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Prenatal Screening and Diagnosis, An Issue of Clinics in Laboratory Medicine - E-Book

Prenatal Screening and Diagnosis, An Issue of Clinics in Laboratory Medicine - E-Book

Anthony O. Odibo | David A. Krantz

(2010)

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Book Details

Abstract

This issue of Clinics in Laboratory Medicine, Guest Edited by Anthony Odibo and David Krantz, will feature article topics such as: Screening for Chromosomal abnormalities; Cystic fibrosis screening; The role of second-trimester screening, in the post-first trimester screening era; Modifying risk for Aneuploidy with second-trimester ultrasound after a positive serum screen; Cost-effectiveness of Down syndrome screening paradigms; Biochemical and biophysical screening for the risk of Preterm delivery; Pre-implantation genetic diagnosis; Prenatal testing for infectious disease, Thrombophilias, Preeclampsia, Neural Tube Defects; Management of Multiple Pregnancy; Genetic Counseling Issues in Down syndrome Screening; First Trimester Ultrasound Markers; Quality Control of Nuchal Translucency; Clinical Implications of First Trimester Screening; Adverse Pregnancy Outcomes after Positive Screening; First Trimester Combined Screening: Instant Risks Approach.

Table of Contents

Section Title Page Action Price
Front Cover cover
Contributors iii
Contents vii
Preface Prenatal Screening and Diagnosis xv
Chapter 1. Preimplantation Genetic Testing: Indications and Controversies 519
HISTORY AND DEFINITION 520
INDICATIONS FOR PGD 520
TECHNIQUES 522
GENOMIC TESTING 523
DIAGNOSTIC ACCURACY 524
CONTROVERSIES 525
SUMMARY 527
REFERENCES 528
Chapter 2. An Update on Cystic Fibrosis Screening 533
THE GENETICS OF CF 533
PHENOTYPIC VARIATION IN CFTR MUTATIONS 534
CARRIER SCREENING FOR CF 535
ANTENATAL ULTRASONOGRAPHIC FINDINGS ASSOCIATED WITH CF 539
PRENATAL DIAGNOSIS OF CF 539
REPRODUCTIVE OPTIONS FOR CARRIER COUPLES 540
SUMMARY 540
APPENDIX A: STANDARD 23-MUTATION PANEL FOR CF CARRIER SCREENING 541
REFERENCES 541
Chapter 3. An Overview of First- Trimester Screening for Chromosomal Abnormalities 545
FIRST-TRIMESTER ULTRASOUND MARKERS 546
NUCHAL TRANSLUCENCY 546
FIRST-TRIMESTER SERUM ANALYTES 548
GESTATIONAL AGE AND THE ACCURACY OF FIRST-TRIMESTER SCREEN 548
OTHER FIRST-TRIMESTER SERUM MARKERS 549
COMBINED MATERNAL SERUM AND SONOGRAPHIC MARKERS 549
COMBINING FIRST- AND SECOND-TRIMESTER SCREENING 550
CURRENT STATUS OF FIRST TRIMESTER–BASED ANEUPLOIDY SCREENING IN THE UNITED STATES 552
SUMMARY 553
REFERENCES 553
Chapter 4. First-Trimester Genetic Counseling: Perspectives and Considerations 557
BACKGROUND 557
CONSIDERATIONS 558
PERSPECTIVES 559
CONSIDERATIONS 560
REFERENCES 562
Chapter 5. First-Trimester Screening for Chromosomal Abnormalities: Advantages of an Instant Results Approach 565
BIOCHEMICAL SCREENING FOR FETAL ANEUPLOIDY 566
FIRST TRIMESTER SCREENING AND INTEGRATED ALGORITHMS 566
BENEFITS AND CONTROVERSIES IN FIRST TRIMESTER SCREENING 567
LOGISTICS OF FIRST TRIMESTER AND SEQUENTIAL SCREENING PROGRAMS 568
SUMMARY 570
REFERENCES 570
Chapter 6. Additional First-Trimester Ultrasound Markers 573
FIRST-TRIMESTER ULTRASOUND (11–13 +6 WEEKS’ GESTATION) 573
ULTRASOUND MARKERS 574
MARKERS LOCATED ON THE FETAL HEAD AND NECK 575
MARKERS WITHIN THE FETAL CARDIOVASCULAR SYSTEM 579
ACQUIRING PROFICIENCY IN ULTRASOUND MARKER EVALUATION 582
USE OF ADDITIONAL ULTRASOUND MARKERS IN SCREENING FOR TRISOMY 21 582
SUMMARY 583
REFERENCES 583
Chapter 7. Monitoring Quality Control of Nuchal Translucency 593
MAIN SCREENING MARKERS 593
MOST DISCRIMINATORY SINGLE MARKER 594
MULTIMARKER SCREENING 594
MULTIMARKER TESTS INCLUDING NT 595
MODEL PREDICTIONS 596
CONSEQUENCES OF NT ERRORS 597
EVIDENCE FOR SUBOPTIMAL PERFORMANCE 599
QUALITY CONTROL METHODS 600
QUALITY MONITORING RESULTS 602
SUMMARY 602
REFERENCES 603
Chapter 8. Clinical Implications of First-Trimester Screening 605
PHYSICIAN EDUCATION 605
RATE OF INVASIVE PRENATAL DIAGNOSIS 606
GESTATIONAL AGE AT ABORTION 607
ADDITIONAL BENEFITS OF ULTRASOUND AT 11 TO 14 WEEKS 608
ADDITIONAL BENEFITS OF BIOCHEMISTRY AT 9 TO 14 WEEKS 609
SUMMARY 609
REFERENCES 609
Chapter 9. Adverse Pregnancy Outcomes After Abnormal First- Trimester Screening for Aneuploidy 613
THICKENED NUCHAL TRANSLUCENCY 613
ABNORMAL FIRST TRIMESTER ANATOMY 617
EXTREMES OF FIRST TRIMESTER MATERNAL SERUM ANALYTES AND ADVERSE PREGNANCY OUTCOMES 617
SUMMARY 623
REFERENCES 623
Chapter 10. Cost-Effectiveness of Down Syndrome Screening Paradigms 629
ECONOMIC ANALYSES IN HEALTH CARE 630
COST-EFFECTIVENESS ANALYSIS METHODOLOGY 631
COST-EFFECTIVENESS ANALYSIS OF THE PRENATAL DIAGNOSIS 633
ECONOMIC ANALYSES OF FIRST-TRIMESTER SCREENING FOR DOWN SYNDROME 635
COST EFFECTIVENESS OF CONTINGENT SCREENING 638
METHODOLOGIC ISSUES AND CONCERNS 639
SUMMARY 640
REFERENCES 640
Chapter 11. Screening and Testing in Multiples 643
MULTIPLE PREGNANCIES 643
DIAGNOSTIC PROCEDURES 646
CVS AND MFPR 650
SUMMARY 651
REFERENCES 652
Chapter 12. Noninvasive Prenatal Diagnosis: 2010 655
FETAL CELLS 656
ENDOCERVICAL FETAL TROPHOBLASTS 656
FREE-FETAL DNA AND RNA 658
RNA–SINGLE-NUCLEOTIDE POLYMORPHISM ALLELIC RATIOS 659
DIGITAL POLYMERASE CHAIN REACTION 660
MULTIPLE PARALLEL GENOMIC SEQUENCING 660
RH DISEASE AND OTHER MENDELIAN DISORDERS 661
FETAL GENDER DETERMINATION 661
SUMMARY 662
REFERENCES 663
Chapter 13. The Role of Second-Trimester Serum Screening in the Post–First-Trimester Screening Era 667
SCREENING MARKERS 668
SECOND-TRIMESTER SCREENING 669
CURRENT CROSS-TRIMESTER MULTIMARKER SCREENING PROTOCOLS 671
SUMMARY 673
REFERENCES 674
Chapter 14. Modifying Risk for Aneuploidy with Second-Trimester Ultrasound After a Positive Serum Screen 677
EVOLUTION OF PRENATAL DIAGNOSIS 678
THE GENETIC SONOGRAM 679
MODIFYING ANEUPLOIDY RISK WITH THE GENETIC SONOGRAM 685
SUMMARY 690
REFERENCES 690
Chapter 15. Biophysical and Biochemical Screening for the Risk of Preterm Labor 693
CERVICAL LENGTH ASSESSMENT 694
FETAL FIBRONECTIN 699
GESTATIONAL AGE- AND RISK-SPECIFIC APPROACH TO USING CERVICAL LENGTH AND FFN IN CLINICAL EVALUATION AND MANAGEMENT 701
SUMMARY 704
REFERENCES 704
Chapter 16. Toxoplasmosis, Parvovirus, and Cytomegalovirus in Pregnancy 709
TOXOPLASMOSIS 709
PARVOVIRUS 712
CYTOMEGALOVIRUS 714
SUMMARY 716
REFERENCES 717
Chapter 17. Screening for Open Neural Tube Defects 721
REFERENCES 724
Chapter 18. First- and Second-Trimester Screening for Preeclampsia and Intrauterine Growth Restriction 727
PATHOPHYSIOLOGY 728
PRINCIPLES OF SCREENING 728
SPECIFIC SCREENING TESTS 730
SUMMARY 740
REFERENCES 740
Chapter 19. Prenatal Screening for Thrombophilias: Indications and Controversies 747
INHERITED THROMBOPHILIAS 748
ACQUIRED THROMBOPHILIAS 749
HISTORY OF VTE 750
KNOWN THROMBOPHILIA WITH NO HISTORY OF VTE 751
ADVERSE PREGNANCY OUTCOMES 752
INTRAUTERINE GROWTH RESTRICTION 753
THROMBOPHILIA TESTING 754
THROMBOPROPHYLAXIS 755
SUMMARY 756
REFERENCES 756
Index 761