Should I get an early pregnancy scan?

ABSTRACT Rapid and accurate determination of gestational age GA may be vital to the appropriate care of the critically ill pregnant patient and improve obstetric care through allowing the optimal timing of necessary interventions and the avoidance of unnecessary ones. Ultrasound scans are considered to be the most cost-effective, accurate and safe methods for measurement of various fetal parts in pregnant women. The aim of this research is to explore the accuracy of ultrasound in determining gestational age of fetus in third trimesters. Only women with single live fetus were included in this study. Women who participated in the study were selected on following criteria: Regular menstrual cycles, known date of last menstrual period and previous live normal neonates in multipara.

10 weeks pregnant – all you need to know

DIY alternatives to induction If you are desperate to see your baby, or are finding it hard to decline offers of hospital induction, then you may be considering ways to bring on labour yourself. There are plenty of links and suggestions on the UK Midwifery archives page on complementary therapies. It might be worth thinking through exactly you do not want induction in hospital. If you would not accept medical treatment to bring on labour, what is different about using complementary therapies?

If ultrasound dating before 14 0/7 weeks of gestation differs by more than 7 days from LMP dating, the EDD should be changed to correspond with the ultrasound dating. Dating changes for smaller discrepancies are appropriate based on how early in the first trimester the ultrasound examination was performed and clinical assessment of the reliability of the LMP date (Table 1).

Signs of meconium staining e. Prolonged pregnancy babies are typically born with less vernix and drier skin. However, poorly compliant patients may still present with prolonged pregnancy due to errors in dating. This is most reliable as the fetus rarely shows signs of being constitutionally large or small until a later stage of gestation. Ultrasound scanning to check growth, liquor volume and dopplers are frequently performed in women with prolonged pregnancy.

However, evidence suggests that ultrasound has poor prognostic value in determining placental function and predicting fetal distress. This can be achieved by: See here for more information. Women who decline induction of labour should be offered twice weekly CTG monitoring and USS with amniotic fluid measurement in an attempt to identify fetal distress. In the event of fetal distress, or other serious complication to mother or child, it may be necessary to conduct an emergency caesarean section.

Summary At term there is an exponential rise in the number of stillbirths. First trimester USS dating has helped to reduce errors in calculating due dates and allows clinicians and patients to plan for delivery if it does not occur spontaneously before 42 weeks.

Your pregnancy and baby guide

Balancing pregnancy with motherhood How do you cope? If your first pregnancy and labour were straightforward, you may be feeling more relaxed about having another baby. But pregnancy itself could present new challenges, especially if your first child is young.

For most mums-to-be, the first scan will be a dating scan at between 10 weeks and 13 weeks plus six days of pregnancy (NICE ). However, the timing of your first scan will also depend on how your pregnancy is going, and where you live.

Your midwife should explain to you exactly what is being tested for and why. What scans and screening tests can I expect, and when? It’s recommended that you have a dating scan at between 10 weeks and 13 weeks plus six days. You’ll be offered another scan at between 18 weeks and 20 weeks to check that your baby is developing properly.

You should be offered the combined test at between 11 weeks and 13 weeks plus six days to screen for genetic problems and other abnormalities NCCWCH The combined test involves a nuchal translucency scan combined with blood tests. It may be that you book too late in pregnancy for the combined test, or that first trimester tests aren’t available in your area. Find out more about scans and screening tests.

Pregnancy ultrasound scans: an overview

Doppler Ultrasound The doppler shift principle has been used for a long time in fetal heart rate detectors. Further developments in doppler ultrasound technology in recent years have enabled a great expansion in its application in Obstetrics, particularly in the area of assessing and monitoring the well-being of the fetus, its progression in the face of intrauterine growth restriction, and the diagnosis of cardiac malformations. Doppler ultrasound is presently most widely employed in the detection of fetal cardiac pulsations and pulsations in the various fetal blood vessels.

The “Doptone” fetal pulse detector is a commonly used handheld device to detect fetal heartbeat using the same doppler principle.

Otherwise a scan is generally booked at about 7 weeks to confirm pregnancy, exclude ectopic or molar pregnancies, confirm cardiac pulsation and measure the crown-rump length for dating. A second scan is performed at 18 to 20 weeks mainly to look for congenital malformations, when the fetus is large enough for an accurate survey of the fetal anatomy.

International conference on transition and cord clamping at birth April It is increasingly recognised that the circulatory changes involved in transition at birth cannot occur within a few seconds of birth. While the healthy fetal circulation and the healthy neonatal circulation are moderately well understood, the underlying triggers, the precise sequence and speed of the changes in the circulation are not. How can we interefere in something we do not understand? Nearly all textbooks and journals which include the physiological transition of the neonate at birth describe a marked change in the peripheral vascular resistance and an increase in the afterload of the heart.

One notable exception is Gray’s Anatomy. Gray’s Anatomy describes inflation of the neonatal lungs as the first change after birth and does not describe any changes in the afterload of the heart. Afterload is the force that the myocardium generates during ejection against systemic and pulmonary vascular resistances.

Dating scans

Contraceptive use[ edit ] Combined oral contraceptive pills are a type of oral medication that is designed to be taken every day, at the same time of day, in order to prevent pregnancy. For the first 21 days of the cycle, users take a daily pill that contains hormones estrogen and progestogen. The last 7 days of the cycle are hormone free days. Some packets only contain 21 pills and users are then advised to take no pills for the following week. Other packets contain 7 additional placebo pills, or biologically inactive pills.

Some newer formulations have 24 days of active hormone pills, followed by 4 days of placebo examples include Yaz 28 and Loestrin 24 Fe or even 84 days of active hormone pills, followed by 7 days of placebo pills Seasonale.

Guidelines for Diagnostic Imaging During Pregnancy and Lactation. ABSTRACT: Imaging studies are important adjuncts in the diagnostic evaluation of acute and chronic conditions. However, confusion about the safety of these modalities for pregnant and lactating women and their infants often results in unnecessary avoidance of useful diagnostic tests or the unnecessary interruption of breastfeeding.

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Guidelines

According to midwife Ann Richley, your GP or midwife might suggest an early pregnancy scan if you’ve: How early can I have an early pregnancy scan? A pregnancy ultrasound scan will be carried out from around 6 weeks. So I would say leave it until 8 weeks so you know for sure.

The other where I see the obstetrician says the date is based on the dating scan which is over a week later. Does anyone know where I can find the NICE guidelines for dating IVF pregnancies? I have googled and googled to no avail!

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Miscarriage information and support

Dating and viability What is a dating scan? A dating scan is an ultrasound examination which is performed in order to establish the gestational age of the pregnancy. Dating scans also reveal other important information such as:

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Women who are pregnant, their families and carers Is this guideline up to date? Your responsibility The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian.

Local commissioners and providers of healthcare have a responsibility to enable the guideline to be applied when individual professionals and people using services wish to use it. They should do so in the context of local and national priorities for funding and developing services, and in light of their duties to have due regard to the need to eliminate unlawful discrimination, to advance equality of opportunity and to reduce health inequalities.

Nothing in this guideline should be interpreted in a way that would be inconsistent with complying with those duties.

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Your first scan is more likely to be a dating scan when you’re between about 10 weeks and 14 weeks pregnant. This will confirm your due date and check whether you are having twins (NICE ). The dating scan is especially important if you’re having screening tests for Down’s syndrome.

You may like to take a look at charts for crown-rump length , biparietal diameter , femur length , abdominal circumference , gestational sac diameter , yolk sac diameter and intrauterine fetal weight. If you have problems understanding and calculating your due date, check out and download a copy of the Ob calculator by York Winston.

Hutchon’s site and the Gestation Network also provide pregnancy calculators. A large number of mails I received are about fetal anomalies, I have therefore tried to put together a Catalogue of Web pages which describe in some detail specific congenital anomalies that are diagnosable by ultrasound. You can visit the page here. I am pregnant for 7 weeks. I went for a scan yesterday and was told I should have a full bladder.

13 WEEKS PREGNANT – DATING SCAN, SCAN PHOTOS, DUE DATE & BUMP SHOT