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Zorluk: OrtaReduction of Risk Potential

A nurse is caring for a client who is mechanically ventilated in the intensive care unit following abdominal surgery. The ventilator's high-pressure alarm has been sounding frequently. The client's latest arterial blood gas (ABG) results are provided in the table below:

ParameterResultReference Range
pH7.267.267.357.35 - 7.457.45
PaCO2\text{PaCO}_260 mm Hg60 \text{ mm Hg}3535 - 45 mm Hg45 \text{ mm Hg}
HCO3−\text{HCO}_3^-24 mEq/L24 \text{ mEq/L}2222 - 26 mEq/L26 \text{ mEq/L}
PaO2\text{PaO}_265 mm Hg65 \text{ mm Hg}8080 - 100 mm Hg100 \text{ mm Hg}

Which intervention should the nurse implement first to reduce the risk of further physiological decompensation?

  1. Auscultate bilateral lung sounds and perform endotracheal suctioning.Cevap
  2. B
    Administer a prescribed intravenous dose of sodium bicarbonate.
  3. C
    Place the client in a flat, supine position to equalize chest expansion.
  4. D
    Increase the continuous intravenous fluid infusion rate.

Cevap

The correct intervention is to auscultate bilateral lung sounds and perform endotracheal suctioning.
The client is experiencing uncompensated respiratory acidosis, as evidenced by a low pH and an elevated PaCO2, along with hypoxemia. In a mechanically ventilated client, frequent high-pressure alarms combined with these ABG changes strongly suggest an airway obstruction, such as accumulated mucus or secretions. Auscultating the lungs and suctioning the endotracheal tube clears the airway, improves effective ventilation, and directly addresses the underlying cause of both the high peak pressures and the retained carbon dioxide.

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1
Analyze the provided ABG results.
The ABG shows uncompensated respiratory acidosis (low pH, high PaCO2, normal HCO3) accompanied by hypoxemia (low PaO2).
Identifying the primary acid-base imbalance is necessary to determine the physiological root cause.
2
Correlate the ABG findings with the clinical data.
The combination of respiratory acidosis and frequent high-pressure ventilator alarms indicates increased airway resistance, likely due to an obstruction such as accumulated secretions.
High-pressure alarms trigger when the ventilator meets excessive resistance while delivering a breath, which commonly leads to poor ventilation and CO2 retention.
3
Determine the highest priority nursing intervention.
Auscultating the lungs and suctioning the endotracheal tube is the priority action.
Removing the physical obstruction clears the airway, allows for adequate alveolar ventilation, and directly resolves both the high-pressure alarm and the respiratory acidosis.

Anahtar Kavram

Airway Management and ABG Interpretation in Mechanical Ventilation
Tahmini Süre:1m 30s
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Konular

Reduction of Risk Potential

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