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单词 diastole
释义

Definition of diastole in English:

diastole

noun dʌɪˈastəliˌdaɪˈæstli
mass nounPhysiology
  • The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

    Often contrasted with systole
    Example sentencesExamples
    • It relaxes slowly in early diastole and offers greater resistance to filling in late diastole, so that diastolic pressures are elevated.
    • The reflected wave returns to the aorta during systole rather than diastole, increasing systolic work even more and reducing diastolic pressure, on which coronary flow depends.
    • Systole is that part of the heart's pumping cycle when it contracts and pushes blood out, the pulse if you like, and diastole is when the heart relaxes and fills with blood ready for the next heartbeat.
    • Coronary blood flow occurs during diastole, and as the heart rate increases diastole shortens.
    • During diastole, blood fills the veins and moves cephalad with each heartbeat.

Derivatives

  • diastolic

  • adjective dʌɪəˈstɒlɪk
    Physiology
    • Relating to the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

      consistently high diastolic pressure could lead to organ damage
      Often contrasted with systolic
      Example sentencesExamples
      • Men who experienced the Leningrad siege have higher systolic and diastolic blood pressure and excess mortality from ischaemic heart disease and stroke.
      • Firstly, we analysed the diagnostic value of systolic and diastolic blood pressure and pulse rate with area under curves.
      • Systolic and diastolic blood pressures were within normal limits.

Origin

Late 16th century: via late Latin from Greek, 'separation, expansion', from diastellein, from dia 'apart' + stellein 'to place'.

 
 

Definition of diastole in US English:

diastole

nounˌdīˈastlēˌdaɪˈæstli
Physiology
  • The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.

    Often contrasted with systole
    Example sentencesExamples
    • Coronary blood flow occurs during diastole, and as the heart rate increases diastole shortens.
    • The reflected wave returns to the aorta during systole rather than diastole, increasing systolic work even more and reducing diastolic pressure, on which coronary flow depends.
    • It relaxes slowly in early diastole and offers greater resistance to filling in late diastole, so that diastolic pressures are elevated.
    • During diastole, blood fills the veins and moves cephalad with each heartbeat.
    • Systole is that part of the heart's pumping cycle when it contracts and pushes blood out, the pulse if you like, and diastole is when the heart relaxes and fills with blood ready for the next heartbeat.

Origin

Late 16th century: via late Latin from Greek, ‘separation, expansion’, from diastellein, from dia ‘apart’ + stellein ‘to place’.

 
 
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更新时间:2024/12/23 13:28:35