Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction

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Standard

Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction. / Pedersen, Lia Mendes; Pedersen, Thais Almeida Lins; Pedersen, Erik Morre; Højmyr, Hilde; Emmertsen, Kristian; Hjortdal, Vibeke Elisabeth.

I: European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Bind 37, Nr. 3, 03.2010, s. 658-61.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Pedersen, LM, Pedersen, TAL, Pedersen, EM, Højmyr, H, Emmertsen, K & Hjortdal, VE 2010, 'Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction', European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, bind 37, nr. 3, s. 658-61. https://doi.org/10.1016/j.ejcts.2009.07.041

APA

Pedersen, L. M., Pedersen, T. A. L., Pedersen, E. M., Højmyr, H., Emmertsen, K., & Hjortdal, V. E. (2010). Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction. European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, 37(3), 658-61. https://doi.org/10.1016/j.ejcts.2009.07.041

Vancouver

Pedersen LM, Pedersen TAL, Pedersen EM, Højmyr H, Emmertsen K, Hjortdal VE. Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction. European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery. 2010 mar.;37(3):658-61. https://doi.org/10.1016/j.ejcts.2009.07.041

Author

Pedersen, Lia Mendes ; Pedersen, Thais Almeida Lins ; Pedersen, Erik Morre ; Højmyr, Hilde ; Emmertsen, Kristian ; Hjortdal, Vibeke Elisabeth. / Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction. I: European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery. 2010 ; Bind 37, Nr. 3. s. 658-61.

Bibtex

@article{bd9668f1f50641c7819f17f0136800d9,
title = "Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction",
abstract = "INTRODUCTION: Blood flow distribution after ascending-to-descending aortic bypass in complex aortic arch obstruction is poorly described.OBJECTIVE: To study blood flow by magnetic resonance (MR) imaging at rest and during exercise in patients with aortic arch obstruction and a bypass tube and in healthy controls.MATERIAL AND METHODS: Seven patients (median 18 years (range: 14-54 years) and weight 79 kg (range 51-91 kg)) were studied 25 months (range 6-68 months) following surgical insertion of 14- or 16-mm bypass tube from the ascending to the distal descending thoracic aorta. Seven sex- and aged-matched normotensive subjects served as controls. MR real-time flow was measured in the ascending aorta and the proximal descending thoracic aorta in all participants and in the bypass tube in patients at rest and during supine leg exercise at 0.5 and 1.0 W kg(-1).RESULTS: Ascending aortic flow at rest in patients was 2.9l min(-1)m(-2) (range 2.3-4.4) and increased with exercise to 5.3 (range 4.3-7.3) at 1.0 W kg(-1), which was not different from controls (3.4 (range 2.4-4.6) and 6.1 (range 5.0-6.9)). The bypass tube carried roughly the same flow as the proximal descending aorta at rest (1.5 (range 0.7-2.0) and 1.0 (range 0.2-2.0), respectively, and flows increased similarly during exercise (2.8 (range 1.5-4.0) and 2.0 (range 0.8-4.1), respectively at 1.0 W kg(-1)). Flow to the upper body did not differ between groups nor changed with supine leg exercise.CONCLUSION: With aortic arch obstruction, an ascending-to-descending aortic bypass tube provides normal flow to the lower body at rest and during supine leg exercise without evidence of steal from the upper body.",
keywords = "Adolescent, Adult, Aorta/physiopathology, Aorta, Thoracic/abnormalities, Aortic Coarctation/surgery, Blood Vessel Prosthesis Implantation/methods, Case-Control Studies, Exercise/physiology, Female, Humans, Magnetic Resonance Angiography/methods, Male, Middle Aged, Postoperative Period, Regional Blood Flow/physiology, Rest/physiology, Young Adult",
author = "Pedersen, {Lia Mendes} and Pedersen, {Thais Almeida Lins} and Pedersen, {Erik Morre} and Hilde H{\o}jmyr and Kristian Emmertsen and Hjortdal, {Vibeke Elisabeth}",
note = "Copyright (c) 2009 European Association for Cardio-Thoracic Surgery. Published by Elsevier B.V. All rights reserved.",
year = "2010",
month = mar,
doi = "10.1016/j.ejcts.2009.07.041",
language = "English",
volume = "37",
pages = "658--61",
journal = "European Journal of Cardio-thoracic Surgery",
issn = "1010-7940",
publisher = "Oxford University Press",
number = "3",

}

RIS

TY - JOUR

T1 - Blood flow measured by magnetic resonance imaging at rest and exercise after surgical bypass of aortic arch obstruction

AU - Pedersen, Lia Mendes

AU - Pedersen, Thais Almeida Lins

AU - Pedersen, Erik Morre

AU - Højmyr, Hilde

AU - Emmertsen, Kristian

AU - Hjortdal, Vibeke Elisabeth

N1 - Copyright (c) 2009 European Association for Cardio-Thoracic Surgery. Published by Elsevier B.V. All rights reserved.

PY - 2010/3

Y1 - 2010/3

N2 - INTRODUCTION: Blood flow distribution after ascending-to-descending aortic bypass in complex aortic arch obstruction is poorly described.OBJECTIVE: To study blood flow by magnetic resonance (MR) imaging at rest and during exercise in patients with aortic arch obstruction and a bypass tube and in healthy controls.MATERIAL AND METHODS: Seven patients (median 18 years (range: 14-54 years) and weight 79 kg (range 51-91 kg)) were studied 25 months (range 6-68 months) following surgical insertion of 14- or 16-mm bypass tube from the ascending to the distal descending thoracic aorta. Seven sex- and aged-matched normotensive subjects served as controls. MR real-time flow was measured in the ascending aorta and the proximal descending thoracic aorta in all participants and in the bypass tube in patients at rest and during supine leg exercise at 0.5 and 1.0 W kg(-1).RESULTS: Ascending aortic flow at rest in patients was 2.9l min(-1)m(-2) (range 2.3-4.4) and increased with exercise to 5.3 (range 4.3-7.3) at 1.0 W kg(-1), which was not different from controls (3.4 (range 2.4-4.6) and 6.1 (range 5.0-6.9)). The bypass tube carried roughly the same flow as the proximal descending aorta at rest (1.5 (range 0.7-2.0) and 1.0 (range 0.2-2.0), respectively, and flows increased similarly during exercise (2.8 (range 1.5-4.0) and 2.0 (range 0.8-4.1), respectively at 1.0 W kg(-1)). Flow to the upper body did not differ between groups nor changed with supine leg exercise.CONCLUSION: With aortic arch obstruction, an ascending-to-descending aortic bypass tube provides normal flow to the lower body at rest and during supine leg exercise without evidence of steal from the upper body.

AB - INTRODUCTION: Blood flow distribution after ascending-to-descending aortic bypass in complex aortic arch obstruction is poorly described.OBJECTIVE: To study blood flow by magnetic resonance (MR) imaging at rest and during exercise in patients with aortic arch obstruction and a bypass tube and in healthy controls.MATERIAL AND METHODS: Seven patients (median 18 years (range: 14-54 years) and weight 79 kg (range 51-91 kg)) were studied 25 months (range 6-68 months) following surgical insertion of 14- or 16-mm bypass tube from the ascending to the distal descending thoracic aorta. Seven sex- and aged-matched normotensive subjects served as controls. MR real-time flow was measured in the ascending aorta and the proximal descending thoracic aorta in all participants and in the bypass tube in patients at rest and during supine leg exercise at 0.5 and 1.0 W kg(-1).RESULTS: Ascending aortic flow at rest in patients was 2.9l min(-1)m(-2) (range 2.3-4.4) and increased with exercise to 5.3 (range 4.3-7.3) at 1.0 W kg(-1), which was not different from controls (3.4 (range 2.4-4.6) and 6.1 (range 5.0-6.9)). The bypass tube carried roughly the same flow as the proximal descending aorta at rest (1.5 (range 0.7-2.0) and 1.0 (range 0.2-2.0), respectively, and flows increased similarly during exercise (2.8 (range 1.5-4.0) and 2.0 (range 0.8-4.1), respectively at 1.0 W kg(-1)). Flow to the upper body did not differ between groups nor changed with supine leg exercise.CONCLUSION: With aortic arch obstruction, an ascending-to-descending aortic bypass tube provides normal flow to the lower body at rest and during supine leg exercise without evidence of steal from the upper body.

KW - Adolescent

KW - Adult

KW - Aorta/physiopathology

KW - Aorta, Thoracic/abnormalities

KW - Aortic Coarctation/surgery

KW - Blood Vessel Prosthesis Implantation/methods

KW - Case-Control Studies

KW - Exercise/physiology

KW - Female

KW - Humans

KW - Magnetic Resonance Angiography/methods

KW - Male

KW - Middle Aged

KW - Postoperative Period

KW - Regional Blood Flow/physiology

KW - Rest/physiology

KW - Young Adult

U2 - 10.1016/j.ejcts.2009.07.041

DO - 10.1016/j.ejcts.2009.07.041

M3 - Journal article

C2 - 19762252

VL - 37

SP - 658

EP - 661

JO - European Journal of Cardio-thoracic Surgery

JF - European Journal of Cardio-thoracic Surgery

SN - 1010-7940

IS - 3

ER -

ID: 242714312