Sodium concentration and osmolality in the intravascular and interstitial spaces equilibrate across the vascular membrane.
钠离子浓度和血管内渗透压以及组织间隙渗透压通过血管膜保持平衡.
Most cases of hyponatremia are associated with low serum osmolality ( so - called hypo - osmolar hyponatremia ).
大多数低钠血症的病人血清渗透压降低 ( 所谓 的低渗性低钠血症 ).