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Analysis of transit time flow of the right internal thoracic artery anastomosed to the left anterior descending artery compared to the left internal thoracic artery.

Milani R, Moraes Dd, Sanches A, Jardim R, Lumikoski T, Miotto G, Santana VH, Brofman PR - Rev Bras Cir Cardiovasc (2014 Apr-Jun)

Bottom Line: There were no deaths in this series.Right internal mammary artery presented a similar behavior to left internal mammary artery when anastomosed to the anterior interventricular branch of the left coronary artery.There was no statistical difference between the measured flow obtained between both arteries.

View Article: PubMed Central - PubMed

ABSTRACT

Introduction: We evaluated with transit time flow the performance of the right and left thoracic arteries when used as a graft for the left anterior descending artery.

Methods: Fifty patients undergoing surgery for myocardial revascularization without cardiopulmonary bypass were divided into two groups. In group A patients received graft of right internal mammary artery to the anterior interventricular branch. In group B patients received graft of left internal mammary artery to the same branch. At the end of the operation the flow was assessed by measuring transit time.

Results: In group A, mean age was 60.6 ± 9.49 years. The average height and weight of the group was 80.4 ± 10.32 kg and 169.2 ± 6.86 cm. The average number of grafts per patient in this group was 3.28 ± 1.49. The mean flow and distal resistance obtained in right internal thoracic artery was 42.1 ± 23.4 ml/min and 2.8 ± 0.9 respectively. In group B, the mean age was 59.8 ± 9.7 years. The average height and weight of this group was 77.7 ± 14.22 kg and 166.0 ± 8.2 cm. The average number of grafts per patient in this group was 3.08 ± 0.82. The mean flow and distal resistance observed in this group was 34.2 ± 19.1 ml/min and 2.0 ± 0.7. There were no deaths in this series.

Conclusion: Right internal mammary artery presented a similar behavior to left internal mammary artery when anastomosed to the anterior interventricular branch of the left coronary artery. There was no statistical difference between the measured flow obtained between both arteries.

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Flow analysis of internal thoracic artery
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f02: Flow analysis of internal thoracic artery

Mentions: At the end of the anastomoses after heparin reversal. systolic blood pressure wasmaintained around 110 mmHg and a heart rate average ranging between 80 and 100 beats perminute. No patient in the series needed use of vasoactive drugs to obtain the desiredpressure. Moreover. with "3mm probe" (Figure 1)connected to the flowmeter Medistim brand. model Butterfly Flowmeter. flow measures bytransit time and review of the pulsatility index. PI (Figure 2) were performed. To obtain these values. the patients were keptunder apnea for a period of around 10 seconds. and the "probe" applied to the selectedgraft. According to the device manufacturer. flows higher than 10 ml/min. and apulsatility index which measures the distal strength below 5 means an anastomosis ofgood quality.


Analysis of transit time flow of the right internal thoracic artery anastomosed to the left anterior descending artery compared to the left internal thoracic artery.

Milani R, Moraes Dd, Sanches A, Jardim R, Lumikoski T, Miotto G, Santana VH, Brofman PR - Rev Bras Cir Cardiovasc (2014 Apr-Jun)

Flow analysis of internal thoracic artery
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4389469&req=5

f02: Flow analysis of internal thoracic artery
Mentions: At the end of the anastomoses after heparin reversal. systolic blood pressure wasmaintained around 110 mmHg and a heart rate average ranging between 80 and 100 beats perminute. No patient in the series needed use of vasoactive drugs to obtain the desiredpressure. Moreover. with "3mm probe" (Figure 1)connected to the flowmeter Medistim brand. model Butterfly Flowmeter. flow measures bytransit time and review of the pulsatility index. PI (Figure 2) were performed. To obtain these values. the patients were keptunder apnea for a period of around 10 seconds. and the "probe" applied to the selectedgraft. According to the device manufacturer. flows higher than 10 ml/min. and apulsatility index which measures the distal strength below 5 means an anastomosis ofgood quality.

Bottom Line: There were no deaths in this series.Right internal mammary artery presented a similar behavior to left internal mammary artery when anastomosed to the anterior interventricular branch of the left coronary artery.There was no statistical difference between the measured flow obtained between both arteries.

View Article: PubMed Central - PubMed

ABSTRACT

Introduction: We evaluated with transit time flow the performance of the right and left thoracic arteries when used as a graft for the left anterior descending artery.

Methods: Fifty patients undergoing surgery for myocardial revascularization without cardiopulmonary bypass were divided into two groups. In group A patients received graft of right internal mammary artery to the anterior interventricular branch. In group B patients received graft of left internal mammary artery to the same branch. At the end of the operation the flow was assessed by measuring transit time.

Results: In group A, mean age was 60.6 ± 9.49 years. The average height and weight of the group was 80.4 ± 10.32 kg and 169.2 ± 6.86 cm. The average number of grafts per patient in this group was 3.28 ± 1.49. The mean flow and distal resistance obtained in right internal thoracic artery was 42.1 ± 23.4 ml/min and 2.8 ± 0.9 respectively. In group B, the mean age was 59.8 ± 9.7 years. The average height and weight of this group was 77.7 ± 14.22 kg and 166.0 ± 8.2 cm. The average number of grafts per patient in this group was 3.08 ± 0.82. The mean flow and distal resistance observed in this group was 34.2 ± 19.1 ml/min and 2.0 ± 0.7. There were no deaths in this series.

Conclusion: Right internal mammary artery presented a similar behavior to left internal mammary artery when anastomosed to the anterior interventricular branch of the left coronary artery. There was no statistical difference between the measured flow obtained between both arteries.

Show MeSH
Related in: MedlinePlus