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Chapter-08 Amniocentesis

BOOK TITLE: Ultrasound Guided ‘Invasive Prenatal Diagnostic Techniques’ Simplified

Author
1. Sahetya Raju R
ISBN
9789352702336
DOI
10.5005/jp/books/14151_9
Edition
1/e
Publishing Year
2018
Pages
12
Author Affiliations
1. Mumbai, Maharashtra, India, A Postgraduate from Seth GS Medical College, Mumbai, Maharashtra, India, Indian Society for Prenatal Diagnosis and Therapy (ISPAT); Pushpaa Hospital, Hinduja Hospital, Mumbai, Maharashtra, India
Chapter keywords
Amniocentesis, amniotic fluid, gestation, ultrasound-guided procedure, needle beam alignment, multiple gestation, bloody tap, genetic lab, cytogenetic analysis

Abstract

Midtrimester amniocentesis, the aspiration of amniotic fluid, has traditionally been performed between 15 and 18 weeks of gestation. Amniocentesis is routinely an outpatient facility and an ultrasound-guided procedure. Having confirmed fetal viability, an accessible pool of amniotic fluid should be determined. Ideally passage through the placenta should be avoided but, if this is not achievable, a transplacental approach may be employed. This chapter covers the in plane approach – needle beam alignment, multiple gestations, bloody tap, possible problems in amniocentesis, amniotic fluid sample collection and transport to the genetic lab, cytogenetic analysis, and safety.

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