Effects of milrinone on blood flow of the Y-graft composed with the radial and the internal thoracic artery in patients with coronary artery disease

Sungwon Na, Young Jun Oh, Yon Hee Shim, Yong Woo Hong, Seo Ouk Bang, Young Lan Kwak

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Objective: Milrinone has been known to dilate the internal thoracic artery (ITA) and the radial artery (RA). The effect of milrinone, however, on each graft is unclear when the left ITA (LITA) and the RA form a Y-graft. This study evaluated the changes in blood flow of a composite Y-graft in response to milrinone. Methods: Thirty-two patients undergoing an isolated coronary artery bypass graft surgery were included in this study. A Y-graft was created with an in situ LITA and free RA graft attached to the proximal side of the LITA. Graft flow was measured by opening the graft end for 30 s, and is expressed in 'ml/min'. Graft flow and hemodynamic data were recorded before and 10 min after intravenous milrinone (50 μg/kg) administration. Results: Milrinone significantly increased the RA graft flow, measured while the LITA graft end was clamped, and total Y-graft flow. Respective graft flows were not increased by milrinone when both clamps were released simultaneously, in spite of a significant decrease in the resistance of both grafts. The ratio of flows through the RA and the LITA grafts was not changed by milrinone. Conclusion: Milrinone significantly reduced RA and LITA resistances and increased the total Y-graft flow. Milrinone might dilate each individual arterial graft to a different degree. Milrinone did not, however, change the flow ratio through the RA to LITA grafts when they were measured simultaneously. Therefore, it would not significantly divert graft flow to one side in a composite Y-graft.

Original languageEnglish
Pages (from-to)324-328
Number of pages5
JournalEuropean Journal of Cardio-thoracic Surgery
Volume30
Issue number2
DOIs
Publication statusPublished - 2006 Aug 1

Fingerprint

Milrinone
Mammary Arteries
Coronary Artery Disease
Transplants
Radial Artery

All Science Journal Classification (ASJC) codes

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine

Cite this

@article{98ee168f001e47edbc31e04d6b916c2e,
title = "Effects of milrinone on blood flow of the Y-graft composed with the radial and the internal thoracic artery in patients with coronary artery disease",
abstract = "Objective: Milrinone has been known to dilate the internal thoracic artery (ITA) and the radial artery (RA). The effect of milrinone, however, on each graft is unclear when the left ITA (LITA) and the RA form a Y-graft. This study evaluated the changes in blood flow of a composite Y-graft in response to milrinone. Methods: Thirty-two patients undergoing an isolated coronary artery bypass graft surgery were included in this study. A Y-graft was created with an in situ LITA and free RA graft attached to the proximal side of the LITA. Graft flow was measured by opening the graft end for 30 s, and is expressed in 'ml/min'. Graft flow and hemodynamic data were recorded before and 10 min after intravenous milrinone (50 μg/kg) administration. Results: Milrinone significantly increased the RA graft flow, measured while the LITA graft end was clamped, and total Y-graft flow. Respective graft flows were not increased by milrinone when both clamps were released simultaneously, in spite of a significant decrease in the resistance of both grafts. The ratio of flows through the RA and the LITA grafts was not changed by milrinone. Conclusion: Milrinone significantly reduced RA and LITA resistances and increased the total Y-graft flow. Milrinone might dilate each individual arterial graft to a different degree. Milrinone did not, however, change the flow ratio through the RA to LITA grafts when they were measured simultaneously. Therefore, it would not significantly divert graft flow to one side in a composite Y-graft.",
author = "Sungwon Na and Oh, {Young Jun} and Shim, {Yon Hee} and Hong, {Yong Woo} and Bang, {Seo Ouk} and Kwak, {Young Lan}",
year = "2006",
month = "8",
day = "1",
doi = "10.1016/j.ejcts.2006.04.027",
language = "English",
volume = "30",
pages = "324--328",
journal = "European Journal of Cardio-thoracic Surgery",
issn = "1010-7940",
publisher = "Elsevier",
number = "2",

}

Effects of milrinone on blood flow of the Y-graft composed with the radial and the internal thoracic artery in patients with coronary artery disease. / Na, Sungwon; Oh, Young Jun; Shim, Yon Hee; Hong, Yong Woo; Bang, Seo Ouk; Kwak, Young Lan.

In: European Journal of Cardio-thoracic Surgery, Vol. 30, No. 2, 01.08.2006, p. 324-328.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of milrinone on blood flow of the Y-graft composed with the radial and the internal thoracic artery in patients with coronary artery disease

AU - Na, Sungwon

AU - Oh, Young Jun

AU - Shim, Yon Hee

AU - Hong, Yong Woo

AU - Bang, Seo Ouk

AU - Kwak, Young Lan

PY - 2006/8/1

Y1 - 2006/8/1

N2 - Objective: Milrinone has been known to dilate the internal thoracic artery (ITA) and the radial artery (RA). The effect of milrinone, however, on each graft is unclear when the left ITA (LITA) and the RA form a Y-graft. This study evaluated the changes in blood flow of a composite Y-graft in response to milrinone. Methods: Thirty-two patients undergoing an isolated coronary artery bypass graft surgery were included in this study. A Y-graft was created with an in situ LITA and free RA graft attached to the proximal side of the LITA. Graft flow was measured by opening the graft end for 30 s, and is expressed in 'ml/min'. Graft flow and hemodynamic data were recorded before and 10 min after intravenous milrinone (50 μg/kg) administration. Results: Milrinone significantly increased the RA graft flow, measured while the LITA graft end was clamped, and total Y-graft flow. Respective graft flows were not increased by milrinone when both clamps were released simultaneously, in spite of a significant decrease in the resistance of both grafts. The ratio of flows through the RA and the LITA grafts was not changed by milrinone. Conclusion: Milrinone significantly reduced RA and LITA resistances and increased the total Y-graft flow. Milrinone might dilate each individual arterial graft to a different degree. Milrinone did not, however, change the flow ratio through the RA to LITA grafts when they were measured simultaneously. Therefore, it would not significantly divert graft flow to one side in a composite Y-graft.

AB - Objective: Milrinone has been known to dilate the internal thoracic artery (ITA) and the radial artery (RA). The effect of milrinone, however, on each graft is unclear when the left ITA (LITA) and the RA form a Y-graft. This study evaluated the changes in blood flow of a composite Y-graft in response to milrinone. Methods: Thirty-two patients undergoing an isolated coronary artery bypass graft surgery were included in this study. A Y-graft was created with an in situ LITA and free RA graft attached to the proximal side of the LITA. Graft flow was measured by opening the graft end for 30 s, and is expressed in 'ml/min'. Graft flow and hemodynamic data were recorded before and 10 min after intravenous milrinone (50 μg/kg) administration. Results: Milrinone significantly increased the RA graft flow, measured while the LITA graft end was clamped, and total Y-graft flow. Respective graft flows were not increased by milrinone when both clamps were released simultaneously, in spite of a significant decrease in the resistance of both grafts. The ratio of flows through the RA and the LITA grafts was not changed by milrinone. Conclusion: Milrinone significantly reduced RA and LITA resistances and increased the total Y-graft flow. Milrinone might dilate each individual arterial graft to a different degree. Milrinone did not, however, change the flow ratio through the RA to LITA grafts when they were measured simultaneously. Therefore, it would not significantly divert graft flow to one side in a composite Y-graft.

UR - http://www.scopus.com/inward/record.url?scp=33745890580&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745890580&partnerID=8YFLogxK

U2 - 10.1016/j.ejcts.2006.04.027

DO - 10.1016/j.ejcts.2006.04.027

M3 - Article

C2 - 16828302

AN - SCOPUS:33745890580

VL - 30

SP - 324

EP - 328

JO - European Journal of Cardio-thoracic Surgery

JF - European Journal of Cardio-thoracic Surgery

SN - 1010-7940

IS - 2

ER -