Hi,
I' sorry you have had this experience and am mortified that noone took any time to explain things to you and Michael.
You said Linda was admitted with pneumonia. This is a bacterial infection and would have caused a septic reaction in Lindas body. This in itself can cause episodes of gross confusion and hallucinations. Couple this with the fact that the pneumonic process causes a reduction in the amount of oxygen Linda is able to absorb which also contributes to the confusion. This is a double banger - Sepsis causing confusion and low blood oxygen levels due to the pneumonia causing confusion/hallucinations.
I'm sure Linda will have been treated with Intavenous Antibiotics , so by now they should be on top of the infection . It will take time for the pneumonia to resolve and her oxygen levels to get back to normal, but I sincerely hope her confusion and agitation have improved.
I don't think the Heparin is to blame - a red herring.
Hope things are much better by now, take care,
Tammy

Caregiver/advocate to Husband Kris age 59@ diagnosis
DX Dec '10 SCC BOT T4aN2bM0 HPV+ve.Cisplatin x3 35 IMRT.
PET 6/11 clear.
R) level 2-4 neck dissection 8/1/11 to remove residual node - necrotic with NED
Feb '12 Ca back.. 3/8/12 total glossectomy/laryngectomy/bilat neck dissection/partial pharyngectomy etc. clear margins. All nodes negative for disease. PEG in.
March 2017 - 5 years disease free. Woohoo!