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Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses

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Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses. / Wada, N; Tachibana, D; Kurihara, Y; Nakagawa, K; Nakano, A; Terada, H; Tanaka, K; Fukui, M; Koyama, M; Hecher, K.

In: ULTRASOUND OBST GYN, Vol. 46, No. 2, 08.2015, p. 221-226.

Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

Harvard

Wada, N, Tachibana, D, Kurihara, Y, Nakagawa, K, Nakano, A, Terada, H, Tanaka, K, Fukui, M, Koyama, M & Hecher, K 2015, 'Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses', ULTRASOUND OBST GYN, vol. 46, no. 2, pp. 221-226. https://doi.org/10.1002/uog.14717

APA

Wada, N., Tachibana, D., Kurihara, Y., Nakagawa, K., Nakano, A., Terada, H., Tanaka, K., Fukui, M., Koyama, M., & Hecher, K. (2015). Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses. ULTRASOUND OBST GYN, 46(2), 221-226. https://doi.org/10.1002/uog.14717

Vancouver

Wada N, Tachibana D, Kurihara Y, Nakagawa K, Nakano A, Terada H et al. Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses. ULTRASOUND OBST GYN. 2015 Aug;46(2):221-226. https://doi.org/10.1002/uog.14717

Bibtex

@article{2d47b1854b014af6aa5bad5360a4ce7e,
title = "Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses",
abstract = "OBJECTIVE: To investigate time intervals of the ductus venosus (DV) flow velocity waveform (FVW) and those of cardiac cycle which correspond with each DV-FVW component in fetuses complicated with intrauterine growth restriction (IUGR) due to placental insufficiency.METHODS: Time intervals for systolic (S) and diastolic (D) components were measured in DV-FVW as following: SDV , from the nadir of the a-wave during atrial contraction to the nadir between S-wave and D-wave; DDV , from the nadir between S-wave and D-wave to the nadir of a-wave. Regarding the cardiac cycles, the following variables were measured in ventricular inflow through tricuspid valve (TV) and mitral valve (MV): STV and SMV , from the second peak of ventricular inflow caused by atrial contraction (A-wave) to the opening of the atrio-ventricular valve; DTV and DMV , from the opening of the atrio-ventricular valve to the peak of A-wave. All variables were statistically analyzed using z-score.RESULTS: The data were obtained from 249 normal fetuses and 26 IUGR fetuses. Compared to normal fetuses, SDV showed a significant decrease (P < 0.001), while DDV increased significantly (P < 0.001) in the IUGR group. Regarding the cardiac cycles, STV and SMV decreased significantly (P = 0.014 and P < 0.001, respectively), and DTV and DMV showed significant increases (P = 0.008 and P = 0.002, respectively) in IUGR fetuses.CONCLUSION: Time interval alterations of DV-FVW in growth restricted fetuses reflect the hemodynamic events caused by placental insufficiency.",
author = "N Wada and D Tachibana and Y Kurihara and K Nakagawa and A Nakano and H Terada and K Tanaka and M Fukui and M Koyama and K Hecher",
note = "This article is protected by copyright. All rights reserved.",
year = "2015",
month = aug,
doi = "10.1002/uog.14717",
language = "English",
volume = "46",
pages = "221--226",
journal = "ULTRASOUND OBST GYN",
issn = "0960-7692",
publisher = "John Wiley and Sons Ltd",
number = "2",

}

RIS

TY - JOUR

T1 - Alterations of time-intervals of the ductus venosus and atrioventricular flow velocity waveforms in growth restricted fetuses

AU - Wada, N

AU - Tachibana, D

AU - Kurihara, Y

AU - Nakagawa, K

AU - Nakano, A

AU - Terada, H

AU - Tanaka, K

AU - Fukui, M

AU - Koyama, M

AU - Hecher, K

N1 - This article is protected by copyright. All rights reserved.

PY - 2015/8

Y1 - 2015/8

N2 - OBJECTIVE: To investigate time intervals of the ductus venosus (DV) flow velocity waveform (FVW) and those of cardiac cycle which correspond with each DV-FVW component in fetuses complicated with intrauterine growth restriction (IUGR) due to placental insufficiency.METHODS: Time intervals for systolic (S) and diastolic (D) components were measured in DV-FVW as following: SDV , from the nadir of the a-wave during atrial contraction to the nadir between S-wave and D-wave; DDV , from the nadir between S-wave and D-wave to the nadir of a-wave. Regarding the cardiac cycles, the following variables were measured in ventricular inflow through tricuspid valve (TV) and mitral valve (MV): STV and SMV , from the second peak of ventricular inflow caused by atrial contraction (A-wave) to the opening of the atrio-ventricular valve; DTV and DMV , from the opening of the atrio-ventricular valve to the peak of A-wave. All variables were statistically analyzed using z-score.RESULTS: The data were obtained from 249 normal fetuses and 26 IUGR fetuses. Compared to normal fetuses, SDV showed a significant decrease (P < 0.001), while DDV increased significantly (P < 0.001) in the IUGR group. Regarding the cardiac cycles, STV and SMV decreased significantly (P = 0.014 and P < 0.001, respectively), and DTV and DMV showed significant increases (P = 0.008 and P = 0.002, respectively) in IUGR fetuses.CONCLUSION: Time interval alterations of DV-FVW in growth restricted fetuses reflect the hemodynamic events caused by placental insufficiency.

AB - OBJECTIVE: To investigate time intervals of the ductus venosus (DV) flow velocity waveform (FVW) and those of cardiac cycle which correspond with each DV-FVW component in fetuses complicated with intrauterine growth restriction (IUGR) due to placental insufficiency.METHODS: Time intervals for systolic (S) and diastolic (D) components were measured in DV-FVW as following: SDV , from the nadir of the a-wave during atrial contraction to the nadir between S-wave and D-wave; DDV , from the nadir between S-wave and D-wave to the nadir of a-wave. Regarding the cardiac cycles, the following variables were measured in ventricular inflow through tricuspid valve (TV) and mitral valve (MV): STV and SMV , from the second peak of ventricular inflow caused by atrial contraction (A-wave) to the opening of the atrio-ventricular valve; DTV and DMV , from the opening of the atrio-ventricular valve to the peak of A-wave. All variables were statistically analyzed using z-score.RESULTS: The data were obtained from 249 normal fetuses and 26 IUGR fetuses. Compared to normal fetuses, SDV showed a significant decrease (P < 0.001), while DDV increased significantly (P < 0.001) in the IUGR group. Regarding the cardiac cycles, STV and SMV decreased significantly (P = 0.014 and P < 0.001, respectively), and DTV and DMV showed significant increases (P = 0.008 and P = 0.002, respectively) in IUGR fetuses.CONCLUSION: Time interval alterations of DV-FVW in growth restricted fetuses reflect the hemodynamic events caused by placental insufficiency.

U2 - 10.1002/uog.14717

DO - 10.1002/uog.14717

M3 - SCORING: Journal article

C2 - 25366537

VL - 46

SP - 221

EP - 226

JO - ULTRASOUND OBST GYN

JF - ULTRASOUND OBST GYN

SN - 0960-7692

IS - 2

ER -