ATI RN
ATI Advanced Med Surg Exam 3 Questions
Extract:
Question 1 of 5
A nurse is interpreting a client's ECG strip. Which of the following components of the ECG should the nurse examine to determine the time it takes for ventricular depolarization and repolarization?
Correct Answer: B
Rationale: The QT interval measures the time for ventricular depolarization and repolarization, from QRS onset to T wave end.
Extract:
pH 7.22
PaCO2 68 mm Hg
Base excess-2 PaO2 78 mm Hg
Saturation 80%
Bicarbonate 26 mEq/L
Question 2 of 5
A client is admitted to the emergency room with a respiratory rate of 7/min. Arterial blood gases (ABG) reveal the following values. Which of the following is an appropriate analysis of the ABGS?
Correct Answer: C
Rationale: Low pH and elevated PaCO2 indicate respiratory acidosis due to hypoventilation retaining carbon dioxide.
Extract:
Question 3 of 5
When admitting a patient with possible respiratory failure and a high PaCO2, which assessment information should be immediately reported to the health care provider?
Correct Answer: B
Rationale: Somnolence indicates potential respiratory depression or hypercapnia, a critical sign of worsening respiratory failure requiring immediate reporting.
Question 4 of 5
A nurse is preparing a client for transfer to the ICU for placement of a pulmonary artery catheter. The nurse should explain to the client that this catheter is used to monitor which of the following conditions?
Correct Answer: D
Rationale: A pulmonary artery catheter monitors hemodynamic status, providing data on cardiac output, pulmonary pressures, and preload.
Question 5 of 5
A client with acute respiratory distress syndrome (ARDS) shows no improvement despite increases in concentration in oxygen administered. What intervention should the nurse attempt which may improve ventilation-perfusion matching?
Correct Answer: A
Rationale: Prone positioning improves ventilation-perfusion matching in ARDS by redistributing ventilation to better-perfused lung regions.