A FETAL SUPRAVENTRICULAR TACHYCARDIA WHICH CONVERTED FROM BLOCKED PREMATURE ATRIAL CONTRACTIONS

Ji-Hyun Lim; Jin-Young Choi; Hye-In Sung; Ilwoon Ji; Heon-Seok Han

doi:10.5468/KJOG.2011.54.7.369

Journal List > Korean J Obstet Gynecol > v.54(7) > 1088299

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Lim, Choi, Sung, Ji, and Han: A FETAL SUPRAVENTRICULAR TACHYCARDIA WHICH CONVERTED FROM BLOCKED PREMATURE ATRIAL CONTRACTIONS

Case Report

Korean J Obstet Gynecol 2011;54(7):369-372.

Published online: 21 January 2011

DOI: https://doi.org/10.5468/KJOG.2011.54.7.369

A FETAL SUPRAVENTRICULAR TACHYCARDIA WHICH CONVERTED FROM BLOCKED PREMATURE ATRIAL CONTRACTIONS

Ji-Hyun Lim, MD¹, Jin-Young Choi, MD¹, Hye-In Sung, MD¹, Ilwoon Ji, MD¹, Heon-Seok Han, MD²

¹Department of Obstetrics and Gynecology, Chungbuk National University College of Medicine, Cheongju, Korea

²Department of Pediatrics, Chungbuk National University College of Medicine, Cheongju, Korea

Corresponding author: Ilwoon Ji, MD Department of Obstetrics and Gynecology, Chungbuk National University College of Medicine, 410 Sangbong-ro, Heungdeok-gu, Cheongju 361-763, Korea Tel: +82-43-269-6053 Fax: +82-43-275-7359 E-mail: iwji@chungbuk.ac.kr

Received 31 January 2011 Revised 13 May 2011 Accepted 16 May 2011

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We are reporting a case of fetal supraventricular tachycardia (SVT) which converted from blocked premature atrial contractions (PAC). It has been treated by verapamil in utero. We suggest that fetal PACs are usually benign phenomena which resolve spontaneously, but require some follow-up to exclude the development of SVT. SVT is rare but complicated by fetal congestive heart failure or even fetal death.

Keywords: Tachycardia, supraventricular, Atrial premature complexes

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Fig. 1.

Pulse Doppler shows skipped beats and M-mode reveals blocked premature atrial contractions (PAC).

Fig. 2.

M-mode shows supraventricular tachycardia which beats 234 per minutes.

Fig. 3.

Heart rate is 216 beats per minute but skipped beats in every 2 to 5 beats.

Fig. 4.

Fetal heart rate returned normal (143 beats per minute [BPM]) by Verapamil and the baby has normal regular heart rate (135 BPM) without medication.

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