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Ultraschall Med. 2001 Oct;22(5):208-12.

Evaluation of first trimester pregnancy in cases of threatened abortion by means of doppler sonography.

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1
Department of Ultrasound Diagnostic, Institute of Gynecology and Obstetrics, Medical University of Lódz, Poland.

Abstract

OBJECTIVE:

Threatened abortion is one of the major problems in Obstetrics and applies to (1/3) of all pregnancies. The aim of this study was to establish normal ranges for Doppler indices of the flow velocity waveforms in uterine arteries (S/D, RI, PI) and ss-hCG serum concentrations in a control group in the first trimester of pregnancy. The obtained values were compared with those obtained in pregnancies threatened by abortion (6 - 11 weeks).

METHODS:

Investigated groups: 55 controls and 47 with symptoms of threatened abortion, 27 of them aborted. Ultrasound examinations were carried out by means of an endovaginal probe. Serum ss-hCG was determined by immunoenzymatic method. The standards for measured values were established based on means from measurements obtained in the control group in the corresponding week of pregnancy.

RESULTS:

We observed negative correlation between gestational age and RI and negative tendencies for S/D and PI indices in the control group. Positive correlation (p < 0.05) was found between ss-hCG serum concentration and gestational age (up to 9(th) week) and significant differences in ss-hCG concentrations between both examined groups. There were also statistical differences for S/D, RI and PI indices in both analyzed groups for each week of pregnancy.

CONCLUSION:

We conclude that measurement of the quality parameters of the flow velocity waveforms in uterine arteries and calculation of beta-hCG concentration in serum are useful methods in diagnosis of threatened abortion in the first trimester of pregnancy.

PMID:
11607888
DOI:
10.1055/s-2001-17896
[Indexed for MEDLINE]
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