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The Journal of Thoracic and Cardiovascular Surgery, Vol 69, 767-775, Copyright © 1975 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Surgery of congenital heart disease assessed by radionuclide scintigraphy

GF Gates, HW Orme and EK Dore

Intravenous injection of 99mTc-labeled macroaggregated albumin (MAA) followed by lung and whole-body scintigraphy results in data from which magnitude of right-to-left shunting and distribution of pulmonary arterial blood flow can be calculated. This information is useful in assessing the functional capacity of a surgical systemic-pulmonic anastomosis. Malfunctioning anastomoses do not significantly reduce right-to-left shunting and may cause unilateral pulmonary hyperperfusion. However, preferential nuclide accumulation may occur in either lung, regardless of shunt function. Consequently, the degree of right-to-left shunting must be determined to fully assess a surgical anastomosis. This technique also allows for assessment of the reduction of right-to-left shunting after intracardiac repairs of congenital cardiac abnormalities.




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Copyright © 1975 by The American Association for Thoracic Surgery.