Sheehan's syndrome is typically diagnosed by measuring the pituitary hormones levels - which usually fall depending on the severity of the ischemic necrosis.

席汉综合征经常通过测量垂体激素的水平来诊断；激素水平下降的程度，常取决于缺血性坏死的严重程度。

Coupled with the increased demand for blood by the lactotrophs, the pituitary cells no longer receive enough oxygen to survive - resulting in ischemic necrosis.

加上泌乳细胞对血液的需求增加，垂体细胞因而无法得到充足的氧以维持生存，从而导致缺血性坏死。