A 45-year-old male presents to the emergency department after experiencing profuse vomiting and diarrhea for 3 days. His blood pressure is 90/60 mmHg, heart rate is 110 beats per minute, and mucous membranes are dry. Which of the following interventions should the nurse prioritize?
Encourage oral intake of water
Administer potassium-sparing diuretic
Restrict fluid intake
Administer IV bolus of normal saline
The Correct Answer is D
A. Encouraging oral intake may not be effective due to the patient's likely need for more rapid rehydration given his low blood pressure and heart rate.
B. A potassium-sparing diuretic is inappropriate in this situation, as the patient is already experiencing fluid loss and requires rehydration, not diuresis.
C. Restricting fluid intake would be contraindicated as the patient is in a state of dehydration and hypotension.
D. Administering an IV bolus of normal saline is the priority intervention to quickly restore fluid volume and improve blood pressure and hydration status.
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Correct Answer is B
Explanation
A. Respiratory alkalosis is characterized by a high pH and low PaCO2, which is not evident in this scenario where the pH is low and PaCO2 is elevated.
B. The low pH of 7.3 indicates acidemia, and the elevated PaCO2 of 50 mm Hg suggests respiratory acidosis, where the body is retaining carbon dioxide, leading to an increase in acidity.
C. Metabolic acidosis would present with a low pH and a normal or decreased PaCO2, which is not the case here since the PaCO2 is elevated.
D. Metabolic alkalosis would show a high pH and elevated HCO3 levels, which is not consistent with the given ABG results.
Correct Answer is C
Explanation
A. Fusion Inhibitors work by preventing the virus from entering the host's cells but do not inhibit RNA from forming DNA.
B. Integrase Inhibitors block the integration of viral DNA into the host's DNA but do not directly inhibit the reverse transcription process.
C. Nucleoside Reverse Transcriptase Inhibitors (NRTIs) inhibit reverse transcriptase, the enzyme responsible for converting viral RNA into DNA, thus directly targeting this crucial stage of the HIV lifecycle.
D. Protease Inhibitors inhibit the protease enzyme involved in the maturation of the virus but do not affect the reverse transcription process.