1/2 normal saline for hypovolemic hyponatremia

PA student here. I was recently on a critical care rotation where we were dealing with a pt who had a sodium of 108. To note, the patient was hypovolemic.

The nephrologist we consulted chose 1/2 normal saline for fluid resuscitation. When I inquired about this, his response was this is done to avoid overcorrection.

All of the literature I have read said HYPERtonic saline is first line treatment for severe hypovolemic hyponatremia. This is not the first time I've seen this done.

I would love to hear another specialists opinion on this.

Thanks.