This is the 12311th most frequent Russian word.
ишемическая
"Iшемическая" translates to "ischemic" in English, relating to a restriction in blood supply to tissues.
Here, 'ишемическая' is an adjective describing 'болезнь сердца' (heart disease), specifying the type as ischemic.
Ишемическая болезнь сердца — это распространённое заболевание.
Ischemic heart disease is a common illness.
In this case, 'ишемическая' qualifies 'нейропатия' (neuropathy), indicating the condition relates to restricted blood flow.
Пациент страдает ишемической нейропатией, что требует особенного лечения.
The patient suffers from ischemic neuropathy, which requires special treatment.
Here, 'ишемическая' is used to describe 'атака' (attack), indicating the type of attack associated with ischemia.