last menstrual period


Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia.
Related to last menstrual period: menstrual cycle

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 ?
(7) Additional costs are incurred if the woman is beyond the legal limit for number of days since last menstrual period, and these costs tend to increase with gestational age.
(12) In France and Great Britain, some providers use ultrasound regularly, while others rely on it only when the products of conception are not expelled during the observation period or when there is a discrepancy between uterine size and the woman's reported date of her last menstrual period. (13) Great Britain's RCOG recommends that all providers have access to ultrasound, but believes that it is not essential to the medical abortion process.
Her last menstrual period was 1 week prior to the appointment.
The data showed that the PicoAMH Elisa test performed reasonably well at determining levels of AMH in the blood and identifying women who had their last menstrual period and women who were more than five years away from their last menstrual period.
Kharbanda, M.D., M.P.H., from HealthPartners Institute in Minneapolis, and colleagues compared risks for spontaneous abortion after 4vHPV in three exposure windows -- distal (16 to 22 weeks before the last menstrual period; 33 percent of participants), peripregnancy (within six weeks before the last menstrual period; 35 percent), and during pregnancy (last menstrual period through 19 weeks of gestation; 32 percent) -- among a cohort of 2,800 females 12 to 27 years of age with a pregnancy between 2008 and 2014.
(Some refer to this at "8 weeks gestation," measuring pregnancy from the date of the mother's last menstrual period, or "LMP," though fertilization or conception does not occur until two weeks later.) And while later abortions were common in the early days following Roe v.
'I am 50 and my last menstrual period was over a year ago,' she protested vehemently.
Thus, we can infer that in pregnant women whose last menstrual period was certain and whose clinical examination was consistent with LMP-based GA, the LMP-based GA is an acceptable method to be used for Down syndrome screening when ultrasonography is not available.
A 26-year-old primigravida at 39-week gestation by date of last menstrual period, presented to the Muhimbili National Referral Hospital, Tanzania, in active labor.
Gestational age has traditionally been determined from the date of the last menstrual period. This assumes that conception occurs on day 14 of the cycle.
The article uses the Bangladeshi government's definition of menstrual regulation (MR): "the procedure of regulating the menstrual cycle when menstruation is absent for a short duration." (1) MR is provided using manual vacuum aspiration up to 12 weeks from the last menstrual period if provided by a physician or a dual regimen of mifepristone and misoprostol up to nine weeks after a woman's last menstrual period.