This pilot study aimed to collect high-quality randomized and prospective information to help plan a future, larger multicenter trial. The study will compare the two hypertonic solutions currently used for subarachnoid hemorrhage (SAH) - related complications and to determine if the reduction of chloride load by using a sodium acetate and sodium chloride mixture can lead to a relative reduction of serum chloride, reduce kidney injury, and as efficacious as the classic hypertonic solution.