First trimester fetal cardiac activity. Sonographic documentation of a progressive early rise in heart rate.
Publication
, Journal Article
Hertzberg, BS; Mahony, BS; Bowie, JD
Published in: J Ultrasound Med
October 1988
The heart rates of 124 first trimester fetuses were determined with real-time sonography and were analyzed with regard to gestational age. The mean embryonic heart rate increased from 101 beats per minute (bpm) at 5 to 5.95 menstrual weeks to 143 bpm at 8 to 8.95 weeks. After nine weeks, the rate reached a plateau, ranging from 137 to 144 bpm. Slower heart rates are normal early in the first trimester and should not be misinterpreted as an abnormal finding or mistaken for maternal pulsations.
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Published In
J Ultrasound Med
DOI
ISSN
0278-4297
Publication Date
October 1988
Volume
7
Issue
10
Start / End Page
573 / 575
Location
England
Related Subject Headings
- Ultrasonography
- Pregnancy Trimester, First
- Pregnancy
- Nuclear Medicine & Medical Imaging
- Humans
- Heart Rate, Fetal
- Female
- 3202 Clinical sciences
- 1103 Clinical Sciences
Citation
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ICMJE
MLA
NLM
Hertzberg, B. S., Mahony, B. S., & Bowie, J. D. (1988). First trimester fetal cardiac activity. Sonographic documentation of a progressive early rise in heart rate. J Ultrasound Med, 7(10), 573–575. https://doi.org/10.7863/jum.1988.7.10.573
Hertzberg, B. S., B. S. Mahony, and J. D. Bowie. “First trimester fetal cardiac activity. Sonographic documentation of a progressive early rise in heart rate.” J Ultrasound Med 7, no. 10 (October 1988): 573–75. https://doi.org/10.7863/jum.1988.7.10.573.
Hertzberg BS, Mahony BS, Bowie JD. First trimester fetal cardiac activity. Sonographic documentation of a progressive early rise in heart rate. J Ultrasound Med. 1988 Oct;7(10):573–5.
Hertzberg, B. S., et al. “First trimester fetal cardiac activity. Sonographic documentation of a progressive early rise in heart rate.” J Ultrasound Med, vol. 7, no. 10, Oct. 1988, pp. 573–75. Pubmed, doi:10.7863/jum.1988.7.10.573.
Hertzberg BS, Mahony BS, Bowie JD. First trimester fetal cardiac activity. Sonographic documentation of a progressive early rise in heart rate. J Ultrasound Med. 1988 Oct;7(10):573–575.
Published In
J Ultrasound Med
DOI
ISSN
0278-4297
Publication Date
October 1988
Volume
7
Issue
10
Start / End Page
573 / 575
Location
England
Related Subject Headings
- Ultrasonography
- Pregnancy Trimester, First
- Pregnancy
- Nuclear Medicine & Medical Imaging
- Humans
- Heart Rate, Fetal
- Female
- 3202 Clinical sciences
- 1103 Clinical Sciences