We don't have synonyms for ischemias yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are ischemia, ischaemias and ischaemia.
(n) :
(cardiology, pathology) Local disturbance in blood circulation due to mechanical obstruction of the blood supply (for example, embolism, thrombosis, or vasoconstriction).
(n) :
(cardiology, pathology) Local disturbance in blood circulation due to mechanical obstruction of the blood supply (for example, embolism, thrombosis, or vasoconstriction).