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Presence of late decelerations with fewer than 50% of contractions or significant variable decelerations. Requires repeat testing on following day. [1] Equivocal—Tachysystole: Presence of contractions that occur more frequently than every 2 minutes or last longer than 90 seconds in the presence of late decelerations.
Umbilical cord prolapse should always be considered a possibility when there is a sudden decrease in fetal heart rate or variable decelerations, particularly after the rupture of membranes. With overt prolapses, the diagnosis can be confirmed if the cord can be felt on vaginal examination.
When variable decelerations are associated with uterine contractions, their onset, depth, and duration commonly vary with successive uterine contractions. [citation needed] Prolonged deceleration: a decrease in FHR from baseline of at least 15 bpm, lasting at least 2 minutes but less than 10 minutes. A deceleration of at least 10 minutes is a ...
Nuchal cord, when the umbilical cord is (tightly) around the neck of the fetus [2]; Entanglement of the cord [2]; Knot in the cord [2]; Cord prolapse, where the umbilical cord exits the birth canal before the baby, which can cause cord compression.
When vehicles collide, the damage increases with the relative velocity of the vehicles, the damage increasing as the square of the velocity since it is the impact kinetic energy (1/2 mv 2) which is the variable of importance. Much design effort is made to improve the impact resistance of cars so as to minimize user injury.
If the speed of the vehicle decreases, this is an acceleration in the opposite direction of the velocity vector (mathematically a negative, if the movement is unidimensional and the velocity is positive), sometimes called deceleration [4] [5] or retardation, and passengers experience the reaction to deceleration as an inertial force pushing ...
Lower average benchmark rates should also contribute to lower funding costs as our CD maturities reprice, although this will be influenced by competitive deposit beta trends in response to any ...
SDANN (standard deviation of the average NN intervals) calculated over short periods, usually 5 minutes. SDANN is therefore a measure of changes in heart rate due to cycles longer than 5 minutes. RMSSD (root mean square of successive differences), the square root of the mean of the squares of the successive differences between adjacent NNs. [45]