Re: Simultaneous recording of pulsed‐wave Doppler signals in innominate vein and transverse aortic arch: new technique to evaluate atrioventricular conduction and fetal heart rhythm

2019 ◽  
Vol 53 (2) ◽  
pp. 277-277
Author(s):  
B. Mosimann ◽  
L. Raio
Keyword(s):  
Aortic Arch ◽  
Fetal Heart ◽  
Heart Rhythm ◽  
Simultaneous Recording ◽  
Atrioventricular Conduction ◽  
Innominate Vein ◽  
New Technique ◽  
Doppler Signals ◽  
Pulsed Wave Doppler

scholarly journals Fetal Dual Doppler Echocardiography

2014 ◽  
Vol 8 (4) ◽  
pp. 376-381
Author(s):  
Takashi Kaji ◽  
Kazuhisa Maeda ◽  
Atsuko Hichijo ◽  
Yohei Takahashi ◽  
Soichiro Nakayama ◽  
...  
Keyword(s):  
Doppler Echocardiography ◽  
Cardiac Rhythm ◽  
Simultaneous Recording ◽  
Image Resolution ◽  
Descending Aorta ◽  
Doppler Signals ◽  
Precise Diagnosis ◽  
Pulsed Wave Doppler ◽  
A New Technique ◽  
Fetal Position

ABSTRACT Dual Doppler echocardiography is a recently developed technique performed using an instrument with two separate sample gates, allowing simultaneous recording of signals from two locations. We describe the use of dual Doppler echocardiography to assess fetal cardiac rhythm. Fetal arrhythmias are common and encountered in 1 to 2% pregnancies. They often resolve spontaneously and do not require treatment, but sometimes lead to severe morbidity and mortality. Fetal arrhythmias are responsive to fetal therapy and require appropriate management through accurate diagnosis. Pulsed wave Doppler and M-mode echocardiography are widely used to assess fetal cardiac rhythm. Both methods have advantages and limitations, which are influenced by fetal position, image resolution, and the complexity of the arrhythmia. We developed a new technique that records pulsed wave Doppler signals in the hepatic vein (HV) and the descending aorta (DAo) simultaneously using dual Doppler. This method is less influenced by fetal position and the complexity of the arrhythmia, and the images have better resolution than those acquired using conventional Doppler methods in most cases. Although, electrical parameters, such as the QT interval cannot be evaluated, dual Doppler recording of flows in HV and DAo is an efficient and effective method for assessing fetal cardiac rhythms, allowing precise diagnosis of cardiac arrhythmias. How to cite this article Kaji T, Maeda K, Hichijo A, Takahashi Y, Nakayama S, Irahara M. Fetal Dual Doppler Echocardiography. Donald School J Ultrasound Obstet Gynecol 2014; 8(4):376-381.

Fetal breathing classification from fetal heart rate Doppler signals

1998 ◽  
Vol 5 (1) ◽  
pp. 168A-168A
Author(s):  
J WILSON ◽  
C LOWERY ◽  
P MURPHY ◽  
W RUSSELL ◽  
R WALLS
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Doppler Signals ◽  
Fetal Breathing

Aneurysm Formation of Cervical Aortic Arch Combined with Subaortic Left Innominate Vein: Case Report

2004 ◽  
Vol 50 (1) ◽  
pp. 27
Author(s):  
Young Min Han ◽  
Ja Hong Gu ◽  
Gong Yong Jin ◽  
Hyo Sung Kwak ◽  
Gyung Ho Chung ◽  
...  
Keyword(s):  
Case Report ◽  
Aortic Arch ◽  
Innominate Vein ◽  
Aneurysm Formation ◽  
Left Innominate Vein

An unusual case of tetralogy of Fallot with an absent pulmonary valve associated with a retro-aortic innominate vein in a patient with a 16p12.2 microdeletion

2021 ◽  
pp. 1-2
Author(s):  
Niall Linnane ◽  
Andrew Green ◽  
Colin J. McMahon
Keyword(s):  
Aortic Arch ◽  
Tetralogy Of Fallot ◽  
Congenital Heart Defects ◽  
Congenital Heart ◽  
Unusual Case ◽  
Pulmonary Valve ◽  
Heart Defects ◽  
Innominate Vein ◽  
Absent Pulmonary Valve ◽  
Rare Association

Abstract 16p12.2 microdeletion has been associated with congenital heart defects and developmental delay. In this case, we describe the rare association between tetralogy of Fallot with an absent pulmonary valve a right-sided aortic arch and a retro-aortic innominate vein associated with a 16p12.2 microdeletion and epilepsy.

scholarly journals Atrioventricular Conduction Time in Fetuses Assessed by Doppler Echocardiography

2011 ◽  
pp. 611-616 ◽  
Author(s):  
V. TOMEK ◽  
J. JANOUŠEK ◽  
O. REICH ◽  
J. GILÍK ◽  
R. A. GEBAUER ◽  
...  
Keyword(s):  
Heart Rate ◽  
Reference Values ◽  
Gestational Age ◽  
Doppler Echocardiography ◽  
Fetal Heart ◽  
Atrioventricular Conduction ◽  
Time Interval ◽  
Conduction Time ◽  
Time Intervals ◽  
Normal Limits

We performed measurement of mechanical atrioventricular conduction time intervals in human fetuses assessed by Doppler echocardiography and provided reference values. We found that atrioventricular conduction time interval was prolonged with gestational age and decreased with increasing fetal heart rate. No correlation between gestational age and heart rate was found. Using normal limits established by this study, mechanical atrioventricular interval >135 ms in the 20th week and/or >145 ms in the 26th week of gestation could be suspected of having the first-degree AV block. We compared reference values with fetuses of mothers with anti-SSA Ro/SSB La autoantibodies, being in risk of isolated congenital heart block development. One of 21 fetuses of mothers with positive autoantibodies was affected by prolonged atrioventricular interval according to the established limits, with sinus rhythm after the birth.

scholarly journals P1830 Single-beat aortic arch pulse wave velocity by dual-gate simultaneous Doppler technique: a novel method for arterial stiffness evaluation

2020 ◽  
Vol 21 (Supplement_1) ◽  
Author(s):  
F Antonini-Canterin ◽  
A Pepe ◽  
M Strazzanti ◽  
D Rivaben ◽  
E Nicolosi ◽  
...  
Keyword(s):  
Pulse Wave Velocity ◽  
Healthy Volunteers ◽  
Aortic Arch ◽  
Wave Velocity ◽  
Aortic Stiffness ◽  
Pulse Wave ◽  
Surrogate Marker ◽  
Mri Studies ◽  
Pulsed Wave Doppler ◽  
Dual Gate

Abstract Background Guidelines recommend increased aortic stiffness as a negative prognostic factor to be considered in primary and secondary prevention. Pulse wave velocity (PWV) is a frequently employed surrogate marker of aortic stiffness. Carotid-femoral PWV is the most common index in research and clinical practice, but recently several velocity-encoded magnetic resonance imaging (MRI) techniques have been used for the evaluation of regional aortic arch PWV, where the stiffness seems to be particularly relevant from a prognostic point of view. Purposes. We developed a new ultrasound method for the assessment of aortic arch PWV, using a single-beat dual-gate simultaneous pulsed wave Doppler tracing. The aim of the study is to evaluate the feasibility of this new technique in a group of healthy volunteers. Methods We examined 126 healthy volunteers (81 females, 45 males, mean age 42 + 15 years, range 13-83 years) using a commercially available machine equipped with simultaneous dual-gate pulsed Doppler. Using the suprasternal approach, the first sample volume was placed in ascending aorta and the second one in descending aorta. The distance between the two sites was directly measured with a curvilinear tracing in the middle of the vessel, following the shape of the aortic arch. PWV was calculated as the ratio of distance (in millimiters) and the transit time (in milliseconds) measured using the "foot-to-foot" method. The results are then easily transformed, simplifying in the commonly unit of meters/second. Results Feasibility was 99%; in one case it was not possible to measure accurately the aortic arch PWV due to unfavorable suprasternal acustic window. The procedure time was very fast, requiring 2 + 1 minutes. Intraobserver and interobserver variability were 7% and 9% respectively. Aortic arch PWV, as expected, showed a strong correlation with age in males as well as in females (r= 0.71 and r = 0.60 respectively, p < 0.001 for both); there was also a significant correlation with body mass index (r = 0.31; p < 0.001). Aortic arch PWV values ranged from 3.1 to 8.5 m/s, showing a substantial overlap with normal values reported in MRI studies. Conclusions The direct measurement of aortic arch PWV is feasible and reproducible with ultrasound, using the novel single-beat dual-gate simultaneous pulsed wave Doppler tracing. This technique could be implemented in a standard echo examination, that is much more available than MRI studies. Further studies are needed to evaluate if Doppler-derived aortic arch PWV could provide additional prognostic information. Abstract P1830 Figure. Aortic Arch PWV

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