Bun/creatinine ratio-based hydration for preventing stroke-in-evolution after acute ischemic stroke

Leng Chieh Lin, Jiann Der Lee, Yen Chu Hung, Chia Hao Chang, Jen Tsung Yang*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

25 Scopus citations


Background Blood urea nitrogen (BUN)/creatinine (Cr) ratio was recently reported to be an independent predictor of stroke-in-evolution (SIE) among patients who had suffered acute ischemic stroke. We aim to determine if providing hydration therapy to patients with a BUN/Cr ≥ 15 reduces the occurrence of SIE after acute ischemic stroke. Methods This prospective interventional study included 189 patients (hydration group, n = 92; control group, n = 97) with acute ischemic stroke and a BUN/Cr ≥ 15. Hydration group received intravenous bolus (300-500 mL) saline followed by a maintenance saline infusion (40-80 mL/h for the first 72 h), while control group received maintenance saline infusion (40-60 mL/h for the first 24 h and 0-60 mL/h for 24-72 h). The study endpoint was the proportion of patients who developed SIE within the first three days of emergency department admission. Results There were no significant differences in demographic or clinical characteristics between both groups. Patients in the hydration group received a significantly larger (all P < 0.001) median volume of infused saline than patients in the control group on Days 1 (2400 vs 1440 mL), 2 (1440 vs 0 mL), and 3 (1000 vs 0 mL). The proportion of patients who experienced SIE was significantly lower in the hydration group (9/92; 9.8%) compared with the control group (21/97; 21.6%) (Fig. 1, P = 0.026). Conclusions Our preliminary findings suggest that providing patients with acute ischemic stroke hydration therapy on the basis of their presenting BUN/Cr ratio may help reduce the occurrence of SIE and therefore improve prognosis.

Original languageEnglish
Pages (from-to)709-712
Number of pages4
JournalAmerican Journal of Emergency Medicine
Issue number7
StatePublished - 07 2014


Dive into the research topics of 'Bun/creatinine ratio-based hydration for preventing stroke-in-evolution after acute ischemic stroke'. Together they form a unique fingerprint.

Cite this