What is placenta previa?

13 May 2021

It refers to a condition during pregnancy, where the growth of the placenta remains in the lower part of the womb, partially or totally impeding the transit to the cervix. Under normal conditions, the placenta as a temporary organ that nourishes and provides oxygen to the fetus, moves towards the upper part of the uterus for the delivery to be free.

Potential causes and risks:

There are several reasons why a case of placenta previa could occur, such as, for example, being over 35 years old during pregnancy, smoking, having previously been pregnant, having a problem in the uterus or having had any surgery during pregnancy.

Signs and symptoms Placenta previa

Generally, the most characteristic sign is a significant vaginal bleeding during the third trimester of pregnancy.

Diagnosis and treatment Placenta previa

An ultrasound will be performed to confirm if you have a case of placenta previa and depending on the stage and the risk of bleeding, rest may be recommended, or a c-section may be suggested in case a premature delivery is necessary.

At ABC Medical Center we have a team of experts in the various branches of gynecology ready to serve you with world-class quality and safety standards, as well as the humane treatment and warmth that characterizes us. Come to us and you will receive the best care available in Mexico and Latin America.

We are pioneers in gynecologic laparoscopy, which allows us to offer you the best treatment options, with shorter hospitalization times, as well as a faster and less painful recovery, taking care of the aesthetic aspect with smaller scars than open surgeries. We offer you robot-assisted gynecologic surgeries, being an even less invasive and more precise procedure that provides benefits such as:

20% of the total robot surgeries of ABC Medical Center correspond to this specialty, which places us as a cutting-edge institution with vast experience and leadership in the field for the benefit of our patients.

Related centers and departments Placenta previa

Fuentes:

mayoclinic.org
cigna.com
medlineplus.gov
medigraphic.com
Oyelese, Y. and Smulian, J. (2006). Placenta Previa, Placenta Accreta, and Vasa Previa. Obstetrics & Gynecology, 108(3, Part 1), p.694.
Silver, R. (2015). Abnormal Placentation. Obstetrics & Gynecology, 126(3), pp.654- 668. Oyelese, Y. and Smulian, J. (2006). Placenta Previa, Placenta Accreta, and Vasa Previa. Obstetrics & Gynecology, 108(3, Part 1), p.694.
Villagómez-Mendoza EA, Martínez NJE, Toriz PA. Hemorragia obstétrica secundaria a placenta previa y leiomioma retroplacentario gigante cervical. Reporte de un caso. Ginecol Obstet Mex. 2019;87(03):202-207.

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The dissemination of the content of this material is for informational purposes only and does not replace, under any circumstance or condition, a consultation with a specialist doctor, for which the ABC Medical Center is not responsible for the different use that may be given to it. If you require more information related to the subject, we suggest you contact the specialist doctor you trust directly.

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Comparison of COVID-19 vaccines

Pfizer-
BioNTech

Pfizer-BioNTech

What is its effectiveness and what does it refer to?

Vaccine type: mRNA
Effectiveness: 95% after the second dose in the prevention of symptomatic COVID-19.

No Does not contain egg, latex, or preservatives.

How many doses are needed?
Two doses are needed, at least 21 days apart (or up to six weeks apart, if necessary).

Who should or shouldn’t get the vaccine?
People who should receive the vaccine are those over 16 years old.
People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine such as polyethylene glycol (PEG) or polysorbate.

What are the possible side effects of the vaccine?
Pain where the injection was given, fatigue, headache, muscle pain, chills, joint pain, fever, nausea, malaise, and swollen lymph nodes.

How long will it take for me to be protected and what does it protect me from?
After 14 days of having the complete scheme (after the administration of the 2nd dose), the protection period is still under study. It protects us from serious COVID-19 or requiring hospitalization.

Moderna

What is its effectiveness and what does it refer to?

Vaccine type: mRNA
Effectiveness: 94.5% after the second dose in the prevention of symptomatic COVID-19.

Does not contain egg, latex, or preservatives.

How many doses are needed?
Two doses are needed, at least 28 days apart (or up to six weeks apart, if necessary).

Who should or shouldn’t get the vaccine?
People who should receive the vaccine are those over 18 years old.
People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine.

What are the possible side effects of the vaccine?
Pain where the injection was given, fatigue, headache, muscle pain, chills, joint pain, fever, nausea, and swollen lymph nodes in the arm in which you received the injection.

Janssen/
Johnson
& Johnson

Janssen/ Johnson & Johnson

What is its effectiveness and what does it refer to?

Vector-based vaccine.
Effectiveness: 72.0% in the prevention of symptomatic COVID-19.
85% in the prevention of severe COVID-19.

Does not contain egg, latex, or preservatives./strong>

How many doses are needed?
Only one dose in needed.

What are the possible side effects of the vaccine?
Pain where the injection was given, headache, fatigue, muscle pain, chills, fever, and nausea.

How long will it take for me to be protected and what does it protect me from?
After 28 days of having the complete scheme (the last dose applied), the protection period is still under study. It protects us from 85% serious COVID-19 or requiring hospitalization.

AstraZeneca
and
Oxford
University

AstraZeneca and Oxford University

What is its effectiveness and what does it refer to?

Adenovirus vector-based vaccine.
Effectiveness: 82% after the second dose in the prevention of symptomatic COVID-19.

How many doses are needed?
Two doses are needed, at least 56 days apart (or up to 84 days apart, if necessary).

What are the possible side effects of the vaccine?
Pain where the injection was given, fatigue, headache, myalgia, arthralgia, and fever, which were mild to moderate in intensity and disappeared within 48 hours of vaccination.

Sputnik V

What is its effectiveness and what does it refer to?

Adenovirus vector-based vaccine.
Effectiveness: 92% after the second dose in the prevention of symptomatic COVID-19.

How many doses are needed?
Two doses are needed, at least 21 days apart (or up to six weeks apart, if necessary).

What is placenta previa?

Potential causes and risks:

Signs and symptoms Placenta previa

Diagnosis and treatment Placenta previa

Related centers and departments Placenta previa

Fuentes:

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Specialist in Placenta previa