The influence of dehydration on the prognosis of acute ischemic stroke for patients treated with tissue plasminogen activator BMC Cardiovasc Disord Fei-Fan Wu, Yen-Chu Hung, Y. H. Tsai, Jen-Tsung Yang, Tsong-Hai Lee, Chia-Wei Liow, Jiann-Der Lee, Chung-Jen Lin, Tsung-I Peng, and Leng-Chieh Lin*