noun
diastole
Medical term for the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.
拡張期血圧が高い場合は、動脈硬化が疑われる。
If diastolic blood pressure is high, arteriosclerosis is suspected.
Compound of 拡張 (expansion) + 期 (period), referring to the expansion phase of the heart.