This study will evaluate the use of a durometer to measure uterine tone in parturients undergoing cesarean delivery.
The most accurate and precise measure of uterine tone is unknown. The most commonly described in vivo method in the literature is a qualitative numeric scoring scale from 0-10. The 0-10 uterine tone score has demonstrated good and excellent inter-rater reliability between 1 and 2 raters respectively, and good inter-rater agreement. Recent data suggests that the 0-10 uterine tone score is well-correlated with clinical assessments of uterine tone. A handful of studies have used a quantitative "hardness meter", including a Shore durometer, to describe uterine tone in vivo, with promising results. The instrument has not yet been validated in cesarean delivery.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DEVICE_FEASIBILITY
Masking
NONE
Enrollment
20
The durometer will be held on the exterior of the lower uterine segment and fundus to measure the hardness reading at each location.
University of Chicago
Chicago, Illinois, United States
RECRUITINGfeasibility of a durometer
The primary outcome will be the ability to obtain reliable readings of the 'hardness' of the uterus during a cesarean delivery.
Time frame: within 10 minutes after placental delivery
durometer reading
average durometer reading at lower uterine segment and fundus
Time frame: 0 minutes after placental delivery
durometer reading
average durometer reading at lower uterine segment and fundus
Time frame: 3 minutes after placental delivery
durometer reading
average durometer reading at lower uterine segment and fundus
Time frame: 10 minutes after placental delivery
correlation of durometer reading with a 0-10 uterine tone rating score (0= "no tone"; 10= "excellent tone")
correlation of 2 measures
Time frame: 0 minutes after placental delivery
correlation of durometer reading with a 0-10 uterine tone rating score (0= "no tone"; 10= "excellent tone")
correlation of 2 measures
Time frame: 3 minutes after placental delivery
correlation of durometer reading with a 0-10 uterine tone rating score (0= "no tone"; 10= "excellent tone")
correlation of 2 measures
Time frame: 10 minutes after placental delivery
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