Exhibits
Click to mark whether the actions are indicated, contraindicated, or nonessential for this client. Each row must have one option selected.
Increase the fraction of inspired oxygen
Collect equipment for a needle aspiration
Replace the ventilator
Measure the nasogastric tube output
Place the client in Trendelenburg
The Correct Answer is {"A":{"answers":"A"},"B":{"answers":"B"},"C":{"answers":"C"},"D":{"answers":"A"},"E":{"answers":"B"}}
- Increase the fraction of inspired oxygen (FiO₂). The client has severe COVID pneumonia and is on mechanical ventilation with high inspiratory pressures, suggesting acute respiratory distress syndrome (ARDS). Increasing FiO₂ is indicated if oxygenation is inadequate (e.g., low PaO₂ or SpO₂). However, oxygen toxicity should be avoided, so adjustments should be made based on arterial blood gases (ABGs) and oxygen saturation.
- Collect equipment for a needle aspiration. Needle aspiration is typically used for pneumothorax management, but there is no mention of clinical signs such as sudden hypotension, absent breath sounds, or tracheal deviation. While ventilated COVID-19 patients are at risk for barotrauma, this procedure is not justified without evidence of pneumothorax.
- Replace the ventilator. There is no indication that the ventilator is malfunctioning or that the settings are inappropriate. If ventilation issues arise (e.g., high plateau pressures, auto-PEEP, or ventilator asynchrony), adjustments to settings, sedation, or lung-protective strategies should be considered before replacing the ventilator.
- Measure the nasogastric tube output. The client is intubated and sedated, meaning they cannot protect their airway or tolerate oral intake. A nasogastric (NG) tube is commonly placed for gastric decompression and feeding. Monitoring NG output is essential to assess for gastrointestinal bleeding, ileus, or high residual volumes, which can affect feeding tolerance.
- Place the client in Trendelenburg. The Trendelenburg position increases the risk of aspiration, impairs lung expansion, and worsens ventilation-perfusion mismatch, especially in ARDS patients. Instead, prone positioning is often preferred in severe COVID pneumonia to improve oxygenation and alveolar recruitment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Suction subglottic area above the ETT cuff before entering the ETT. While subglottic suctioning helps prevent ventilator-associated pneumonia (VAP) by removing pooled secretions, it does not directly improve oxygenation during deep endotracheal suctioning. The priority is to optimize oxygenation before and after suctioning.
B. Use the ventilator settings to stack breaths prior to suctioning. Pre-oxygenating the client by delivering additional breaths via the ventilator helps prevent hypoxia during suctioning. Closed suction systems momentarily interrupt airflow, which can lead to oxygen desaturation. Providing 100% FiO₂ for 30–60 seconds before suctioning helps ensure adequate oxygenation and reduces complications.
C. Rinse suction catheters with normal saline between each suction pass. Flushing the catheter keeps it clean and patent, but it does not enhance oxygenation. Normal saline instillation before suctioning is not recommended, as it can increase infection risk and worsen secretion mobilization.
D. Suction for 30 seconds with each pass of the suction catheter. Prolonged suctioning can cause severe hypoxia, bradycardia, and airway trauma. Suction passes should be limited to 10–15 seconds to minimize complications. If additional suctioning is needed, the client should be reoxygenated between passes.
Correct Answer is ["C","D"]
Explanation
A. Low PaO2. Clients with DKA do not typically have significant hypoxemia unless there is concurrent respiratory compromise. The primary issue in DKA is metabolic acidosis rather than oxygenation.
B. Low lactic acid. Lactic acidosis is not a hallmark of DKA. Instead, DKA is characterized by ketone production from fatty acid metabolism. Elevated lactic acid is more common in conditions like sepsis or tissue hypoxia.
C. Low pH. Diabetic ketoacidosis (DKA) causes metabolic acidosis due to the accumulation of ketone bodies, leading to a pH below 7.35. The absence of insulin results in unregulated lipolysis and ketogenesis, significantly lowering blood pH.
D. Low bicarbonate (HCO3-). In metabolic acidosis, bicarbonate acts as a buffer and gets depleted while neutralizing excess acids. Clients with DKA typically have a bicarbonate level below 18 mEq/L (18 mmol/L), confirming metabolic acidosis.
E. High PaCO2. In metabolic acidosis, respiratory compensation leads to hyperventilation (Kussmaul respirations), causing PaCO2 to decrease as the body attempts to blow off excess CO2 to normalize pH.
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