Lege Artis Medicinae

[Transvaginal color doppler in early pregnancy]

SZABÓ István1, CSABAY László1, NÉMET János1, PAPP Zoltán1

AUGUST 31, 1993

Lege Artis Medicinae - 1993;3(08)

[The authors performed serial examinations using a transvaginal transducer with color Doppler facilities in normal and pathologic early pregnancies in order to examine the circulatory changes in the female genital tract and developing embryo. This is a preliminary study demonstrating the application of TVCD and summarizing the main circulatory characteristics in early pregnancy as a part of a detailed program investigating circulation in the first trimester of pregnancy. Parallel with the implantation as a result of trophoblast induction the branches of the uterine arteries can be visualized by TVCD, and characteristic ilus velocity waveform can be identified in each portion of this network. No diastolic flow can be detected in the embryonic arteries until 12–14 weeks of gestation. The fetal heart rate shows a characteristic change between the 5th and the 14th week of gestation. Examination of the circulatory changes in pathologic early pregnancies helps to establish an exact clinical diagnosis and to choose the proper treatment. The recent advent of the transvaginal probe with color Doppler imaging has permitted accurate studies of the circulatory changes in the female reproductive organs to be performed and provided more information about physiologic and pathologic processes in early pregnancy than all the non-invasive systems developed previously. ]


  1. Semmelweis Orvostudományi Egyetem I. sz. Szülészeti és Nőgyógyászati Klinika Budapest



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[Investigation of uterine circulation by transvaginal color doppler in early pregnancy]

SZABÓ István, CSABAY László, NÉMET János, PAPP Zoltán

[The circulatory changes and the characteristics of blood flow in certain uterine vessels can be detected by transvaginal color Doppler in early pregnancy. The uterine circulation of 53 patients with normal intrauterine pregnancies at 4–14 weeks of gestation and 104 non pregnant patients were investigated. The main uterine artery, arcuated and spiral arteries were demonstrated by color Doppler in all patients in early pregnancy and characteristic flow velocity waveforms were obtained in 94% of the cases. The impedance to flow in the main uterine artery was significantly lower and the mean velocity was significantly higher in early pregnancy than in non pregnant patients. The indices of impedance to flow decreased with gestation in the uterine branches and there was a progressive fall in these indices from the uterine artery to the spiral arteries. Mean blood velocity in the uterine artery increased with gestation. The hemodynamical changes which are proportional to gestation age give an indirect evidence of the adequate maternal blood supply for the growing embryo.]

Lege Artis Medicinae

[Transvaginal ultrasonography of embryo development in prematurity, sono-embryology I. The embryo and its appendages]

CSABAY László, SZABÓ István, NÉMETH János, PAPP Zoltán

[The authors performed serial examinations by a high resolution transvaginal transducer during the first trimester of pregnancy to show the most important stages of the early embryonal development. This is a preliminary study to a prospective, detailed screening programme in the first trimester of pregnancy. The earliest sign of pregnancy can be detected at the 29–31st days of menstrual age using vaginal transducer. During the 5th week the (secondary) yolk sac can be seen, which is an unambiguous evidence of an intrauterine pregnancy. The living embryo can be de monstrated on 36–38th days with the help of the pulsation of the embryonic heart tube. Certain embryonic structures appear in a defined order (developmental „calendar"). The physiologic midgutherniation can be observed during 7–11th weeks. Transvaginal sonography has gained popularity only recently due to technical advances. The main fields of use became gynaecology and early pregnancy, for there is no need to have a full bladder, for the lack of disturbing tissue layers. This method is essentially a combination of the bimanual gynaecological and the ultrasound examination. ]

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A variant of Guillain-Barre syndrome after SARS-CoV-2 vaccination: AMSAN

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Introduction - Coronavirus disease 2019 (COVID-19) is a respiratory infection that has rapidly become a global pandemic and vaccines against SARS-CoV-2 have been developed with great success. In this article, we would like to present a patient who developed Guillain-Barré syndrome (GBS), which is a serious complication after receiving the inactive SARS-CoV-2 vaccine (CoronaVac). Case report – A 76-year-old male patient presented to the emergency department with nine days of progressive limb weakness. Two weeks prior to admission, he received the second dose of CoronaVac vaccine. Motor examination revealed decreased extremity strength with 3/5 in the lower extremities versus 4/5 in the upper extremities. Deep tendon reflexes were absent in all four extremities. Nerve conduction studies showed predominantly reduced amplitude in both motor and sensory nerves, consistent with AMSAN (acute motor and sensory axonal neuropathy). Conclusion - Clinicians should be aware of the neuro­logical complications or other side effects associated with COVID-19 vaccination so that early treatment can be an option.