs in severe asthma exacerbation.
Which statement is a likely response from someone who h as survived a stay in the critical care unit?
- A. “I don’t remember much about being in the ICU, but if I had to be treated there again, it would be okay. I’m glad I can see my grandchildren again.”
- B. “If I get that sick again, do not take me to the hospital. I would rather die than go through having a breathing tube put in again.”
- C. “My family is thrilled that I am home. I know I need some extra attention, but my children have rearranged their schedules to help me ou t.”
- D. “Since I have been transferred out of the ICU, I cannot get enough to eat. They didn’t let me eat in the ICU, so I’m making up for it no w.”
Correct Answer: A
Rationale: Rationale: Choice A is the correct answer because it reflects a positive attitude towards potential future treatments in the critical care unit and gratitude for being able to see family again. The survivor acknowledges the past experience but remains optimistic.
Summary:
- Choice B is incorrect as it shows a strong aversion to hospital care, indicating a preference for death over treatment.
- Choice C is incorrect as it focuses on the family's reaction and not the survivor's personal experience or perspective.
- Choice D is incorrect as it highlights a trivial aspect (eating) rather than reflecting on the ICU experience or future treatments.
The transplant clinic coordinator is evaluating relatives of a patient with end-stage renal disease, whose blood type is A positive, for suitability as aa bliirvb.icnogm /dteostn or for kidney transplantation. Which family member best qualifies for evaluation?
- A. A 65-year-old brother with a history of hypertension; b lood type A positive
- B. A 35-year-old female with a history of food allergies; blood type O negative
- C. A 14-year-old son, otherwise healthy with no history; blood type B negative
- D. A 70-year-old mother, with a history of sinus infection s; blood type A positive
Correct Answer: D
Rationale: The correct answer is D, the 70-year-old mother with blood type A positive. This choice is the best candidate for evaluation due to her blood type matching the patient's (A positive) for kidney transplantation. Age and medical history are also crucial factors in determining suitability. The 65-year-old brother (choice A) has hypertension, a significant risk factor. The 35-year-old female (choice B) with food allergies may have potential complications. The 14-year-old son (choice C) is underage and might not be a suitable donor due to age and the potential impact on his growth and development. In summary, choice D aligns with the matching blood type and age, making the mother the most suitable candidate for evaluation.
A nurse who works in an intermediate care unit has experienced high nursing turnover. The nurse manager is often considered to be an autocratic leade r by staff members and that leadership style is contributing to turnover. The nurse asks to be involved in developing new guidelines to prevent pressure ulcers in the patient populat ion. The nurse manager suggests that the nurse has not yet had enough experience to be on tahbierb p.croemv/teenstt ion task force. This situation and setting is an example of what form of ineffec tive leadership?
- A. Creating a barrier to inter-staff communication.
- B. Supporting a work environment that is unhealthy.
- C. Displaying ineffective decision making.
- D. Demonstrating nursing practice that is not evidence-based.
Correct Answer: C
Rationale: The correct answer is C: Displaying ineffective decision making. In this scenario, the nurse manager's decision to exclude the nurse from participating in developing new guidelines is an example of ineffective decision making. By dismissing the nurse's request based on lack of experience rather than considering their input and involvement, the manager is not utilizing the nurse's expertise and potentially missing out on valuable insights. This decision reflects a lack of inclusivity, collaboration, and respect for the nurse's professional growth and potential contributions. The other choices are not directly applicable in this context as the core issue lies in the manager's decision-making process.