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Question 19CORRECTTo assess the kidney function of a patient with an indwelling urinary (Foley) catheter, the nurse measures his hourly urine output. She should notify the physician if the urine output is:Less than 30 ml/hour64 ml in 2 hours90 ml in 3 hours125 ml in 4 hoursQuestion 19 Explanation: Option A: A urine output of less than 30ml/hour indicates hypovolemia or oliguria, which is related to kidney function and inadequate fluid intake.Question 20CORRECTAn additional Vitamin C is required during all of the following periods except:InfancyYoung adulthood
ChildhoodPregnancyQuestion 20 Explanation: Option B: Additional Vitamin C is needed in growth periods, such as infancy and childhood, and during pregnancy to supply demands for fetal growth and maternal tissues. Other conditions requiring extra vitamin C include wound healing, fever, infection and stress.Question 21WRONGThe most common deficiency seen in alcoholics is:ThiamineRiboflavinPyridoxinePantothenic acidQuestion 21 Explanation: Option A: Chronic alcoholism commonly results in thiamine deficiency and other symptoms of malnutrition.Question 22CORRECT
A prescribed amount of oxygen s needed for a patient with COPD to prevent:Cardiac arrest related to increased partial pressure of carbon dioxide in arterial blood (PaCO2)Circulatory overload due to hypervolemiaRespiratory excitementInhibition of the respiratory hypoxic stimulusQuestion 22 Explanation: Option D: Delivery of more than 2 liters of oxygen per minute to a patient with chronic obstructive pulmonary disease (COPD), who is usually in a state of compensated respiratory acidosis (retaining carbon dioxide (CO2)), can inhibit the hypoxic stimulus for respiration. Option A: An increased partial pressure of carbon dioxide in arterial blood (PACO2) would not initially result in cardiac arrest. Options B and C: Circulatory overload and respiratory excitement have no relevance to the question.Question 23CORRECTExamples of patients suffering from impaired awareness include all of the following except:A semiconscious or overfatigued patientA disoriented or confused patient
A patient who cannot care for himself at homeA patient demonstrating symptoms of drugs or alcohol withdrawalQuestion 23 Explanation: Option C: A patient who cannot care for himself at home does not necessarilyhave impaired awareness; he may simply have some degree of immobility.Question 24WRONGAll of the following can cause tachycardia except:FeverExerciseSympathetic nervous system stimulationParasympathetic nervous system stimulationQuestion 24 Explanation: Option D: Parasympathetic nervous system stimulation of the heart decreases the heart rate as well as the force of contraction, rate of impulse conduction and blood flow through the coronary vessels. Fever, exercise, andsympathetic stimulation all increase the heart rate.