EXPLORATION OF
METHODS FOR EVALUATING THE DEVELOPMENT OF PULMONARY ARTERIES IN TETRALOGY
OF FALLOT
Xiao Tingting, Chen SB, Zhang YQ
Shanghai Children’s Medical Center,
Shanghai, China
Objective:
To explore a new method for evaluating the Development of pulmonary
arteries, as a criterion for TOF operation.
Methods: Pulmonary arteries were quantified by PAI ( the
cross-sectional areas of left and right pulmonary arteries divided by body surface area) at
proximal、middle、distal portions on DSA films with compute assisted measurement
system in 118 patients with TOF.
The correlative analysis was done between PAIs and postoperative
outcome.
Result: The minimum diameter was found at proximal RPA
in 62, middle in 22, distal in 34; at proximal LPA in 46, middle in 13,
distal in 59. Compared with Nakata index, the length of day in ICU,
mechanical ventilation time, dose of inotropic drugs correlated well with
modified PAI (the minimum cross sectional areas of RPA & LPA divided by
body surface area) more than Nakata index. When modified PAI≤120mm2/m2,
postoperative
hemodynamics was made unstable, the frequency
of low cardiac output syndrome
and mortality were increased.
Conclusion: Modified PAI was very useful in decision-making strategy
of TOF and predicting postoperative outcome.