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词汇 vital capacity
释义

Definition of vital capacity in English:

vital capacity

noun
  • The greatest volume of air that can be expelled from the lungs after taking the deepest possible breath.

    肺活量

    Example sentencesExamples
    • Practising tiger boxing can improve the vital capacity in lungs, and build up the muscles, joints and tendon.
    • Assessment of cough effectiveness includes measurements of maximal inspiratory and expiratory pressures, peak cough expiratory flow, and either inspiratory or vital capacity.
    • Forced vital capacity or negative inspiratory force should be assessed every 2 to 4 hours until patients prove pulmonary stability.
    • The frequency of abnormal vital capacity increased, and the mean vital capacity decreased by 18% over the subsequent 10 years.
    • In one study, the mean vital capacity increased to 69% of the predicted preoperative value one year following transplantation.
    • As stated in the article, the effect size for the change in forced expiratory volume in one second was 57 ml; for the vital capacity it was 40 ml, but the change was in the opposite direction.
    • A forced vital capacity of less than 50% of the predicted value has been shown to be associated with a poor prognosis.
    • There is also a report of a 19 ml/yr decline in the vital capacity of non-white males and a 24 ml/yr decline in whites of European descent 25.
    • However, in a subset of patients with severe asthma with persistent eosinophilia, the forced vital capacity to slow vital capacity ratio is decreased, which is suggestive of airway collapse on forced expiration.
    • Forced vital capacity and forced expiratory volume in one second were measured at baseline, at the end of the dieting period, after the 14-week study, and at six and 12 months.
    • Expiratory reserve volume was determined after a slow vital capacity maneuver.
    • Lung volume, or changes in lung volume, are often expressed as a percentage of vital capacity.
    • If a valid measurement of vital capacity is needed for clinical decision-making, then the vital capacity should be measured slowly and separately from forced expiratory maneuvers.
    • Once the diagnosis is considered, measuring maximal inspiratory pressure, maximum voluntary ventilation, and supine and sitting vital capacities will confirm it.
    • Residual volume was calculated by subtracting the vital capacity from the total lung capacity, determined by the pressure-volume maneuver.
    • The authors conclude that the ratio of residual volume to total lung capacity is the major determinant of the increase in forced vital capacity achieved by lung volume reduction surgery.
    • The maximum volume attained represents the forced vital capacity, while the volume attained after one second represents the forced expiratory volume.
    • In more advanced cases of idiopathic pulmonary fibrosis with a vital capacity less than 50 percent, signs of secondary pulmonary hypertension may be present.
    • In addition to standard measures of lung function, forced vital capacity and forced expiratory volume in 1 sec ([FEV.sub.1.0] were also measured.
    • The functional residual capacity is decreased from the second trimester, while the vital capacity and [FEV.sub.1] are well-maintained throughout the pregnancy in healthy women.

Definition of vital capacity in US English:

vital capacity

noun
  • The greatest volume of air that can be expelled from the lungs after taking the deepest possible breath.

    肺活量

    Example sentencesExamples
    • The authors conclude that the ratio of residual volume to total lung capacity is the major determinant of the increase in forced vital capacity achieved by lung volume reduction surgery.
    • In more advanced cases of idiopathic pulmonary fibrosis with a vital capacity less than 50 percent, signs of secondary pulmonary hypertension may be present.
    • Forced vital capacity or negative inspiratory force should be assessed every 2 to 4 hours until patients prove pulmonary stability.
    • In addition to standard measures of lung function, forced vital capacity and forced expiratory volume in 1 sec ([FEV.sub.1.0] were also measured.
    • Forced vital capacity and forced expiratory volume in one second were measured at baseline, at the end of the dieting period, after the 14-week study, and at six and 12 months.
    • In one study, the mean vital capacity increased to 69% of the predicted preoperative value one year following transplantation.
    • Once the diagnosis is considered, measuring maximal inspiratory pressure, maximum voluntary ventilation, and supine and sitting vital capacities will confirm it.
    • Lung volume, or changes in lung volume, are often expressed as a percentage of vital capacity.
    • If a valid measurement of vital capacity is needed for clinical decision-making, then the vital capacity should be measured slowly and separately from forced expiratory maneuvers.
    • Residual volume was calculated by subtracting the vital capacity from the total lung capacity, determined by the pressure-volume maneuver.
    • However, in a subset of patients with severe asthma with persistent eosinophilia, the forced vital capacity to slow vital capacity ratio is decreased, which is suggestive of airway collapse on forced expiration.
    • The functional residual capacity is decreased from the second trimester, while the vital capacity and [FEV.sub.1] are well-maintained throughout the pregnancy in healthy women.
    • The frequency of abnormal vital capacity increased, and the mean vital capacity decreased by 18% over the subsequent 10 years.
    • There is also a report of a 19 ml/yr decline in the vital capacity of non-white males and a 24 ml/yr decline in whites of European descent 25.
    • Expiratory reserve volume was determined after a slow vital capacity maneuver.
    • Assessment of cough effectiveness includes measurements of maximal inspiratory and expiratory pressures, peak cough expiratory flow, and either inspiratory or vital capacity.
    • A forced vital capacity of less than 50% of the predicted value has been shown to be associated with a poor prognosis.
    • The maximum volume attained represents the forced vital capacity, while the volume attained after one second represents the forced expiratory volume.
    • As stated in the article, the effect size for the change in forced expiratory volume in one second was 57 ml; for the vital capacity it was 40 ml, but the change was in the opposite direction.
    • Practising tiger boxing can improve the vital capacity in lungs, and build up the muscles, joints and tendon.
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