I need to have an L4-S1 ALIF with cages and a posterior screw fixation in July. I am so freaked out about the pain but also have questions. My Dr told me I will be in intensive care for 1 night. Have others had to be in intensive care? Will I be on a respirator during and after surgery that first day and night? Anyone out there have this? Now time of truth.... how bad is the pain, really? Is it unbearably bad or tolerable with pain meds. I would rather know before going in than have negative surprises. thanks for all your help with these questions.