A client receiving mechanical ventilation has a pH of 7.26, PaCO2 of 68 mm Hg, and a PaO2 of 92 mm Hg. Which intervention should the nurse implement?Reference Range:
Arterial Blood Gas (ABG)
pH [Adult/child: 7.35 to 7.45]
PaCO2 [Adult/child: 35 to 45 mm Hg)
HCO- [Adult/child: 21 to 28 mEq/L (21 to 28 mmol/L)] PaO2 [Adult/child: 80 to 100 mm Hg)
Increase rate of ventilation.
Decrease expiratory flow time.
Increase ventilator tidal volume.
Decrease expiratory pressure.
The Correct Answer is A
Rationale
A. The client's pH is low (acidotic), and the PaCO2 is high (respiratory acidosis). Increasing the rate of ventilation (respiratory rate) can help to decrease PaCO2 by increasing alveolar ventilation, thereby helping to correct respiratory acidosis.
B. Expiratory flow time affects the time available for exhalation. While this may affect the overall mechanics of ventilation, it is not directly targeting the primary issue of elevated PaCO2 and acidosis.
C. Increasing tidal volume increases the volume of air delivered with each breath. This can improve ventilation efficiency but may not address the underlying problem of elevated PaCO2 unless it leads to increased minute ventilation.
D. Expiratory pressure is related to positive end-expiratory pressure (PEEP), which helps maintain alveolar recruitment and improve oxygenation. Decreasing expiratory pressure may not directly address the elevated PaCO2 and acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale
A. Diarrhea and flatulence are common gastrointestinal side effects of statin medications like lovastatin. While uncomfortable for the client, these symptoms are typically not serious and do not require immediate follow-up unless severe or persistent.
B. Muscle pain, also known as myalgia, is a potential side effect of statin therapy. In some cases, statins can cause muscle inflammation (myositis) or more severe muscle breakdown (rhabdomyolysis), which can lead to serious complications such as kidney damage. If a client reports new or worsening muscle pain, especially if accompanied by weakness, tenderness, or dark urine, it requires immediate follow-up to assess for these potential complications.
C. Abdominal cramps can occur as a gastrointestinal side effect of statins but are generally not considered a serious adverse reaction. They may improve with time or adjustments in diet or medication administration timing.
D. Altered taste, such as a metallic taste, is a less common side effect of statin therapy. While it can be bothersome, it is usually not serious and does not typically require immediate follow-up unless severe or persistent.
Correct Answer is A
Explanation
Rationale
A. Children with eczema often scratch their itchy skin, which can lead to skin breakdown, bleeding, and secondary infections. Short nails minimize the trauma inflicted on the skin during scratching and help prevent complications.
B. Bathing helps to hydrate the skin and remove allergens, bacteria, and other irritants that can exacerbate eczema. Bathing daily with bath oil helps to moisturize the skin and prevent dryness. Bath oils or emollients should be used instead of harsh soaps, which can strip the skin of natural oils and worsen dryness. However, it's essential to ensure the water is not too hot and to limit bath time to avoid drying out the skin.
C. Moisturizing the skin is a cornerstone of eczema management. Applying a moisturizer, such as baby lotion or emollient cream, helps to hydrate the skin, reduce dryness, and protect the skin barrier. Moisturizers should ideally be applied at least twice daily, especially after bathing or showering when the skin is damp to lock in moisture. Choosing a moisturizer that is fragrance-free and hypoallergenic is beneficial to avoid further irritation.
D. Cotton clothing is recommended for children with eczema because it is breathable and less likely to irritate sensitive skin compared to synthetic fabrics. Cotton allows better air circulation around the skin, which can help prevent overheating and sweating, both of which can exacerbate eczema symptoms. Avoiding wool and synthetic fabrics that can cause friction and irritation is important.
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