Acute Respiratory Distress Syndrome (ARDS) Supportive Care Protocol
Primary Stack
Core supplements with strongest evidenceAnti-inflammatory lipids that may reduce lung inflammation and improve oxygenation in ARDS
High-dose IV vitamin C may reduce inflammation and oxidative stress in critical illness
Supporting Stack
Additional supplements for enhanced resultsDeficiency common in critically ill and associated with worse ARDS outcomes
Supporting Studies (1)
Antioxidant trace element; levels depleted in critical illness
Essential for immune function and wound healing; often deficient in critical illness
Supporting Studies (1)
Glutathione precursor with antioxidant effects; studied for ARDS
Supporting Studies (1)
Fat-soluble antioxidant that may protect lung tissue from oxidative damage
Supporting Studies (1)
May support gut barrier and immune function in critical illness
Supporting Studies (1)
How This Protocol Works
Simple Explanation
Acute Respiratory Distress Syndrome (ARDS) is a severe, life-threatening lung condition where the lungs become severely inflamed and filled with fluid, making it extremely difficult to breathe. It typically occurs as a complication of other serious conditions like severe pneumonia, sepsis, trauma, or aspiration. ARDS requires intensive care unit (ICU) treatment with mechanical ventilation and specialized supportive care. While there is no specific cure, certain nutritional interventions may support recovery.
CRITICAL: ARDS IS A MEDICAL EMERGENCY requiring ICU care and mechanical ventilation. The supplements listed here are administered in hospital settings as part of critical care protocols - they are NOT home treatments. Treatment focuses on treating the underlying cause, lung-protective ventilation, prone positioning, and supportive care. If you or someone experiences sudden severe breathing difficulty, call emergency services immediately.
* Omega-3 Fatty Acids (EPA/DHA) have anti-inflammatory effects that may help reduce lung inflammation in ARDS. Enteral nutrition formulas enriched with omega-3s have been studied and may improve oxygenation and reduce time on ventilator.
* Vitamin C (IV high-dose) has been studied in critical illness including ARDS and sepsis. High-dose IV vitamin C has antioxidant and anti-inflammatory effects that may help reduce organ damage.
* Vitamin D deficiency is very common in critically ill patients and associated with worse outcomes. High-dose supplementation to correct deficiency may support immune function and recovery.
* Selenium is an antioxidant trace element that becomes depleted in critical illness. Supplementation may support antioxidant defenses.
* Zinc supports immune function and is often deficient in critically ill patients.
* NAC (N-Acetylcysteine) provides the building block for glutathione, the body's major antioxidant. It has been studied for ARDS with mixed results.
* Vitamin E is a fat-soluble antioxidant that may help protect lung tissue from oxidative damage.
* Glutamine supports gut barrier function and immune cells, which may help in critical illness recovery.
Expected timeline: ARDS is a serious condition with high mortality. Recovery takes weeks to months in survivors. These nutritional interventions are provided during ICU stay as part of comprehensive critical care. Long-term lung function may be affected even after recovery.
Clinical Perspective
Acute Respiratory Distress Syndrome (ARDS): severe inflammatory lung injury characterized by bilateral pulmonary infiltrates, severe hypoxemia (PaO2/FiO2 <300), and non-cardiogenic pulmonary edema. Berlin definition: mild (200-300), moderate (100-200), severe (<100) based on P/F ratio. Causes: pneumonia (most common), sepsis, aspiration, trauma, pancreatitis, transfusion, inhalation injury. Mortality: 30-40% overall.
CRITICAL: ARDS requires ICU management. Primary treatment: lung-protective ventilation (low tidal volume 6ml/kg IBW, plateau pressure <30 cmH2O), prone positioning for severe ARDS, conservative fluid management, treatment of underlying cause. Neuromuscular blockade for severe ARDS. ECMO for refractory cases. Corticosteroids (dexamethasone) for moderate-severe ARDS. Nutritional support is ADJUNCTIVE - focus on lung-protective ventilation first.
* Omega-3 Fatty Acids (B-grade): EPA and DHA modulate inflammation (prostaglandins, leukotrienes). Meta-analysis: omega-3 enriched enteral nutrition may improve oxygenation and reduce ventilator days (PMID: 25230885). Systematic review: potential benefit (PMID: 21606173). Provided via omega-3 enriched enteral formula (e.g., Oxepa). OMEGA trial was negative - interpretation debated.
* Vitamin C (IV) (B-grade): Antioxidant, reduces NF-kB, supports endothelial function. Meta-analysis: may reduce mortality and ICU stay in critically ill (PMID: 31832643). Review: potential in sepsis and ARDS (PMID: 28817205). 1.5-6g IV daily in divided doses. CITRIS-ALI trial: improved organ failure scores. VITAMINS trial: negative for mortality.
* Vitamin D (B-grade): Immunomodulatory; deficiency prevalence 40-70% in ICU patients. Systematic review: supplementation may improve outcomes in deficient patients (PMID: 28202703). High-dose loading (300,000-500,000 IU) then daily supplementation.
* Selenium (C-grade): Component of glutathione peroxidase. Meta-analysis: may reduce mortality in critical illness but evidence inconsistent (PMID: 26316007). 200-500mcg daily IV or enteral.
* Zinc (C-grade): Immune function, wound healing. Systematic review: deficiency common in critically ill; supplementation may benefit (PMID: 25525410). 25-50mg daily.
* NAC (C-grade): Glutathione precursor; reduces oxidative stress. Meta-analysis: may improve oxygenation but inconsistent mortality benefit (PMID: 25006545). 40-150mg/kg/day IV.
* Vitamin E (C-grade): Membrane antioxidant. Review: part of antioxidant approach in ALI/ARDS (PMID: 17284728). 400-800 IU daily enteral.
* Glutamine (C-grade): Gut barrier, immune function. Meta-analysis: benefit uncertain; REDOXS trial raised concerns about harm in multi-organ failure (PMID: 25880640). 0.3-0.5g/kg/day if used. Caution in renal failure.
Biomarker targets: PaO2/FiO2 ratio (oxygenation), ventilator-free days, ICU length of stay, mortality, SOFA scores, inflammatory markers (CRP, procalcitonin), vitamin D level.
Protocol notes: Lung-protective ventilation is foundation - reduces mortality. Prone positioning for moderate-severe ARDS (PaO2/FiO2 <150) for 12-16 hours/day. Conservative fluid management after initial resuscitation. Early mobility when stable. VTE prophylaxis. Stress ulcer prophylaxis. Treat underlying cause (antibiotics for pneumonia, source control for sepsis). Neuromuscular blockade for severe ARDS first 48h if needed for ventilator synchrony. ECMO for refractory hypoxemia in appropriate candidates. Corticosteroids (dexamethasone) for persistent moderate-severe ARDS. Nutrition: enteral preferred; start early. Protein: 1.2-2.0g/kg/day. Caloric goals: 20-25 kcal/kg/day (avoid overfeeding). Refractory shock contraindication to full feeding. Monitor for refeeding syndrome. Recovery: pulmonary function may be impaired long-term; physical rehab important. Psychological support - PTSD common. Long COVID/post-COVID ARDS has specific considerations.