Do nutrition support and nutritional status play a role in enabling a patient to be weaned from a respiratory ventilator? Explain
What will be an ideal response?
• Because nutrient metabolism involves both inspiration of oxygen and expiration of carbon dioxide, and mechanical ventilation is affected by each of these, certainly nutrition support plays a role.
• Most importantly, overfeeding, and thus an increase of carbon dioxide production, may increase dependency on mechanical ventilation if underlying respiratory status is impaired.
• Additionally, malnutrition affects all muscles and ability to perform work.
• This weakens respiratory muscles, which further alters ability to ventilate normally.
• Malnutrition may also impair immune function, which increases risk of infection and other complications.
• Since mechanical ventilation impairs one's ability to engage in oral food intake, nutrition support is required to prevent malnutrition/further clinical complications.
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