Gestational Age Calculator App [UPD] Download
Clemencia Branski
Weight gain is a largely inevitable and necessary aspect of pregnancy that varies between people. It affects many aspects of fetal development, such as the weight of the baby, the placenta, extra circulatory fluid, and its fat and protein stores. Weight management merits consideration because insufficient or excessive weight gain can have negative effects for both mother and fetus, including the need for cesarean section (C-section) and gestational hypertension. While the values vary between women, the Institute of Medicine recommends an overall pregnancy weight gain of 25-35 pounds for women who are considered "normal" weight (BMI 18.5-24.9), 28-40 pounds for those considered underweight (BMI < 18.5), 15-25 pounds for those considered overweight (BMI 25-29.9), and 11-20 pounds for those considered obese (BMI > 30).3 Our Pregnancy Weight Gain Calculator is based on the Institute of Medicine recommendations.
Try some of Flo's other online tools, including our due date calculator (for non-IVF pregnancies), hCG calculator, our pregnancy test calculator, and our period calculator.
The development of a portable electronic gestation calculator enables the obstetrician for the first time to recall all relevant data for his daily routine work from an electronic memory. This is useful not only for the calculation of the duration of pregnancies or the determination of delivery data, but also includes all relevant information from ultrasound biometry of the fetus. This paper presents the experience with this new electronic device, 'Babycomp', and comments on its design, technical features, functions and performance. The device has been thoroughly tested especially with respect to its suitability for practical purposes. Compared with the widely used disk for pregnancy calculations, the 'Babycomp' has a wide range of advantages for all users working in the field of obstetrics and reproductive medicine.
The Institute of Medicine recommendations for pregnancy weight gain only covers up until 40 weeks of pregnancy. You may continue tracking your weight gain on the calculator, but please consult your pregnancy carer for advice past your estimated due date.
Gaining too much weight during pregnancy can increase your risk of developing complications such as gestational diabetes, high blood pressure, having a bigger baby and complications during birth. It also means there is a greater chance of your baby becoming obese during childhood and adulthood. If you are concerned about your weight, talk to your GP, health professional or enrol in the Get Healthy in Pregnancy Program to receive advice from a health coach.
The calculator is based on the 2009 Institute of Medicine recommendations for weight gain in pregnancy. This is endorsed by the World Health Organisation and the National Health and Medical Research Council.
Only 5% of babies are born on their due date! Your first ultrasound gives the best indication of your due date. If your date changes, you can re-enter your expected due date in the calculator as many times as you like. This may change your healthy pregnancy weight gain range.
If you are under 18 it is recommended to see your GP or health professional about your healthy weight gain during pregnancy, and get regular dietary advice on what foods are best for you from a dietitian. The guidelines used in this calculator are targeted towards adults 18 and over. This is because your body composition and size is different to adults, and the adult measure of body mass (BMI) does not include under 18 year olds.
The calculator is shared for the research and educational purposes for which it was intended, and University of Wisconsin disclaims all liability associated with the use of the calculator. The information and results provided on this webpage are not intended to be nor should they be used as the sole basis for making health care decisions for any person. Physicians using this calculator in the care of their patients retain sole and ultimate responsibility for their own clinical decision-making and the treatment of their patients. Individuals using this calculator for their own individual use are advised that the use of this calculator is not a substitute for medical advice from a trained health care professional and that they should consult with their personal health care provider about any questions about their health. Use of this calculator or any other information on this page does not create a patient provider relationship between any individual and any University of Wisconsin School of Medicine and Public Health physician or other health care provider.
Cobo and colleagues is the largest data set of published outcomes from frozen/warmed oocytes. This study simply reported on the live birth rate per warmed egg in women of each age group. We entered these estimates into a binomial calculator to arrive at the chances of having 1 or multiple live births based on the number of eggs used in each age group.
Classification of growth for a particular gestational age is a critical part of fetal and infant care. References used at different centers are not always comparable, some are many years old and few have used rounding off to the nearest completed week of gestation as recommended by WHO. The Canadian Perinatal Surveillance System (CPSS) has developed this new population-based Canadian reference for birth weight for gestational age, which included data on all singleton infants born in Canada (with the exception of the province of Ontario) between 1994 and 1996 at 22 to 43 weeks gestation, comprising 347,570 males and 329,035 female infants. This reference was created during a period of increased availability of ultrasound confirmation of gestational age, and it is gender-specific.
Researchers at Kaiser Permanente Northern California developed a multivariate predictive model to estimate the risk of EOS in infants 35 weeks and older in terms of gestational age. The neonatal EOS calculator is a tool for instructed clinicians to guide standardized management of EOS, currently endorsed as a possible strategy by the American Academy of Pediatrics, a viable alternative to categorical risk evaluation approach or serial physical examinations of infants (SPEs).2
The EOS calculator is an accurate multivariate predictive model of risk to establish prior probability for newborn sepsis, based on objective data at birth, which could be combined with a neonatal physical examination to rate posterior probability for clinical management (observation, blood tests and empirical treating). Key risk factors that determine prior EOS probability are gestational age, highest maternal antepartum temperature, GBS carriage status, duration of ROM and type and timing of intrapartum antibiotics.7
We instructed clinicians and nurses with interactive meetings to screen all newborns with the EOS calculator to become confident with this new tool. Instructed nurses calculated online the estimated risk of EOS at birth and reported the result of the assessment in the local electronic medical record. The web platform is structured for identifying and ranking all factors critical to the decision, so the nurses themselves were able to recognize EOS risk factors and different clinical presentations (well-, equivocal- and clinically ill-appearing newborn). In case of a well-appearing newborn with maternal EOS risk factors, the nurse has been instructed to use the calculator at birth and alert the neonatologist in case of need to monitor vital parameters or taking blood tests or an increased risk for EOS. The neonatologist verified the EOS risk evaluation and clinical management chosen at birth or during the first clinical examination. In addition, she/he verified EOS calculator accuracy and compliance.
Data from neonatal medical records included sex, gestational age, birth weight, Apgar score, a need for close monitoring of vital signs and sepsis screening, results of blood and CSF cultures, CBC count and the C-reactive Protein (CRP), plus antibiotic treatment.
Clinical Outcomes by Study Period. This figure shows the trajectories of these reductions starting immediately after the introduction of the new management strategy and continued in the EOS calculator period.
In the present study, its application was associated with a reduction in antibiotic therapy by more than 50%, with relevant consequences for the emergence of antibiotic resistance and adverse effects. We also found a statistical and clinically significant reduction in blood tests from 30.6% to 15.4% and close monitoring of vital parameters from 25.4% to 4.8%, and NICU admissions from 6.2% to 4.5%. These aspects also coincided with a reduction in nursing overload. The large drop in close clinical monitoring could be explained by two key components of the EOS calculator: a better risk stratification and a targeted monitoring in EOS-risk infants.
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