ATI LPN
Timby's Introductory Medical-Surgical Nursing Thirteenth, North American Edition
Chapter 17 : Caring for Clients in Shock Questions
Question 1 of 5
The student nurse is being precepted in the ICU. The student is caring for a client in the compensatory stage of shock who is hypovolemic. Which compensatory mechanism is most important in the re absorption and retention of fluid in the body?
Correct Answer: C
Rationale: Antidiuretic hormone (ADH) and corticosteroid hormones play an active role in controlling sodium and water balance. Both ADH and corticosteroid hormones promote fluid reabsorption and retention. The renin-angiotensin-aldosterone system is a mechanism that restores blood pressure (BP) when circulating volume is diminished. The release of catecholamines stimulates secretion of epinephrine and norepinephrine.
Question 2 of 5
The nurse is assessing a 6-year-old child in the emergency department (ED) who was brought in by the parent. The child was stung by a bee and is allergic to bee venom. The child is now having trouble breathing, and is vasodilated, hypotensive, and has broken out in hives. What does the nurse suspect is wrong with this child?
Correct Answer: B
Rationale: Anaphylactic shock is a severe allergic reaction that follows exposure to a substance to which a person is extremely sensitive (see Ch. 34). Common allergic substances include bee venom, latex, fish, nuts, and penicillin. The body's immune response to the allergic substance causes mast cells in the connective tissues, bronchi, and gastrointestinal tract to release histamine and other chemicals. The results are vasodilatation, increased capillary permeability accompanied by swelling of the airway and subcutaneous tissues, hypotension, and hives or an itchy rash. Cardiogenic shock, neurogenic shock, and obstructive shock would not begin with vasodilation, swelling of the airway, and hives.
Question 3 of 5
The nurse is caring for a client in the compensation stage of shock. The nurse knows that one of the body's mechanisms of compensation in this stage of shock is the renin- angiotensin-aldosterone system. What does this system do?
Correct Answer: D
Rationale: The renin-angiotensin-aldosterone system is a mechanism that restores blood pressure (BP) when circulating volume is diminished. It does not decrease peripheral blood flow, increase catecholamine secretion, or increase the production of antidiuretic hormone.
Question 4 of 5
A client presents to the ED in shock. At what point in shock does the nurse know that metabolic acidosis is going to occur?
Correct Answer: D
Rationale: The decompensation stage occurs as compensatory mechanisms fail. The client's condition spirals into cellular hypoxia, coagulation defects, and cardiovascular changes. As the energy supply falls below the demand, pyruvic and lactic acids increase, and pH decreases, causing metabolic acidosis.
Therefore, 'compensation', 'irreversible', and 'early' are incorrect.
Question 5 of 5
The nurse is caring for a motor vehicle accident client who is unresponsive on arrival to the emergency department. The client has numerous fractures, internal abdominal injuries, and large lacerations on the head and torso. The family arrives and seeks update on the client's condition. A family member asks, 'What causes the body to go into shock?' Given the client's condition, which statement is most correct?
Correct Answer: A
Rationale: Shock is a life-threatening condition that occurs when arterial blood flow and oxygen delivery to tissues and cells are inadequate. Hypovolemic shock, where the volume of extracellular fluid is significantly diminished due to the loss of or reduced blood or plasma, frequently occurs with accidents.