Hi Tosca, I'm sorry to hear about your father. Lungs are something that gets inflammed alot with lupus so that wouldn't surprise me. Hopefully it is just taking a little longer for the steroids to take effect. It usually takes about a week of iv steroids to turn the corner. I know it's frustratng to watch someone like that that you love but the ventilator really is helping him right now. Hopefully someone will come on that can give you some advice. We usually are faster at responding but the weekend after christmas has things a little slower than usual.
I'll be praying for your family
hang in there
carol