Fetal cardiac muscle contractility decreases with gestational age: a color-coded tissue velocity imaging study
| Autor: | Britta Lind, K. Ferm-Widlund, Magnus Westgren, Nina Elmstedt, Lars-Åke Brodin |
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| Rok vydání: | 2012 |
| Předmět: |
lcsh:Diseases of the circulatory (Cardiovascular) system
medicine.medical_specialty Longitudinal shortening Gestational Age Color-coded tissue velocity imaging Fetal Development Contractility Fetal Heart Pregnancy Internal medicine medicine Animals Humans Radiology Nuclear Medicine and imaging Angiology Tissue velocity Fetus business.industry Research Ultrasound Cardiac muscle Gestational age General Medicine Myocardial Contraction Fetal heart contractility Echocardiography Doppler Color Intrauterine development medicine.anatomical_structure Atrioventricular plane displacement lcsh:RC666-701 Radiology Nuclear Medicine and imaging Cardiology Elasticity Imaging Techniques Gestation Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Cardiovascular Ultrasound Cardiovascular Ultrasound, Vol 10, Iss 1, p 19 (2012) |
| ISSN: | 1476-7120 |
| DOI: | 10.1186/1476-7120-10-19 |
| Popis: | Background Present data regarding how the fetal heart works and develops throughout gestation is limited. However, the possibility to analyze the myocardial velocity profile provides new possibilities to gain further knowledge in this area. Thus, the objective of this study was to evaluate human fetal myocardial characteristics and deformation properties using color-coded tissue velocity imaging (TVI). Methods TVI recordings from 55 healthy fetuses, at 18 to 42 weeks of gestation, were acquired at a frame rate of 201–273 frames/s for offline analysis using software enabling retrieval of the myocardial velocity curve and 2D anatomical information. The measurements were taken from an apical four-chamber view, and the acquired data was correlated using regression analysis. Results Left ventricular length and width increased uniformly with gestational age. Atrioventricular plane displacement and the E’/A’ ratio also increased with gestational age, while a longitudinal shortening was demonstrated. Conclusions Fetal cardiac muscle contractility decreases with gestational age. As numerous fetal- and pregnancy-associated conditions directly influence the pumping function of the fetal heart, we believe that this new insight into the physiology of the human fetal cardiovascular system could contribute to make diagnosis and risk assessment easier and more accurate. |
| Databáze: | OpenAIRE |
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