Can a detailed anomaly scan detect toxoplasmosis infection?

Aug 10, 2023 Source: Cainiu Health

Dr. Lv Aiming

Introduction

In general, major anomaly screening cannot detect toxoplasmosis infection. Major anomaly screening refers to a series of examinations and screening methods used to comprehensively evaluate the physical condition and structural development of the fetus, in order to identify potential congenital abnormalities and malformations. These examinations include ultrasound scans, blood tests, and other imaging studies, aiming to detect and assess fetal developmental abnormalities as early as possible.

In general, major anomaly screening cannot detect toxoplasmosis. The specific analysis is as follows:

Major anomaly screening refers to a series of examinations and screening methods used to comprehensively evaluate the physical condition and structural development of a fetus, aiming to identify possible congenital abnormalities and malformations. These examinations include ultrasound scans, blood tests, and other imaging studies, all designed to detect and assess fetal developmental abnormalities as early as possible. Toxoplasma gondii is a parasitic organism that can infect humans and other mammals. Infection typically spreads through ingestion, contact, or inhalation of oocysts from infected animals. Major anomaly screening primarily relies on ultrasound to evaluate fetal anatomy and organ development, focusing on detecting structural abnormalities and malformations. However, toxoplasmosis is not diagnosed based on structural or organ abnormalities in the fetus, but rather is identified as a pathogenic infection. Therefore, major anomaly screening cannot detect toxoplasmosis.

If there is concern about possible toxoplasmosis infection, it is recommended to visit a正规 hospital and undergo specific tests such as Toxoplasma IgM testing and Toxoplasma antibody assays.

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What dimension of ultrasound is the "major anomaly scan"?

In general, the detailed anomaly scan can be performed using two-dimensional, three-dimensional, or four-dimensional ultrasound. The full name of this scan is "mid-trimester fetal ultrasound screening for major anomalies," which refers to an ultrasound examination conducted during the middle stage of pregnancy. The optimal time for mid-trimester anomaly screening is between 18 and 24 weeks of gestation, as this period is best suited for evaluating fetal anatomy and detecting structural abnormalities.

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Is the major anomaly scan classified as level two or level three?

Major anomaly screening generally falls under Level 3 prenatal screening. It primarily refers to a four-dimensional color ultrasound examination performed between 22 and 28 weeks of pregnancy to determine whether fetal abnormalities are present. This examination allows for a clear assessment of whether the fetus's limbs, body, and internal organs show any abnormalities. During the 4D ultrasound, the movements of the fetus within the uterine cavity can be directly observed on an electronic screen.

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Does the major anomaly scan include an examination of the reproductive system?

Anomaly scan is a routine prenatal screening examination primarily used to assess fetal development and rule out potential congenital abnormalities. The anomaly scan is usually performed between the 18th and 20th weeks of pregnancy, using ultrasound imaging to observe the fetus's organs and structures. During the anomaly scan, the doctor thoroughly examines various fetal organs and systems, including the reproductive system.

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Which is better: 4D ultrasound or major anomaly scan?

4D ultrasound and anomaly scan (detailed structural scan) each have their strengths in fetal examination: 4D ultrasound is better for assessing the fetal heart, while the anomaly scan is superior for detecting overall fetal developmental abnormalities. 4D ultrasound is primarily used to check for congenital heart defects, aiding in the diagnosis of conditions such as fetal rheumatic heart disease and tetralogy of Fallot. It provides a clearer, three-dimensional visualization of the fetal heart's thickness, shape, and size.