Maternal complications include hypovolemic shock, Sheehan syndrome which is a type of perinatal pituitary necrosis that results from hypovolemia, as well as renal failure.

母亲可能发生的并发症包括低血容量性休克以及席汉综合征，一种由低血容量和肾功能衰竭引发的围产期垂体坏死。

So, in the case of hypovolemia and hypotension, the macula densa cells sense the low sodium and chloride levels and send a signal over to the juxtaglomerular cells which are located in the wall of the afferent arteriole.

因此，当血容量减少、低血压时，致密斑感受到钠、氯含量降低，传递信号给位于入球小动脉血管壁上的球旁细胞。