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. Author manuscript; available in PMC: 2021 Feb 10.
Published in final edited form as: J Midwifery Womens Health. 2020 Jun 1;65(3):323–334. doi: 10.1111/jmwh.13119

Figure 3. Calculating the Fall-to-Rise Ratio.

Figure 3.

Fall-to-rise ratio is the time (in seconds) from the peak to the resolution of the contraction divided by the time (in seconds) from the onset to the peak of the contraction. Increased fall-to-rise ratio characterized by a prolonged recovery time following a contraction and is hypothesized to indicate uterine fatigue.