afterload

[af´ter-lōd] the tension developed by the heart during contraction; it is an important determinant of myocardial energy consumption, as it represents the resistance against which the ventricle must pump and indicates how much effort the ventricles must put forth to force blood into the systemic circulation. Factors that increase afterload include aortic and stenosis" >pulmonarystenosis, systemic and pulmonary hypertension, and high resistance" >peripheral resistance.

af·ter·load

(af'ter-lōd), 1. The arrangement of a muscle so that, in shortening, it lifts a weight from an adjustable support or otherwise does work against a constant opposing force to which it is not exposed at rest. 2. The load or force thus encountered in shortening.

Afterload

Cardiology The amount of haemodynamic pressure (peripheral vascular resistance) downstream from the heart, which increased in heart failure secondary to aortic stenosis and hypertension. Cf Preload.
Physiology The tension produced by heart muscle after contraction.

afterload

Cardiology The amount of hemodynamic pressure–peripheral vascular resistance downstream from the heart–which ↑ in heart failure 2º to aortic stenosis and HTN. Cf Preload Physiology The tension produced by heart muscle after contraction.

af·ter·load

, after-load (af'tĕr-lōd) 1. The arrangement of a muscle so that, in shortening, it creates a force from an adjustable support or otherwise work against an opposing force to which it is not exposed at rest. 2. The load or force thus encountered in shortening. 3. That resistance against which the left ventricle must eject its volume of blood during contraction.

单词	afterload
释义	afterload afterload [af´ter-lōd] the tension developed by the heart during contraction; it is an important determinant of myocardial energy consumption, as it represents the resistance against which the ventricle must pump and indicates how much effort the ventricles must put forth to force blood into the systemic circulation. Factors that increase afterload include aortic and stenosis" >pulmonarystenosis, systemic and pulmonary hypertension, and high resistance" >peripheral resistance. af·ter·load (af'ter-lōd), 1. The arrangement of a muscle so that, in shortening, it lifts a weight from an adjustable support or otherwise does work against a constant opposing force to which it is not exposed at rest. 2. The load or force thus encountered in shortening. Afterload Cardiology The amount of haemodynamic pressure (peripheral vascular resistance) downstream from the heart, which increased in heart failure secondary to aortic stenosis and hypertension. Cf Preload. Physiology The tension produced by heart muscle after contraction. afterload Cardiology The amount of hemodynamic pressure–peripheral vascular resistance downstream from the heart–which ↑ in heart failure 2º to aortic stenosis and HTN. Cf Preload Physiology The tension produced by heart muscle after contraction. af·ter·load , after-load (af'tĕr-lōd) 1. The arrangement of a muscle so that, in shortening, it creates a force from an adjustable support or otherwise work against an opposing force to which it is not exposed at rest. 2. The load or force thus encountered in shortening. 3. That resistance against which the left ventricle must eject its volume of blood during contraction.
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