Case Study Placenta Previa Totalis

Author

Ronan Bakker, MD Resident Physician, Department of Obstetrics and Gynecology, Virginia Commonwealth University Health System

Ronan Bakker, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists, American Medical Association

Disclosure: Nothing to disclose.

Coauthor(s)

Ronald M Ramus, MD Professor of Obstetrics and Gynecology, Director, Division of Maternal-Fetal Medicine, Virginia Commonwealth University School of Medicine

Ronald M Ramus, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists, American Institute of Ultrasound in Medicine, Medical Society of Virginia, Society for Maternal-Fetal Medicine

Disclosure: Nothing to disclose.

Specialty Editor Board

John G Pierce, Jr, MD Associate Professor, Departments of Obstetrics/Gynecology and Internal Medicine, Medical College of Virginia at Virginia Commonwealth University

John G Pierce, Jr, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists, Association of Professors of Gynecology and Obstetrics, Christian Medical and Dental Associations, Medical Society of Virginia, Society of Laparoendoscopic Surgeons

Disclosure: Nothing to disclose.

Chief Editor

Carl V Smith, MD The Distinguished Chris J and Marie A Olson Chair of Obstetrics and Gynecology, Professor, Department of Obstetrics and Gynecology, Senior Associate Dean for Clinical Affairs, University of Nebraska Medical Center

Carl V Smith, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists, American Institute of Ultrasound in Medicine, Association of Professors of Gynecology and Obstetrics, Central Association of Obstetricians and Gynecologists, Society for Maternal-Fetal Medicine, Council of University Chairs of Obstetrics and Gynecology, Nebraska Medical Association

Disclosure: Nothing to disclose.

Additional Contributors

Saju Joy, MD, MS Associate Director, Division Chief of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Carolinas Medical Center

Saju Joy, MD, MS is a member of the following medical societies: American College of Obstetricians and Gynecologists, American Institute of Ultrasound in Medicine, Society for Maternal-Fetal Medicine, American Medical Association

Disclosure: Nothing to disclose.

Matthew M Finneran, MD Resident Physician, Department of Obstetrics and Gynecology, Carolinas Healthcare System

Disclosure: Nothing to disclose.

Acknowledgements

Pamela L Dyne, MD Professor of Clinical Medicine/Emergency Medicine, University of California, Los Angeles, David Geffen School of Medicine; Attending Physician, Department of Emergency Medicine, Olive View-UCLA Medical Center

Pamela L Dyne, MD is a member of the following medical societies: American Academy of Emergency Medicine, American College of Emergency Physicians, and Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Patrick Ko, MD Clinical Assistant Professor, Department of Emergency Medicine, New York University Medical School; Assistant Program Director, Department of Emergency Medicine, North Shore University Hospital

Patrick Ko, MD is a member of the following medical societies: American College of Emergency Physicians and Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Deborah Lyon, MD Director, Division of Gynecology, Associate Professor, Department of Obstetrics and Gynecology, University of Florida Health Science Center at Jacksonville

Deborah Lyon, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists, Association of American Medical Colleges, Association of Professors of Gynecology and Obstetrics, and Florida Medical Association

Disclosure: Nothing to disclose.

John G Pierce Jr, MD Associate Professor, Departments of Obstetrics/Gynecology and Internal Medicine, Medical College of Virginia at Virginia Commonwealth University

John G Pierce Jr, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists, Association of Professors of Gynecology and Obstetrics, Christian Medical & Dental Society, Medical Society of Virginia, and Society of Laparoendoscopic Surgeons

Disclosure: Nothing to disclose.

Joseph J Sachter, MD, FACEP Consulting Staff, Department of Emergency Medicine, Muhlenberg Regional Medical Center

Joseph J Sachter, MD, FACEP is a member of the following medical societies: American Academy of Emergency Medicine, American College of Emergency Physicians, American College of Physician Executives, American Medical Association, and Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Ryan A Stone, MD Fellow, Department of Obstetrics and Gynecology, Maternal-Fetal Medicine Section, Wake Forest University Health Sciences

Ryan A Stone, MD is a member of the following medical societies: Academic Pediatric Association, American College of Obstetricians and Gynecologists, American Medical Association, and Society for Maternal-Fetal Medicine

Disclosure: Nothing to disclose.

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Medscape Salary Employment

Lorene Temming, MD Resident Physician, Department of Obstetrics and Gynecology, Carolinas Medical Center

Lorene Temming, MD is a member of the following medical societies: American College of Obstetricians and Gynecologists and North Carolina Medical Society

Disclosure: Nothing to disclose.

Young Yoon, MD Associate Director, Assistant Professor, Department of Emergency Medicine, Mount Sinai Medical Center

Young Yoon, MD is a member of the following medical societies: Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Mark Zwanger, MD, MBA Assistant Professor, Department of Emergency Medicine, Jefferson Medical College of Thomas Jefferson University

Mark Zwanger, MD, MBA is a member of the following medical societies: American Academy of Emergency Medicine, American College of Emergency Physicians, and American Medical Association

Disclosure: Nothing to disclose.

 

I. Introduction:

The upper part of the uterus is the most favorable area for placental implantationbecause it is rich in blood and, therefore, nutrients and oxygen. The lower uterinesegment is not and, therefore, it is possible that if the baby implants too low (low-lyingplacenta), risks of intrauterine growth restriction and preterm labor are much higher.During the last trimester, and especially in the last month, the lower uterinesegment thins appreciably and pulls up a bit, which is what causes cervical effacement(thinning) and early dilatation. If the placenta is impinging on the lower segment and isnot up in the fundus where it is supposed to be, then part of the placenta may dislodgeand hemorrhage may occur. This condition is called

PLACENTA PREVIA

.

PLACENTA PREVIA i

s an abnormal low implantation of the placenta in proximityto the internal cervical os.

Placenta previa is a condition in which the placenta attachesto the uterine wall in the lower portion of the uterus and covers all or part of the cervix.

Classification of Placenta Previa

1.Total Previa- the placenta completely covers the internal cervical os.2.Partial Previa- the placenta covers a part of the internal cervical os.3.Marginal Previa- the edge of the placenta lies at the margin of the internalcervical os and may be exposed during dilatation.4.Low-lying placenta- the placenta is implanted in the lower uterine segment butdoes not reach to the internal os of the cervix.

0 comments

Leave a Reply

Your email address will not be published. Required fields are marked *