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Wu YC, Chen CH, Lu HT, Lee YL, Chen PY, Wu TY, Tien MH, Wu CH, Huang JYJ, Hsiao CH, Chu WC. Fetal Aortic Blood Flow Velocity and Power Doppler Profiles in the First Trimester: A Comprehensive Study Using High-Definition Flow Imaging. Bioengineering (Basel) 2024; 11:378. [PMID: 38671799 PMCID: PMC11048424 DOI: 10.3390/bioengineering11040378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 04/03/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
OBJECTIVES This study aimed to establish reference values for fetal aortic isthmus blood flow velocity and associated indices during the first trimester, utilizing a novel ultrasonographic technique known as high-definition flow imaging (HDFI). Additionally, the correlation between Doppler profiles of aortic blood flow and key fetal parameters, including nuchal thickness (NT), crown-rump length (CRL), and fetal heartbeat (FHB), was investigated. METHODS A total of 262 fetuses were included in the analysis between December 2022 and December 2023. Utilizing 2D power Doppler ultrasound images, aortic blood flow parameters were assessed, including aortic peak systolic velocity (PS), aortic end-diastolic velocity (ED), aortic time average maximal velocity (TAMV), and various indices such as aortic systolic velocity/diastolic velocity (S/D), aortic pulsatile index (PI), aortic resistance index (RI), aortic isthmus flow velocity index (IFI), and aortic isthmic systolic index (ISI). Concurrently, fetal FHB, NT, and CRL were evaluated during early trimester Down syndrome screening. RESULTS Significant findings include a positive correlation between gestational age (GA) and PS (PS = 3.75 × (GA) - 15.4, r2 = 0.13, p < 0.01), ED (ED = 0.42 × (GA) - 0.61, r2 = 0.04, p < 0.01), PI (PI = 0.07 × (GA) + 1.03, r2 = 0.04, p < 0.01), and TAMV (TAMV = 1.23 × (GA) - 1.66, r2 = 0.08, p < 0.01). In contrast, aortic ISI demonstrated a significant decrease (ISI = -0.03 × (GA) + 0.57, r2 = 0.05, p < 0.05) with gestational age. No significant correlation was observed for aortic RI (p = 0.33), S/D (p = 0.39), and IFI (p = 0.29) with gestational age. Aortic PS exhibited positive correlations with NT (0.217, p = 0.001) and CRL (0.360, p = 0.000) but a negative correlation with FHB (-0.214, p = 0.001). Aortic PI demonstrated positive correlations with CRL (0.208, p = 0.001) and negative correlations with FHB (-0.176, p = 0.005). Aortic TAMV showed positive correlations with NT (0.233, p = 0.000) and CRL (0.290, p = 0.000) while exhibiting a negative correlation with FHB (-0.141, p = 0.026). Aortic ISI demonstrated negative correlations with NT (-0.128, p = 0.045) and CRL (-0.218, p = 0.001) but a positive correlation with FHB (0.163, p = 0.010). CONCLUSIONS Power Doppler angiography with Doppler ultrasound demonstrates the ability to establish accurate reference values for fetal aortic blood flow during the first trimester of pregnancy. Notably, aortic PS, TAMV, and ISI exhibit significant correlations with NT, CRL, and FHB, with ISI appearing more relevant than IFI, PS, TAMV, and FHB. The utilization of HDFI technology proves advantageous in efficiently detecting the site of the aortic isthmus compared to traditional color Doppler mode in early second trimesters.
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Affiliation(s)
- Yi-Cheng Wu
- Department of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (H.-T.L.)
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu 302048, Taiwan; (M.-H.T.); (C.-H.W.); (J.Y.-J.H.)
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu 302053, Taiwan; (P.-Y.C.); (T.-Y.W.)
| | - Ching-Hsuan Chen
- Department of Obstetrics and Gynecology, Fuyou Branch, Taipei City Hospital, Taipei 100027, Taiwan; (C.-H.C.); (Y.-L.L.)
| | - Hsin-Tzu Lu
- Department of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (H.-T.L.)
| | - Yu-Li Lee
- Department of Obstetrics and Gynecology, Fuyou Branch, Taipei City Hospital, Taipei 100027, Taiwan; (C.-H.C.); (Y.-L.L.)
| | - Pi-Yu Chen
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu 302053, Taiwan; (P.-Y.C.); (T.-Y.W.)
| | - Ting-Yu Wu
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu 302053, Taiwan; (P.-Y.C.); (T.-Y.W.)
| | - Ming-Hsun Tien
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu 302048, Taiwan; (M.-H.T.); (C.-H.W.); (J.Y.-J.H.)
| | - Chiung-Hui Wu
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu 302048, Taiwan; (M.-H.T.); (C.-H.W.); (J.Y.-J.H.)
| | - Jack Yu-Jen Huang
- Department of Obstetrics and Gynecology, Ton Yen General Hospital, Hsinchu 302048, Taiwan; (M.-H.T.); (C.-H.W.); (J.Y.-J.H.)
- Taiwan IVF Group Center for Reproductive Medicine & Infertility, Hsinchu 302053, Taiwan; (P.-Y.C.); (T.-Y.W.)
| | - Ching-Hua Hsiao
- Department of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (H.-T.L.)
- Department of Obstetrics and Gynecology, Fuyou Branch, Taipei City Hospital, Taipei 100027, Taiwan; (C.-H.C.); (Y.-L.L.)
| | - Woei-Chyn Chu
- Department of Biomedical Engineering, National Yang-Ming Chiao-Tung University, Taipei 112304, Taiwan; (Y.-C.W.); (H.-T.L.)
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Phillips AA, Punn R, Algaze C, Blumenfeld YJ, Chock VY, Kwiatkowski DM, Quirin A, Tacy TA, Thorson K, Maskatia SA. Left Ventricular Strain, Arch Angulation, and Velocity-Time Integral Ratio Improve Performance of a Clinical Pathway for Fetal Diagnosis of Neonatal Coarctation of the Aorta. Fetal Diagn Ther 2024:1-15. [PMID: 38621375 DOI: 10.1159/000538550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/22/2024] [Indexed: 04/17/2024]
Abstract
INTRODUCTION Neonatal presentation of coarctation of the aorta (CoA) is a potentially life-threatening condition that is difficult to diagnose in fetal life. We therefore sought to validate and compare novel metrics that may add diagnostic value for fetal CoA, including the diastolic to systolic aortic isthmus VTI ratio (VTId:VTIs), ascending aorta to descending aorta angle (AAo-DAo), transverse aorta to descending aorta angle (TAo-DAo), and LV longitudinal strain (LVS), then to evaluate whether these novel metrics improve specificity to identify fetuses at the highest risk for postnatal CoA without compromising sensitivity. METHODS Retrospective cohort study of fetuses followed a prospective clinical pathway and previously classified as mild, moderate, or high-risk for CoA based on standard fetal echo metrics. Novel metrics were retrospectively measured in a blinded manner. RESULTS Among fetuses with prenatal concern for CoA, VTId:VTIs, AAo-DAo angle, TAo-DAo angle, and LVS were significantly different between surgical and non-surgical cases (p < 0.01 for all variables). In the subgroup of moderate- and high-risk fetuses, the standard high-risk criteria (flow reversal at the foramen ovale or aortic arch) did not discriminate effectively between surgical and non-surgical cases. VTId:VTIs, AAo-Dao angle, Tao-DAo angle, and LVS all demonstrated greater discrimination than standard high-risk criteria, with specificity of 100% and PPV (positive predictive value) of 78-100%. CONCLUSIONS The incorporation of novel metrics added diagnostic value to our clinical pathway for fetal CoA with higher specificity than the previous high-risk criteria. The incorporation of these metrics into the evaluation of fetuses at moderate- or high-risk for surgical CoA may improve prenatal counseling, allow for more consistent surgical planning, and ultimately optimize hospital resource allocation.
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Affiliation(s)
- Aaron Anthony Phillips
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
| | - Rajesh Punn
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
- Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, California, USA
| | - Claudia Algaze
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
| | - Yair J Blumenfeld
- Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, California, USA
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California, USA
| | - Valerie Y Chock
- Neonatology and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California, USA
| | - David M Kwiatkowski
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
| | - Amy Quirin
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
- Neonatology and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California, USA
| | - Theresa A Tacy
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
- Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, California, USA
| | - Kelly Thorson
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
| | - Shiraz A Maskatia
- Divisions of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, California, USA
- Neonatology and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California, USA
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Castillo-Urquiaga W, Novoa-Reyes R, Flores-Aparco G. Evaluación integrada del bienestar en un feto apropiado para la edad gestacional (AGA) e insuficiencia placentaria aguda debido a corioamnionitis histológica: Reporte de caso. REVISTA PERUANA DE INVESTIGACIÓN MATERNO PERINATAL 2023. [DOI: 10.33421/inmp.2022315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Introducción. La insuficiencia vascular útero placentaria aguda es una causa de desenlace fetal adverso en fetos con crecimiento adecuado para la edad gestacional. Caso clínico. Paciente de 24 años, con 37 semanas de edad gestacional acude al Instituto Nacional Materno Perinatal de Lima, Perú, por referir escaso sangrado vía vaginal. En la evaluación clínica, se encontró una PA 90/60 mmHg, altura uterina 32 cm, latidos cardiacos fetales en 152. A la evaluación ecográfica, a 1 hora de la admisión se reportó feto de 2902 gramos (percentil 34 Hadlock), un Perfil Biofísico Fetal 6/8 por movimientos corporales disminuidos, Índice de líquido amniótico 11cm, placenta fúndica posterior grado III, IP Doppler de Arteria Cerebral Media 1.18, IP Doppler de la arteria umbilical 0.56, IP ductus venoso 0.26 e Istmo Aórtico con diástole ausente. La prueba estresante a las 3 horas de la admisión fue reportada en 5 puntos con movimientos fetales disminuidos, variabilidad disminuida y aceleraciones ausentes. Se indicó cesárea de emergencia obteniéndose recién nacido masculino de 2846 gr, talla 47.5 cm, Apgar 8 – 9. Se encontró líquido meconial de aspecto sanguinolento oscuro. Al corte de la placenta, se observó parénquima con infartos vellosos: recientes 10% y antiguos 5%. Vellosidades coriales hipoplásicas con espacios intervellosos amplios e infiltrado inflamatorio agudo en corion y amnios, correspondientes a Corioamnionitis aguda y funisitis aguda en el cordón umbilical. Conclusiones. La vigilancia integrada de fetos AEG permiten detectar a fetos en riesgo de desenlace adverso por una insuficiencia placentaria aguda secundaria a corioamnionitis histológica o subclínica.
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Chen Z, Zhao H, Zhao Y, Han J, Yang X, Throckmorton A, Wei Z, Ge S, He Y. Retrograde flow in aortic isthmus in normal and fetal heart disease by principal component analysis and computational fluid dynamics. Echocardiography 2022; 39:166-177. [PMID: 35026051 DOI: 10.1111/echo.15256] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/04/2021] [Accepted: 10/28/2021] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES Reverse flow Retrograde flow (RF) of blood in the aortic isthmus can be observed in different types of fetal heart disease (FHD), including abnormalities in heart structure and function. This study sought to investigate the relationship between RF and blood flow parameters, and develop a computational fluid dynamics (CFD) model to understand the mechanisms underlying this observation. MATERIAL AND METHODS A total of 281 fetuses (gestational age [GA] 26.6±.3 weeks) with FHD and 2803 normal fetuses (GA: 26.1±.1 weeks) by fetal echocardiography collected from May 2016 to December 2018. Principal component analysis (PCA) was performed to find the relationship and the CFD model reconstructed from 3D/4D spatio-temporal image correlation (STIC) images to simulate hemodynamics. RESULTS There was a significant difference in the percentages of RF between the study (80/201 (39%)) and control (29/2803 (1%)) groups (p < 0.05). The RF occur when the aorta flow rate (left heart) is reduced to 60% by CFD stimulation. Pearson correlation analysis showed significant correlations between flow rate and wall shear stress(WSS) (r = .883, p = 0.047) variables at the AI. CONCLUSION Volumetric flow rate of AO or left heart was the main component of the cause of RF. The hemodynamics of the cardiovascular system have highly complex behavior hinge on the turbulent nature of circulating blood flow.
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Affiliation(s)
- Zhuo Chen
- Echocardiography Medical Center, Maternal-Fetal Medicine center in Fetal Heart Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Hongkai Zhao
- School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China
| | - Ying Zhao
- Echocardiography Medical Center, Maternal-Fetal Medicine center in Fetal Heart Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jiancheng Han
- Echocardiography Medical Center, Maternal-Fetal Medicine center in Fetal Heart Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xu Yang
- Echocardiography Medical Center, Maternal-Fetal Medicine center in Fetal Heart Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Amy Throckmorton
- BioCirc Research Laboratory, School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania, USA
| | - Zhenglun Wei
- Department of Biomedical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts, USA
| | - Shuping Ge
- Geisinger Heart and Vascular Institute, Geisinger Medical Center, Danville, Pennsylvania, USA
| | - Yihua He
- Echocardiography Medical Center, Maternal-Fetal Medicine center in Fetal Heart Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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Maskatia SA, Kwiatkowski D, Bhombal S, Davis AS, McElhinney DB, Tacy TA, Algaze C, Blumenfeld Y, Quirin A, Punn R. A Fetal Risk Stratification Pathway for Neonatal Aortic Coarctation Reduces Medical Exposure. J Pediatr 2021; 237:102-108.e3. [PMID: 34181988 DOI: 10.1016/j.jpeds.2021.06.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 06/16/2021] [Accepted: 06/21/2021] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To test the hypothesis that a fetal stratification pathway will effectively discriminate between infants at different levels of risk for surgical coarctation and reduce unnecessary medicalization. STUDY DESIGN We performed a pre-post nonrandomized study in which we prospectively assigned fetuses with prenatal concern for coarctation to 1 of 3 risk categories and implemented a clinical pathway for postnatal management. Postnatal clinical outcomes were compared with those in a historical control group that were not triaged based on the pathway. RESULTS The study cohort comprised 109 fetuses, including 57 treated along the fetal coarctation pathway and 52 historical controls. Among mild-risk fetuses, 3% underwent surgical coarctation repair (0% of those without additional heart defects), compared with 27% of moderate-risk and 63% of high-risk fetuses. The combined fetal aortic, mitral, and isthmus z-score best discriminated which infants underwent surgery (area under the curve = 0.78; 95% CI, 0.66-0.91). Compared with historical controls, infants triaged according to the fetal coarctation pathway had fewer delivery location changes (76% vs 55%; P = .025) and less umbilical venous catheter placement (74% vs 51%; P = .046). Trends toward shorter intensive care unit stay, hospital stay, and time to enteral feeding did not reach statistical significance. CONCLUSIONS A stratified risk-assignment pathway effectively identifies a group of fetuses with a low rate of surgical coarctation and reduces unnecessary medicalization in infants who do not undergo aortic surgery. Incorporation of novel measurements or imaging techniques may improve the specificity of high-risk criteria.
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Affiliation(s)
- Shiraz A Maskatia
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA.
| | - David Kwiatkowski
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Shazia Bhombal
- Division of Neonatology and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA
| | - Alexis S Davis
- Division of Neonatology and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA
| | - Doff B McElhinney
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, CA
| | - Theresa A Tacy
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA
| | - Claudia Algaze
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA
| | - Yair Blumenfeld
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA
| | - Amy Quirin
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA
| | - Rajesh Punn
- Division of Pediatric Cardiology, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA; Fetal and Pregnancy Health Program, Stanford Children's Health, Stanford, CA
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Contag S, Visentin S, Goetzinger K, Cosmi E. Use of the Renal Artery Doppler to Identify Small for Gestational Age Fetuses at Risk for Adverse Neonatal Outcomes. J Clin Med 2021; 10:jcm10091835. [PMID: 33922550 PMCID: PMC8122939 DOI: 10.3390/jcm10091835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 11/21/2022] Open
Abstract
Objective: To measure the sensitivity and positive predictive value (PPV) for an adverse neonatal outcome among growth-restricted fetuses (FGR) comparing the cerebral–placental ratio (CPR) with the cerebral–renal ratio (CRR). Methods: Retrospective analysis of 92 women who underwent prenatal ultrasound at the University of Maryland and the University of Padua. Renal, middle cerebral and umbilical artery Doppler waveforms were recorded for all scans during the third trimester. The last scan prior to delivery was included for analysis. We calculated the test characteristics of the pulsatility indices (PI) of the umbilical and renal arteries in addition to the derived CPR and CRR to detect a composite adverse neonatal outcome. Results: The test characteristics of the four Doppler ratios to detect increased risk for the composite neonatal outcome demonstrated that the umbilical artery pulsatility index had the best test performance (sensitivity 64% (95% CI: 47–82%), PPV 24% (95% CI: 21–27), and positive likelihood ratio 2.7 (95% CI: 1.4–5.2)). There was no benefit to using the CRR compared with the CPR. The agreement between tests was moderate to poor (Kappa value CPR compared with CRR: 0.5 (95%CI 0.4–0.70), renal artery PI:−0.1 (95% CI −0.2–0.0), umbilical artery PI: 0.5 (95% CI 0.4–0.7)). Only the umbilical artery had an area under the receiver operating curve that was significantly better compared with the CPR as a reference (p-value < 0.01). Conclusions: The data that we present do not support the use of renal artery Doppler as a useful clinical test to identify a fetus at risk for an adverse neonatal outcome. Within the various indices applied to this population, umbilical artery Doppler performed the best in identifying the fetuses at risk for an adverse perinatal outcome.
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Affiliation(s)
- Stephen Contag
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology and Women’s Health, University of Minnesota, Minneapolis, MN 55455, USA;
| | - Silvia Visentin
- Department of Women and Child Heath, University of Padua School of Medicine, 35122 Padova, Italy;
| | - Katherine Goetzinger
- Division of Maternal Fetal Medicine, Department of Obstetrics, Gynecology & Reproductive Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA;
| | - Erich Cosmi
- Department of Women and Child Heath, University of Padua School of Medicine, 35122 Padova, Italy;
- Correspondence:
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Ferraz MM, Araújo FDV, Carvalho PRND, Sá RAMD. Aortic Isthmus Doppler Velocimetry in Fetuses with Intrauterine Growth Restriction: A Literature Review. REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRÍCIA 2020; 42:289-296. [PMID: 32483809 PMCID: PMC10316834 DOI: 10.1055/s-0040-1710301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Intrauterine growth restriction (IUGR) is associated with poor perinatal prognosis and a higher risk of stillbirth, neonatal death, and cerebral palsy. Its detection and the evaluation of its severity by new Doppler velocimetric parameters, such as aortic isthmus (AoI), are of great relevance for obstetrical practice. The AoI is a vascular segment that represents a point of communication between the right and left fetal circulations. It is considered to be a functional arterial shunt that reflects the relationship between the systemic and cerebral impedances, and has recently been proposed as a tool to detect the status of hemodynamic balance and prognosis of IUGR in fetuses. In the present review, we noticed that in healthy fetuses, the AoI net flow is always antegrade, but in fetuses with IUGR the deterioration of placental function leads to progressive reduction in its flow until it becomes mostly retrograde; this point is associated with a drastic reduction in oxygen delivery to the brain. The more impaired the AoI flow is, the greater is the risk of impairment in the Doppler velocimetry of other vessels; and the alterations of the AoI Doppler seem to precede other indicators of severe hypoxemia. Although there seems to be an association between the presence of retrograde flow in the AoI and the risk of long-term neurologic disability, its role in the prediction of perinatal morbi-mortality remains unclear. The AoI Doppler seems to be a promising tool in the management of fetuses with IUGR, but more studies are needed to investigate its employment in clinical practice.
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Affiliation(s)
- Mariana Martins Ferraz
- Fetal Medicine Post Graduation, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil.,Clínica Perinatal, Rio de Janeiro, RJ, Brazil
| | - Flávia do Vale Araújo
- Fetal Medicine Post Graduation, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil
| | - Paulo Roberto Nassar de Carvalho
- Fetal Medicine Post Graduation, Universidade Estácio de Sá, Rio de Janeiro, RJ, Brazil.,Fetal Medicine Department, Instituto Fernandes Figueira, Rio de Janeiro, RJ, Brazil.,Clínica Perinatal, Rio de Janeiro, RJ, Brazil
| | - Renato Augusto Moreira de Sá
- Fetal Medicine Department, Instituto Fernandes Figueira, Rio de Janeiro, RJ, Brazil.,Fetal Medicine Department, Instituto Fernandes Figueira, Rio de Janeiro, RJ, Brazil
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Villalaín C, Herraiz I, Quezada MS, Gómez-Arriaga PI, Simón E, Gómez-Montes E, Galindo A. Prognostic value of the aortic isthmus Doppler assessment on late onset fetal growth restriction. J Perinat Med 2019; 47:212-217. [PMID: 30210056 DOI: 10.1515/jpm-2018-0185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/20/2018] [Indexed: 11/15/2022]
Abstract
Background As conflicting results have been reported about the association of reversed flow on the aortic isthmus (AoI) and adverse perinatal results in fetal growth restriction (FGR), we aim to compare perinatal outcomes (including tolerance to labor induction) of late-onset FGR between those with anterograde and reversed AoI flow. Methods This was an observational retrospective cohort study on 148 singleton gestations diagnosed with late-onset FGR (diagnosis ≥32+0 weeks), with an estimated fetal weight (EFW) <10th centile and mild fetal Doppler alteration: umbilical artery (UA) pulsatility index (PI) >95th centile, middle cerebral artery (MCA)-PI <5th centile or cerebral-placental ratio <5th centile. Anterograde AoI flow was present in n=79 and reversed AoI flow in n=69. Delivery was recommended from 37 weeks in both groups. Perinatal results were compared between the groups. Results The global percentage of vaginal delivery of fetuses with anterograde and reversed blood flow was 55.7% vs. 66.7% (P=0.18) and the percentage of cesarean section (C-section) for non-reassuring fetal status was 12.7% vs. 15.9% (P=0.29), respectively. When evaluating those that underwent labor induction, the vaginal delivery rate was 67.9% vs. 77.2% (P=0.17), respectively. There were no significant differences regarding any other perinatal variables and there were no cases of severe morbidity or mortality. Conclusion We observed that the presence of reversed AoI flow does not worsen perinatal outcomes on fetuses with late-onset growth restriction with mild Doppler alterations. Attempt of labor induction is feasible in these fetuses regardless of the direction of AoI flow.
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Affiliation(s)
- Cecilia Villalaín
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain
| | - Ignacio Herraiz
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain, Tel.: 034-1-3908310
| | - Maria S Quezada
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain
| | - Paula I Gómez-Arriaga
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain
| | - Elisa Simón
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain
| | - Enery Gómez-Montes
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain
| | - Alberto Galindo
- Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynaecology, University Hospital 12 de Octubre, 12 de Octubre Research Institute (imas12), Complutense University of Madrid, Madrid, Spain
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9
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Younesi L, Ghadamzadeh M, Amjad G, Lima ZS. Color Doppler sonography of the aortic isthmus in intrauterine growth-restricted fetuses and normal fetuses. Eur J Transl Myol 2018; 28:7773. [PMID: 30662698 PMCID: PMC6317142 DOI: 10.4081/ejtm.2018.7773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 09/03/2018] [Indexed: 11/23/2022] Open
Abstract
Intrauterine growth restriction is associated with a significant increase in morbidity and perinatal mortality, and increases the likelihood of fetal death, asphyxia, meconium aspiration, hypoglycemia, and neonatal hypothermia. The aim of this study was to determine aortic isthmus flow difference by using color doppler sonography in Intrauterine growth restriction and normal fetuses. The data presented were obtained from 30 mothers, who referred to the radiology department of Akbarabadi Hospital of Tehran with a diagnosis of intrauterine growth restriction. An ultrasound was performed to determine the status of placenta, fetus, and amniotic fluid. The umbilical arterial doppler assessment was used to confirm diagnosis of intrauterine growth restriction. Thirteen (43.3%) were nulliparous mothers and 17 (56.7%) were multiparous mothers. 30 pregnant women with healthy fetuses were enrolled as control group. According to the ultrasound findings, Dactus Venus wave type was recorded in intrauterine growth restriction fetuses, which was reported as normal (26 subjects; 86.7%) and abnormal (4 subjects; 13.3%). All together, this study provides appropriate guidance to use doppler for delivery timing and to control risk factors.
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Affiliation(s)
- Ladan Younesi
- Shahid Akbar Abadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Mostafa Ghadamzadeh
- Department of Radiology, Hasheminejad Kidney Center (HKC), Iran University of Medical Sciences, Tehran, Iran
| | - Ghazaleh Amjad
- Shahid Akbar Abadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Zeinab Safarpour Lima
- Shahid Akbar Abadi Clinical Research Development Unit (ShACRDU), Iran University of Medical Sciences (IUMS), Tehran, Iran
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Tynan D, Alphonse J, Henry A, Welsh AW. The Aortic Isthmus: A Significant yet Underexplored Watershed of the Fetal Circulation. Fetal Diagn Ther 2016; 40:81-93. [PMID: 27379710 DOI: 10.1159/000446942] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 05/11/2016] [Indexed: 11/19/2022]
Abstract
The aortic isthmus (AoI) is a unique fetal watershed with a waveform reflecting its complex haemodynamic physiology. The systolic component represents left and right ventricular systolic ejection, and the diastolic component represents comparative downstream vascular impedance between the brachiocephalic and subdiaphragmatic fetal circulations. Several indices have been devised to quantify different components of the waveform, including the pulsatility index, resistance index, isthmic flow index, and recently the isthmic systolic index. There have been promising preliminary studies applying these indices to both cardiac (congenital) and extracardiac pathologies, including intrauterine growth restriction and twin-twin transfusion syndrome. However, the waveform's multifactorial origin has proven to be challenging, and the difficulty in separating various components of the waveform could explain that AoI evaluation does not have a clear clinical utility. Further research is underway to realise the full potential of this vessel in fetal cardiac and haemodynamically compromised pathological conditions. In this review article we outline the physiological origin of this Doppler waveform, describe in detail the various published indices, summarise the published literature to date, and finally outline potential future research and hopefully clinical applications.
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Affiliation(s)
- Dominique Tynan
- Faculty of Medicine, University of New South Wales, Kensington, N.S.W., Australia
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12
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Chawengsettakul S, Russameecharoen K, Wanitpongpan P. Fetal cardiac function measured by myocardial performance index of small-for-gestational age fetuses. J Obstet Gynaecol Res 2014; 41:222-8. [DOI: 10.1111/jog.12508] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 05/26/2014] [Indexed: 12/01/2022]
Affiliation(s)
- Suphang Chawengsettakul
- Department of Obstetrics and Gynecology; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - Kusol Russameecharoen
- Department of Obstetrics and Gynecology; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
| | - Prapat Wanitpongpan
- Department of Obstetrics and Gynecology; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
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