PROPHY VAP: Ceftriaxone to prevent early ventilator associated pneumonia The Bottom Line Why Does My THC Vape Cartridge Oil Turn Dark Brown Cloud Cover 29 Anesthesia Key Why Does Vape Juice Turn Brown and How to Avoid It Vape Green VAP = Ventilator Associated Pneumonia Think it in any ventilated patient with: Fever Purulent secretions New infiltrate on CXR Worsening oxygenation Prevention Head elevation my vape juice turns brown in tank