| Ultrasound probe pressure but not maternal Valsalva maneuver alters Doppler parameters during fetal middle cerebral artery Doppler ultrasonography. | |
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MedLine Citation:
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PMID: 21064194 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVE: To determine the effects of increased ultrasound probe pressure and maternal Valsalva maneuver (VM) on the middle cerebral artery (MCA) Doppler ultrasonography in fetuses. METHODS: A total of 120 healthy pregnant women in second and third trimesters were enrolled in the study. MCA blood flow was measured by pulsed Doppler sonography in 60 fetuses (24 and 40 weeks' gestation) before and after the application of increased ultrasound probe pressure. In the other 60 fetuses (32 and 36 weeks' gestation), sonography was performed before and after maternal VM. Statistical analysis was performed by paired t-test. RESULTS: The pressure induced by the ultrasound probe induced a significant increase in the pulsatility index (PI), resistance index (RI), and peak systolic velocity (PSV); however, a significant decrease was found in the end-diastolic velocity (EDV) (p < 0.05). No statistically significant difference was found in the mean flow velocity (MFV). Moreover, maternal VM did not have any effect on the PI, RI, EDV, or MFV. CONCLUSION: Fetal MCA Doppler assessment is affected by increased probe pressure but not by maternal VM. Thus, the application of the MCA Doppler sonography should be undertaken in the head of fetuses without any probe pressure and without maternal VM. |
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Authors:
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Yi-Ming Su; Guo-Rong Lv; Xiao-Kang Chen; Shao-Hui Li; Hui-Tong Lin |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Prenatal diagnosis Volume: 30 ISSN: 1097-0223 ISO Abbreviation: Prenat. Diagn. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8106540 Medline TA: Prenat Diagn Country: England |
Other Details:
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Languages: eng Pagination: 1192-7 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 John Wiley & Sons, Ltd. |
Affiliation:
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Department of Ultrasound, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, P R China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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