In the course of research for an assignment I discovered that the most common sources of heparin come from porcine(pig) intestinal tracts. This normally wouldnt bother me, most of the medications I administer (or occasionally take myself) come from animal sources. However we use a modified version of heparin, enoxaparin as prophalaxis and treatment for blood clots in whats probably 70% of the patients in my hospital. Its very commonly used.
My problem is that I had no idea it was procine based, most of the staff I work with had no idea it was porcine based. I have certainly had jewish patients in the past. I must have at some point administered enoxaparin to them. Normally I give little consideration to religious elements of care, I appreciate they are important but I prioritise the body over the soul, I let the hospital chaplains worry about that. However this is a fairly heafty rule in the jewish belief structure we are unwittingly breaking.