A patient is admitted to the emergency department (ED) for shock of unknown etiology. The first action by the nurse should be to
obtain the blood pressure.
Check the level of consciousness.
administer oxygen.
obtain a 12-lead electrocardiogram (ECG).
The Correct Answer is B
Assessing the patient's level of consciousness is a critical initial step in evaluating a patient with shock. Altered mental status or decreased level of consciousness can be indicative of inadequate cerebral perfusion and may require immediate interventions to address compromised brain function and ensure patient safety.
While all the options mentioned are important in the assessment and management of a patient in shock, checking the level of consciousness takes priority as it provides essential information about the patient's neurological status and helps guide further interventions.
A. Obtaining the blood pressure in (option A) is incorrect because Assessing blood pressure is crucial in evaluating a patient in shock, but it can be done in conjunction with checking the level of consciousness and other vital signs.
C. Administering oxygen in (option C) is incorrect because: Administering oxygen is important in managing shock, as tissue hypoxia is a key concern. However, it can be done simultaneously with assessing the level of consciousness and initiating other interventions.
D. Obtaining a 12-lead electrocardiogram (ECG) in (option D) is incorrect because While an ECG may provide valuable information about the patient's cardiac function, it is not the first priority in a patient with shock of unknown etiology. Assessing the level of consciousness and vital signs takes precedence.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The nurse should listen over both lung fields to ensure that air entry is present bilaterally, indicating that the tube is correctly positioned in the trachea. This comes after observing chest movements.
B. Using an end-tidal CO2 monitor to check for placement in the trachea in (option B) is incorrect because End-tidal CO2 monitoring can provide confirmation of correct tube placement in the trachea by detecting exhaled CO2 levels. However, it requires additional equipment and setup, which may not be readily available at the bedside or immediately accessible.
C. Observing the chest for symmetrical movement with ventilation is the initial action after placing an endotracheal tube.
D. Obtaining a portable chest radiograph to check tube placement (option D) is incorrect because Chest radiographs are commonly used to confirm endotracheal tube placement, especially for long-term confirmation or if there are concerns about placement. However, obtaining a portable chest radiograph may involve delays and is not the initial action to be taken for immediate verification.
Therefore, the best initial action by the nurse to verify the correct placement of an endotracheal tube (ET) after insertion is to auscultate for the presence of bilateral breath sounds.

Correct Answer is B
Explanation
Lactate is a by-product of anaerobic metabolism that accumulates when there is insufficient oxygen supply to meet cellular metabolic demands. In the context of severe tissue hypoxia, such as in septic shock, the body may resort to anaerobic metabolism, leading to increased lactate production and elevated lactate levels in the blood.
Elevated lactate levels, typically above 4.0 mmol/L, are indicative of tissue hypoxia and inadequate oxygenation at the cellular level. Higher lactate levels, such as 9.0 mmol/L, suggest more severe tissue hypoxia and increased anaerobic metabolism.
A. Partial thromboplastin time (PTT) 64 seconds in (option A) is incorrect because: PTT is a laboratory test that evaluates the intrinsic pathway of the coagulation cascade. While coagulation abnormalities may occur in septic shock, PTT alone does not specifically indicate severe tissue hypoxia.
C. Potassium 2.8 mEq/L (2.8 mmol/L) (option C) is incorrect because Low potassium levels (hypokalemia) can be a concern in septic shock, but it does not directly indicate severe tissue hypoxia.
D. PaCO2 58 mm Hg in (option D) is incorrect because: PaCO2 refers to the partial pressure of carbon dioxide in arterial blood and is a measure of the respiratory status. While an elevated PaCO2 can be a sign of respiratory acidosis, it is not specific to severe tissue hypoxia.
Therefore, in a critically ill patient with septic shock, an elevated lactate level, such as 9.0 mmol/L, indicates severe tissue hypoxia and inadequate oxygenation at the cellular level
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