last menstrual period


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last menstrual period

Gynecology The most recent time that a ♀ notes menstruation, a datum recorded in a chart during a routine gynecologic visit. See Menstruation.

last menstrual period

Abbreviation: LMP
The date of the first day of menstruation before a presenting illness or the advent of pregnancy-related amenorrhea. The date is used in estimating the expected date of delivery.
See: Naegeli rule
See also: period
References in periodicals archive ?
In an analysis that adjusted for women's socioeconomic and chronic disease stares, pill use within 30 days of the last menstrual period was positively associated with the occurrence of very low and low birth weight (odds ratios, 3.
Taking injectable contraceptives correlates strongly with an inability to recall the date of the last menstrual period with certainty (p=0.
Surgical (vacuum aspiration): Can be performed from between seven and 14 weeks after the beginning of the last menstrual period.
Two sets of medians were computed based on gestational age derived from either last menstrual period or biparietal diameter ultrasound measurements: ultrasound median ITA = [10.
1] Research from the past decade suggests that clinical markers, such as last menstrual period and symphysis-fundal height, when consistently monitored and applied, can be as accurate as fetal ultrasound in predicting gestational age.
The duration of pregnancy is 40 weeks (280) days calculated from the Last Menstrual Period (LMP), according to Naegele's rule.
Moreover, the Fact Checker said, "The [Hart] poll did not specify that it was asking about terminating a pregnancy 22 weeks after a woman's last menstrual period [equivalent to the 20 weeks post-fertilization age cutoff in the bill]--the dating method that Planned Parenthood and other opponents of the bill use and accept.
Because high levels of morbidity are associated with both procedures, Anadil Alam and colleagues explored the acceptability and feasibility of using a mifepristone-misoprostol regimen for uterine evacuation among women who were no more than 63 days past their last menstrual period [page 79].
Of note, the prevalence of hepatic steatosis rose with greater time since the last menstrual period (LMP).