ATI RN
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ATI Nursing 100 Day Exam 4 Fundamentals Questions
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Question
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1 of 5
The nursing assessment finding that represents the most serious indication of a client's deteriorating oxygenation status is:
Correct Answer: C
Rationale: Cyanosis (bluish skin/mucous membranes) indicates severe oxygenation failure due to inadequate oxygen delivery reflecting critical hypoxia. Pursed-lip breathing is compensatory clubbing is chronic and skin turgor relates to hydration not oxygenation.
Question 2 of 5
The nurse is giving vancomycin to a client and must hold the dose until the results of the trough level are known. This term is associated with the point at which the:
Correct Answer: C
Rationale: Trough level refers to the lowest drug concentration in the blood before the next dose ensuring therapeutic levels without toxicity. It is not about half-life (related to elimination) toxicity or peak concentration which occurs shortly after administration.
Question 3 of 5
In providing care for clients the nurse knows that the normal stimulus to breathe is a/an:
Correct Answer: C
Rationale: Increased carbon dioxide levels stimulate the respiratory center in the medulla to trigger breathing by detecting pH changes in the blood. Decreased CO2 or oxygen levels and increased oxygen are not primary stimuli as the body prioritizes CO2 clearance to maintain acid-base balance.
Question 4 of 5
The nurse knows that which form of medication delivery results in the most predictable onset and most bioavailability to the client?
Correct Answer: A
Rationale: Intravenous delivery provides immediate onset and 100% bioavailability by directly entering the bloodstream bypassing barriers like the gastrointestinal tract or skin. Oral routes face first pass metabolism subcutaneous absorption varies with tissue and transdermal has slow onset due to skin diffusion.
Question 5 of 5
Which nursing action is most helpful in thinning a client's thick respiratory secretions?
Correct Answer: D
Rationale: Adequate fluid intake thins respiratory secretions by promoting hydration and mobilizing mucus reducing viscosity and aiding expectoration. Oxygen therapy supports oxygenation but not secretion thinning consistent air temperature has minimal impact and supine positioning may worsen secretion clearance by promoting stasis.