diastolic
adjective medical specialized uk/daɪ.əˈstɒl.ɪk/ us/ˌdaɪ.əˈstɑː.lɪk/
（心脏的）舒张期的，心舒期的
relating to the diastole (= the period when the main chamber of the heart is relaxed and filling with blood)
diastolic blood pressure 心舒期血压