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Zorluk: OrtaReduction of Risk Potential

A 62-year-old client is admitted to the progressive care unit with severe right-sided lobar pneumonia. The client exhibits significant dyspnea, tachypnea, and a productive cough. Laboratory analysis of an arterial blood sample while the client is on 2 L/min of supplemental oxygen reveals a pH of 7.30, PaCO2 of 54 mm Hg, PaO2 of 58 mm Hg, and HCO3 of 25 mEq/L. To immediately optimize ventilation-perfusion matching and reduce the risk of worsening respiratory failure, which action should the nurse perform?

  1. Assist the client into the left lateral decubitus position.Cevap
  2. B
    Position the client in the right lateral decubitus position to promote drainage.
  3. C
    Prepare to administer intravenous sodium bicarbonate to correct the pH level.
  4. D
    Direct the unlicensed assistive personnel to increase the oxygen flow rate.

Cevap

The nurse should assist the client into the left lateral decubitus position to place the healthy lung in the dependent position.
The correct action is to place the client in the left lateral decubitus position. The client is experiencing acute hypoxemia and uncompensated respiratory acidosis due to right-sided pneumonia. To optimize ventilation-perfusion (V/Q) matching, the client should be placed with the healthy lung down. Gravity directs more pulmonary blood flow to the dependent left lung, which is well-ventilated, thereby immediately improving overall gas exchange and oxygenation.

Adım Adım Çözüm

1
Analyze the arterial blood gas values and respiratory assessment findings.
The client has acute uncompensated respiratory acidosis (low pH, high PaCO2) and significant hypoxemia (low PaO2) caused by right-sided pneumonia.
Identifying the physiological state is necessary to determine the appropriate immediate intervention.
2
Evaluate the relationship between positioning and pulmonary physiology in unilateral lung disease.
Gravity naturally directs greater pulmonary blood flow (perfusion) to the dependent, or lower, lung.
To maximize gas exchange, the lung with the best ventilation should receive the most blood flow.
3
Determine the optimal position for this specific client.
Placing the client on their left side (left lateral decubitus) positions the healthy left lung down and the diseased right lung up.
This "good lung down" strategy optimizes ventilation-perfusion (V/Q) matching, immediately improving oxygenation and reducing the risk of further physiological decompensation.

Anahtar Kavram

In clients with severe unilateral lung disease, positioning the client with the unaffected (good) lung in the dependent position maximizes ventilation-perfusion matching and improves oxygenation.
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Reduction of Risk Potential

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