contractions


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contractions

Obstetrics Volleys of tightening and shortening of myometrium–uterine muscle, which occur during labor, cause dilatation and thinning of the cervix and aid in the descent of the infant in the birth canal. See Labor. Cf Decelerations.

contractions

A term usually applied to the periodic tightening and shortening of the muscle fibres in the womb (uterus) during labour which gradually bring about the expulsion of the baby. All muscles act by contraction.
References in periodicals archive ?
1) In the current study, contraction frequency monitoring has very poor sensitivity and a low positive predictive value (PPV) for spontaneous preterm delivery before 35 weeks' gestation.
We then examine a model that has been used to predict the level of force during repeated isometric contractions as a function of the number of the contraction.
This lightweight guide can be used time and time again to quickly and effortlessly locate the dot configuration of a symbol, rules commonly associated with a contraction, and determine if a contraction or shortform word can be used within a transcription.
For each individual, the force of all phasic contractions was averaged to assess its mean phasic closing force.
The means of amplitudes of contractions with varying doses of insulin when compared between group 2 and 3 were found to be statistically significant (Table-2).
Colonic contractions were recorded using the PowerLab system and Chart 5 software (AD instrument Ltd.
Accordingly, the purpose of the present study was to investigate the physiological responses to a static contraction in the standing position and the supine position.
unpublished data, 2011), who observed similar velocity-related spectral shifts in the vastus medialis (VM) and rectus femoris (RF) muscles, but are in opposition to results of Masuda et al (2001), who observed higher spectral frequencies under isometric contractions compared to that observed under isovelocity contractions between 600 and 2400 s-1; Aagaard et al (2000) and Croce et al (2000), who reported no significant relationship between velocity and SEMG-PSD; and, Gerdle et al (1988) and Cramer et al (2002), who reported spectral shifts based on the particular QF muscle investigated.
Prior to data collection, subjects were allowed to perform several warm-up contractions.
In conjunction with holding ice through the "contractions" played out on the Labor Simulator, the students and their partners are given the chance to experience a realistic labor simulation, with contractions that get longer, stronger and closer together as their practice labor progresses.
Contractions of the uterus are more frequent in IVF cycles compared to normal menstrual cycles, and a higher frequency of contractions around the time of embryo transfer is associated with a more negative impact on pregnancy outcomes," reported Dr.