preload


Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to preload: afterload

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,

n the tensile force in the neck of a tightened screw that locks the screw in place without exceeding the screw material's elastic limit.

preload

see cardiac preload.
References in periodicals archive ?
of Fonda, New York have partnered to offer Doctor Preload and Temper-Loc spindle nuts for quick preload, or "tight" bearing adjustments on a variety of steer, drive and trailer axles.
Key Words: fluid loading, cardiac, preload, haemodynamic response, critical illness
Spring stiffness seemed less important than the preload level.
The short-term settlement was more than what was predicted during the preloading process so we had to constantly change the timing of placing the preload, the size of the lifts, and the traffic patterns on site," Yang pointed out.
The tightening torque corresponds to a screw preload (clamp force), an important parameter that is a measure of the performance of the threaded joint.
Google currently faces a lawsuit for the reported "monopoly" of search in mobiles by having OEMs like HTC and Samsung making Google as default option and preload its apps suite on their devices.
The only thing that PC makers should do is to preload the package into their computer's hard drives, which will not activate the software programs," he said.
All of the company's controllers are said to feature fast-acting 32bit microprocessors for accurate and repeatable preload and test routines.
PiCCO-derived global end-diastolic volume index (GEDVI) and cardiac function index (CFI), were assessed as markers of left ventricular preload and myocardial contractility, respectively.
The standard system can store 20 mold, machine, and material choices, which Paulson will preload for each customer.
And, there is no need to preload any new software to get the new boards up and running.
A secondary benefit of the spring preload is its inherent ability to compensate for any wear that occurs over time.