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USG/ULTRASOUND OBSTETRICS /ANOMALY SCAN

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First-Trimester Ultrasound Examination


Indications

  • Confirmation of the presence of an intrauterine pregnancy
  • Evaluation of a suspected ectopic pregnancy
  • Defining the cause of vaginal bleeding
  • Evaluation of pelvic pain
  • Estimation of gestational (menstrual) age
  • Diagnosis or evaluation of multiple gestations
  • Confirmation of cardiac activity
  • Imaging as an adjunct to chorionic villus sampling, embryo transfer, and localization and removal of an intrauterine device
  • Assessing for certain foetal anomalies, such as anencephaly, in high-risk patients
  • Evaluation of maternal pelvic masses and/or uterine abnormalities
  • Measuring the nuchal translucency (NT) when part of a screening program for foetal aneuploidy
  • Evaluation of a suspected hydatidiform mole

Second- and Third-Trimester Ultrasound Examination


Indications

  • Screening for foetal anomalies
  • Evaluation of foetal anatomy
  • Estimation of gestational (menstrual) age
  • Evaluation of foetal growth
  • Evaluation of vaginal bleeding
  • Evaluation of abdominal or pelvic pain
  • Evaluation of cervical insufficiency
  • Determination of foetal presentation
  • Evaluation of suspected multiple gestation
  • Adjunct to amniocentesis or other procedure
  • Evaluation of a significant discrepancy between uterine size and clinical dates
  • Suspected ectopic pregnancy
  • Evaluation of foetal well-being
  • Suspected amniotic fluid abnormalities

TECHNOLOGY USED IN USG OBSTETRICS


Ultrasound is a type of imaging. It uses high-frequency sound waves to look at organs and structures inside the body. Health care professionals use it to view the heart, blood vessels, kidneys, liver, and other organs. During pregnancy, doctors use ultrasound to view the foetus. Unlike x-rays, ultrasound does not expose you to radiation


HOW IS USG OBSTETRICS TEST PERFORMED


During an ultrasound test, you lie on a table. A special technician or doctor moves a device called a transducer over part of your body. The transducer sends out sound waves, which bounce off the tissues inside your body. The transducer also captures the waves that bounce back. The ultrasound machine creates images from the sound waves.


WHY IS USG OBSTETRICS TEST DONE


  • Help to monitor the growth of an unborn child, and check for abnormalities. An ultrasound scan is routine for pregnant women
  • Detect abnormalities of heart structures such as the heart valves. (An ultrasound scan of the heart is called an echocardiogram.)
  • Help to diagnose problems of the liver, gallbladder (such as gallstones), pancreas, thyroid gland, lymph nodes, ovaries, testes, kidneys, bladder and breast. For example, it can help to determine if an abnormal lump in one of these organs is a solid tumour or a fluid-filled cyst
  • Detect abnormal widening of blood vessels (aneurysms)

USG OBSTETRICS TEST RISKS


No known side-effects


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