preload

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preload

 [pre´lōd]
the volume of blood in the ventricle at the end of diastole.

pre·load

(prē'lōd),
1. The load to which a muscle is subjected before shortening.
2. Synonym(s): ventricular preload

preload

/pre·load/ (pre´lōd) the mechanical state of the heart at the end of diastole, the magnitude of the maximal (end-diastolic) ventricular volume or the end-diastolic pressure stretching the ventricles.

preload

[prē′lōd]
Etymology: L, prae + AS, lad
the stretch of ventricular muscle fibers at end diastole. It is reflected by the ventricular pressure and volume at that part of the cardiac cycle. Cardiac output increases with preload. Also called preload filling pressure.

preload

Cardiology The amount of hemodynamic pressure upstream from the heart, which is ↑ in heart failure due to mitral or aortic valve regurgitation. Cf Afterload.

pre·load

(prē'lōd)
1. The load to which a muscle is subjected before shortening.
2. Synonym(s): ventricular preload.

pre·load

(prē'lōd)
1. The load to which a muscle is subjected before shortening.
2. Synonym(s): ventricular preload.

preload

see cardiac preload.
References in periodicals archive ?
After that the machine is stopped and the preload is increased to 20 kN and then 30 kN force.
To illustrate the importance of the knowledge of preload in the fastening system, only bolt S1 was tightened with lesser preload (19,6 kN) as shown in Fig.
Further the measurement illustrates that the preload curve points towards a functional failure event - too low preload.
A preload of 25kN is generated in each of the bolt via a pretension section.
The roll adjusts on this calender were converted from a single motor for each roll to individual two speed brake motors at each end of each roll, and splice relief and preloads were added to the no.
As suggested above, improvement in operation can be obtained with the addition of preloads, where practical.
If preloads are to be added, the roll necks must be long enough to permit this.
If preloads or benders will be added, is there room to secure the necessary brackets to the frames?
During the tests, the displacement l(t) is measured by a clip-gauge, and the load force F(t) and the preload force [F.
During screw insertion, of interest are the torque variation and the preload force.
The preload force develops after about 700 ms, corresponding to the driving torque.
Figure 9 shows the characteristic values of the torque and preload force at stripping as a function of the pilot hole diameter (5 single tests).