Ms. Jackson has been suffering from persistent vomiting for two days. She appears to be lethargic and weak and has myalgia. She is noted to have dry mucous membranes and her capillary refill time takes more than 4 seconds. She is diagnosed with gastroenteritis and dehydration. Measurement of arterial blood gas shows pH 7.5, PaO2 85 mm Hg, PaCO2 40 mm Hg, and HCO3 34 mmol/L. What acid base disorder is shown?
Metabolic Alkalosis, Partially Compensated
Respiratory Acidosis, Partially Compensated
Respiratory Alkalosis, Uncompensated
Metabolic Alkalosis, Uncompensated
The Correct Answer is D
Choice A reason: This choice is incorrect. Partial compensation would typically involve a change in PaCO2 to counterbalance the elevated bicarbonate, which is not observed here.
Choice B reason: This choice is incorrect. Respiratory acidosis is characterized by a low pH and an elevated PaCO2, which is not consistent with the given values.
Choice C reason: This choice is incorrect. Respiratory alkalosis would present with a low PaCO2 due to hyperventilation, which is not the case here.
Choice D reason: This is the correct choice. The elevated pH and HCO3 with a normal PaCO2 indicate metabolic alkalosis without respiratory compensation. Persistent vomiting can lead to loss of stomach acid, which causes metabolic alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: The blood should not be infusing for 5 hours as transfusions of packed RBCs should be completed within 2 to 4 hours to minimize the risk of bacterial growth and transfusion reactions.
Choice B reason: Medications should not be administered through the same IV line as blood products due to the risk of reactions and interactions.
Choice C reason: The packed RBCs are indeed connected by Tubing to normal saline, which is used to keep the line open and prevent clotting.
Choice D reason: The drip chamber should not be filled completely with blood as it is necessary to monitor the drip rate and to ensure that air does not enter the line.
Correct Answer is D
Explanation
Choice A reason: Maple syrup, while a source of energy, is not rich in iron or vitamins that can significantly contribute to increasing hemoglobin levels.
Choice B reason: Carrots are a good source of beta-carotene and fiber but are not particularly high in iron, which is necessary for increasing hemoglobin levels.
Choice C reason: Orange juice is rich in vitamin C, which can enhance iron absorption, but on its own, it does not contribute significantly to hemoglobin levels.
Choice D reason: Raisins are a good source of iron and can help increase hemoglobin levels. They are also convenient as a snack and can be easily incorporated into the diet.
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