Heparin-induced thrombocytopenia (HIT) occurs in up to 1% of patients receiving unfractionated heparin. HIT may occur even when very-low-dose heparin (eg, used in flushes to keep IV or arterial lines open) is used. The mechanism is usually immunologic.
The hair loss can seem more extreme if your hair grew much more than normal during pregnancy, or if you have long hair. Most women will return to their usual hair growth cycle within six months, or between 6 and 12 months after birth.
If the hair loss doesn't seem to be slowing and you're still losing lots of hair six or so months after delivery, check in with a dermatologist or your healthcare provider. It may be a sign that you're low on iron, which is not entirely uncommon for new moms.