A client with diabetes mellitus is ordered to receive insulin for glucose correction (sliding scale coverage). The nurse knows the rapid acting insulin Insulin Lispro (Humalog) onset and peak action time are:
30 minute onset; 2 hour duration
15 minute onset; 30-60 minutes peak
2 hour onset; 12 hour duration
15 minute onset; no peak (continuous)
The Correct Answer is B
A. 30 minute onset; 2-hour duration: This does not accurately represent the onset and peak action time of Insulin Lispro.
B. 15 minute onset; 30-60 minutes peak: This is correct. Insulin Lispro has a rapid onset (starts working within 15 minutes) and a peak action time of 30-60 minutes after administration.
C. 2-hour onset; 12-hour duration: This is not accurate for rapid-acting insulin. Rapid-acting insulin has a much quicker onset and shorter duration compared to this option.
D. 15 minute onset; no peak (continuous): While the onset time is correct, stating "no peak" is not entirely accurate. Rapid-acting insulin does have a peak, but it's relatively short, occurring within the first hour after administration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Aspirin Toxicity:
Effect on Blood Gases: Aspirin toxicity can cause respiratory alkalosis due to increased respiratory rate (hyperventilation), leading to a decreased PaCO2 and increased pH.
Relation to Given Blood Gases: It could potentially cause the observed blood gas values (low PaCO2 and high pH), making it a possible cause.
B. Fever:
Effect on Blood Gases: Fever might cause hyperventilation, resulting in respiratory alkalosis with decreased PaCO2 and increased pH.
Relation to Given Blood Gases: It could potentially cause the observed blood gas values.
C. Anxiety Attack:
Effect on Blood Gases: Anxiety attacks can lead to hyperventilation and subsequent respiratory alkalosis with low PaCO2 and high pH.
Relation to Given Blood Gases: It could potentially cause the observed blood gas values.
D. Chronic Obstructive Pulmonary Disease (COPD):
Effect on Blood Gases: COPD typically causes respiratory acidosis due to impaired gas exchange, resulting in elevated PaCO2 and decreased pH.
Relation to Given Blood Gases: COPD wouldn't typically cause the observed blood gas values of low PaCO2 and high pH.
Correct Answer is A
Explanation
A. Metabolic Alkalosis:
pH: Elevated (alkalotic).
PaCO2: Normal or slightly decreased (compensation may or may not be present).
HCO3: Elevated.
Explanation: Metabolic alkalosis is characterized by an excess of bicarbonate (HCO3) in the blood, leading to an elevated pH. In this case, the elevated pH and HCO3 levels suggest that the primary imbalance is metabolic alkalosis.
B. Respiratory Alkalosis:
pH: Elevated (alkalotic).
PaCO2: Decreased (due to hyperventilation, which blows off CO2).
HCO3: Normal or slightly decreased (compensation).
Explanation: Respiratory alkalosis is characterized by low levels of carbon dioxide (PaCO2) due to hyperventilation. However, in the provided ABG, the PaCO2 is not significantly decreased, suggesting that respiratory alkalosis is not the primary issue.
C. Respiratory Acidosis:
pH: Decreased (acidotic).
PaCO2: Increased (due to inadequate ventilation).
HCO3: Normal or slightly elevated (compensation).
Explanation: Respiratory acidosis is characterized by an increase in carbon dioxide (PaCO2) levels. In this case, the PaCO2 is within the normal range, indicating that respiratory acidosis is not the primary problem.
D. Metabolic Acidosis:
pH: Decreased (acidotic).
PaCO2: Normal or slightly decreased (compensation).
HCO3: Decreased.
Explanation: Metabolic acidosis is characterized by a decrease in bicarbonate (HCO3) levels. In this ABG, the HCO3 is elevated, ruling out metabolic acidosis as the primary issue.
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